| Name | Nation | Sport | Games | Notes |
|---|
| Ko Bu-beng | Chinese Taipei | Weightlifting | 1956 Summer, 1960 Summer | |
| Ko Dong-sik | South Korea | Field hockey | 2004 Summer, 2008 Summer | |
| Ko Eun-jung | Biathlon | 2018 Winter | |
| Ko Gi-hyun | Short track speed skating | 2002 Winter | |
| Ko Hye-in | Korea Team | Ice hockey | 2018 Winter | |
| Ko Hyong | North Korea | Judo | 1980 Summer | |
| Ko Hyon-suk | Speed skating | 2010 Winter | |
| Ko Jin-young | South Korea | Golf | 2020 Summer, 2024 Summer | |
| Ko Jong-soo | Football | 2000 Summer | |
| Ko Jung-sun | Fencing | 1996 Summer, 2000 Summer | |
| Ko Kwang-min | Field hockey | 2004 Summer | |
| Ko Kyung-doo | Judo | 2000 Summer | |
| Ko Kyung-soo | Handball | 2008 Summer, 2012 Summer | |
| Ko Lai Chak | Hong Kong | Table tennis | 2004 Summer, 2008 Summer | |
| Lydia Ko | New Zealand | Golf | 2016 Summer, 2020 Summer, 2024 Summer | |
| Ko Nak-choon | South Korea | Fencing | 1988 Summer | |
| Ko Ok-ran | North Korea | Figure skating | 1992 Winter | |
| Ko Saing-keun | South Korea | Boxing | 1972 Summer | |
| Ko Sung-hyun | Badminton | 2012 Summer, 2016 Summer | |
| Ko Tai Chuen | Singapore | Basketball | 1956 Summer | |
| Ko Yin Fai | Hong Kong | Fencing | 1984 Summer | |
| Ko Yo-da | South Korea | Boxing | 1992 Summer | |
| Ko Young-eun | Rowing | 2008 Summer | |
| Ko Young-hee | Shooting | 1984 Summer | |
| Ko Young-ho | Wrestling | 1992 Summer | |
| Ko Young-min | Baseball | 2008 Summer | |
| Ko Young-pyo | 2020 Summer | |
| Ko Young-sam | Boxing | 1996 Summer | |
| Nteboheleng Koaeana | Lesotho | Athletics | 1996 Summer | |
| Marthe Koala | Burkina Faso | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Solfrid Koanda | Norway | Weightlifting | 2024 Summer | |
| Eddy Koaz | Israel | Judo | 1984 Summer | |
| Tetyana Kob | Ukraine | Boxing | 2016 Summer | |
| Ryohei Koba | Japan | Shooting | 1984 Summer, 1988 Summer, 1992 Summer | |
| Ana Kobal | Slovenia | Alpine skiing | 2006 Winter | |
| Rita Kőbán | Hungary | Canoe sprint | 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer | |
| İlknur Kobaş | Turkey | Judo | 1996 Summer | |
| Kenji Kobase | Japan | Swimming | 2016 Summer | |
| Mako Kobata | Volleyball | 2020 Summer | |
| Martin Kobau | Austria | Rowing | 1996 Summer, 2000 Summer | |
| Shiho Kobayakawa | Japan | Field hockey | 2024 Summer | |
| Asaji Kobayashi | Art competitions | 1936 Summer | |
| Chika Kobayashi [ Wikidata ] | Cross country skiing | 2022 Winter | |
| Chisa Kobayashi | Artistic swimming | 2012 Summer | |
| Dawn Kobayashi | Jamaica | Shooting | 2004 Summer | |
| Hideo Kobayashi | Japan | Canoe sprint | 1964 Summer | |
| Hiroko Kobayashi | Canoe slalom | 1992 Summer, 1996 Summer | |
| Hiromi Kobayashi | Artistic swimming | 2008 Summer | |
| Junshirō Kobayashi | Ski jumping | 2018 Winter, 2022 Winter | |
| Kazuo Kobayashi | Diving | 1932 Summer | |
| Kyoko Kobayashi | Softball | 1996 Summer | |
| Maki Kobayashi | Rowing | 1988 Summer | |
| Masahide Kobayashi | Baseball | 2004 Summer | |
| Masaichi Kobayashi | Art competitions | 1932 Summer | |
| Masatoshi Kobayashi | Luge | 1972 Winter | |
| Miki Kobayashi | Biathlon | 2014 Winter | |
| Miwako Kobayashi | Swimming | 1968 Summer | |
| Miyuki Kobayashi | Canoe sprint | 1988 Summer, 1992 Summer | |
| Norihito Kobayashi | Nordic combined | 2002 Winter, 2006 Winter, 2010 Winter | |
| Ritsudo Kobayashi | Art competitions | 1936 Summer | |
| Royal Kobayashi | Boxing | 1972 Summer | |
| Ryōyū Kobayashi | Ski jumping | 2018 Winter, 2022 Winter | |
| Ryuichi Kobayashi | Bobsleigh | 2006 Winter, 2010 Winter | |
| Sadayoshi Kobayashi | Field hockey | 1932 Summer | |
| Seiya Kobayashi | Luge | 2022 Winter | |
| Shuji Kobayashi | Speed skating | 1960 Winter | |
| Susumu Kobayashi | Shooting | 2008 Summer | |
| Tadao Kobayashi | Football | 1956 Summer | |
| Takako Kobayashi | Judo | 1992 Summer | |
| Takashi Kobayashi | Wrestling | 1988 Summer | |
| Takeshi Kobayashi | 1976 Summer | |
| Uta Kobayashi [ Wikidata ] | Artistic swimming | 2024 Summer | |
| Yayoi Kobayashi | Football | 2004 Summer | |
| Yoshimi Kobayashi | Softball | 2000 Summer | |
| Yugo Kobayashi | Badminton | 2024 Summer | |
| Yuka Kobayashi | Track cycling | 2020 Summer | |
| Yumie Kobayashi | Luge | 1998 Winter, 2002 Winter | |
| Yuriko Kobayashi | Athletics | 2008 Summer | |
| Primož Kobe | Slovenia | 2012 Summer | |
| Gérard Kobéané | Burkina Faso | 2012 Summer | |
| Stefan Kobel | Switzerland | Beach volleyball | 2004 Summer | |
| Aleksey Kobelev | Russia | Biathlon | 1998 Winter | |
| Valery Kobelev | Nordic combined, Ski jumping | 1994 Winter, 1998 Winter, 2002 Winter | |
| Max Kobelt | Switzerland | Wrestling | 1964 Summer | |
| Rudolf Kobelt | 1964 Summer | |
| Janko Kobentar | Yugoslavia | Cross country skiing | 1964 Winter | |
| Amelie Kober | Germany | Snowboarding | 2006 Winter, 2010 Winter, 2014 Winter | |
| Annegret Kober | West Germany | Swimming | 1972 Summer | |
| Lars Kober | Germany | Canoe sprint | 2000 Summer | |
| Margot Kober | Austria | Cross country skiing | 1988 Winter | |
| Noémie Kober | France | Rowing | 2016 Summer | |
| Sebastian Köber | Germany | Boxing | 2000 Summer, 2004 Summer | |
| Walter Köberle | West Germany | Ice hockey | 1976 Winter | |
| Chris Koberstein | Canada | Road cycling | 1988 Summer, 1992 Summer | |
| Tomáš Kobes | Czech Republic | Canoe slalom | 2000 Summer | |
| Vjekoslav Kobešćak | Croatia | Water polo | 1996 Summer, 2000 Summer, 2004 Summer | |
| Andrea Kobetić | Handball | 2012 Summer | |
| Liselotte Kobi | Switzerland | Swimming | 1948 Summer, 1952 Summer | |
| Jan Kobián | Czech Republic | Bobsleigh | 1994 Winter, 1998 Winter, 2002 Winter, 2006 Winter, 2010 Winter | |
| Genowefa Kobielska | Poland | Athletics | 1928 Summer | |
| Magdalena Kobielusz [ Wikidata ] | Cross country skiing | 2022 Winter | |
| Kobierski [ Wikidata ] | France | Swimming | 1900 Summer | |
| Marcin Kobierski | Poland | Canoe sprint | 1996 Summer | |
| Nataliya Kobina | Uzbekistan | Athletics | 2000 Summer | |
| Andreja Koblar | Slovenia | Biathlon | 1994 Winter, 1998 Winter, 2002 Winter | |
| Jernej Koblar | Alpine skiing | 1994 Winter, 1998 Winter, 2002 Winter | |
| Marcela Koblasová | Czechoslovakia | Athletics | 1980 Summer | |
| Kalle Koblet | Switzerland | Snowboarding | 2018 Winter, 2022 Winter | |
| Robert Kobliashvili | Georgia | Wrestling | 2016 Summer, 2024 Summer | |
| Dmitriy Koblov | Kazakhstan | Athletics | 2016 Summer | |
| Valeria Koblova | Russia, Russian Olympic Committee | Wrestling | 2012 Summer, 2016 Summer, 2020 Summer | |
| Mary Koboldt | United States | Field hockey | 1988 Summer | |
| Tsukasa Kobonoki | Japan | Biathlon | 2022 Winter | |
| Daniar Kobonov | Kyrgyzstan | Wrestling | 2004 Summer, 2012 Summer | |
| Takayuki Kobori | Japan | Ice hockey | 1998 Winter | |
| Waka Kobori | Swimming | 2020 Summer, 2024 Summer | |
| Yuki Kobori | 2012 Summer, 2016 Summer | |
| Vladimír Kobranov | Czechoslovakia | Ice hockey | 1948 Winter | |
| Kristel Köbrich | Chile | Swimming, Marathon swimming | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Karsten Kobs | Germany | Athletics | 1996 Summer, 2000 Summer, 2004 Summer | |
| Elias Kobti | Syria | Judo | 1980 Summer | |
| Masanobu Kobuchi [ Wikidata ] | Japan | Art competitions | 1936 Summer | |
| Károly Kobulszky | Hungary | Athletics | 1912 Summer | |
| Agnieszka Kobus | Poland | Rowing | 2016 Summer, 2020 Summer | |
| Klaus Kobusch | Germany, West Germany | Track cycling | 1964 Summer, 1968 Summer | |
| Anita Kobuß | East Germany | Canoe sprint | 1968 Summer | |
| Andrzej Kobylański | Poland | Football | 1992 Summer | |
| Maria Kobylińska | Rowing | 1980 Summer | |
| Andrzej Kobyliński | Equestrian eventing | 1960 Summer | |
| Edward Kobyliński | Rowing | 1932 Summer, 1936 Summer | |
| Sergey Kobyzev | Russia | Short track speed skating | 1994 Winter | |
| Igor Kobzar | Russia, Russian Olympic Committee | Volleyball | 2016 Summer, 2020 Summer | |
| František Kobzík | Czechoslovakia | Rowing | 1936 Summer | |
| Lyubov Kobzova | Soviet Union | Swimming | 1976 Summer | |
| Cengiz Koç | Germany | Boxing | 2000 Summer | |
| Hakan Koç | Turkey | Wrestling | 2008 Summer | |
| Salih Koç | Equestrian eventing, Equestrian jumping | 1948 Summer, 1956 Summer, 1960 Summer | |
| Nihattin Koca [ Wikidata ] | Cross country skiing | 1984 Winter | |
| Saim Koca | 1988 Winter | |
| Ekrem Koçak | Athletics | 1952 Summer, 1960 Summer | |
| Sümer Koçak | Wrestling | 1984 Summer, 1988 Summer | |
| Gülşah Kocatürk | Judo | 2012 Summer | |
| Petr Kocek | Czechoslovakia | Track cycling | 1976 Summer, 1980 Summer | |
| Natalija Kočergina | Lithuania | Biathlon | 2018 Winter | |
| Teodor Kocerka | Poland | Rowing | 1952 Summer, 1956 Summer, 1960 Summer | |
| Katrine Koch Jacobsen | Denmark | Athletics | 2024 Summer | |
| Suvi Koskinen | Finland | 2024 Summer | |
| Adalbert Koch | Switzerland | Field hockey | 1928 Summer | |
| Alexander Koch | Rowing | 1992 Summer | |
| Alexander Koch | Germany | Fencing | 1992 Summer, 1996 Summer | |
| Beat Koch | Switzerland | Cross country skiing | 1998 Winter | |
| Beate Koch | East Germany | Athletics | 1988 Summer | |
| Bill Koch | United States | Cross country skiing | 1976 Winter, 1980 Winter, 1984 Winter, 1992 Winter | |
| Billy Koch | Baseball | 1996 Summer | |
| Carolyn Koch | Shooting | 1988 Summer | |
| Cees Koch | Netherlands | Canoe sprint | 1948 Summer, 1952 Summer | |
| Cees Koch | Athletics | 1960 Summer, 1964 Summer | |
| Claus Koch | West Germany | Shooting | 1976 Summer | |
| Des Koch | United States | Athletics | 1956 Summer | |
| Edeltraud Koch | West Germany | Swimming | 1972 Summer | |
| Erland Koch | Germany | Shooting | 1912 Summer | |
| Erland Koch | Sweden | 1936 Summer, 1948 Summer | |
| Éva Koch | Hungary | Alpine skiing | 1994 Winter | |
| Flury Koch | Switzerland | Cross country skiing | 1968 Winter | |
| Franziska Koch | Germany | Road cycling | 2024 Summer | |
| Fritz Koch | Austria | Nordic combined | 1976 Winter | |
| Hannes Koch | Germany | Athletics | 1960 Summer | |
| Heidi Koch | Austria | Swimming | 1980 Summer | |
| Helga Koch | West Germany | Fencing | 1968 Summer | |
| Henri Koch | Luxembourg | Bobsleigh | 1936 Winter | |
| Henriette Koch | Denmark | Sailing | 2012 Summer | |
| Jonathan Koch | Germany | Rowing | 2008 Summer, 2016 Summer | |
| Jürgen Koch | Austria | Badminton | 1992 Summer | |
| Karl Koch | Germany | Road cycling | 1928 Summer | |
| Karl Christian Koch | Denmark | Swimming | 1972 Summer | |
| Károly Koch | Hungary | Rowing | 1924 Summer | |
| Kurt Koch | Switzerland | Shooting | 1996 Summer | |
| Lise Koch | Denmark | Athletics | 1960 Summer | |
| Lloyd Koch | Zimbabwe | Field hockey | 1964 Summer | |
| Louis Koch | Switzerland | Bobsleigh | 1928 Winter | |
| Lucien Koch | Snowboarding | 2014 Winter | |
| Marc Koch | Germany | Athletics | 2024 Summer | |
| Marco Koch | Swimming | 2012 Summer, 2016 Summer, 2020 Summer | |
| Marita Koch | East Germany | Athletics | 1976 Summer, 1980 Summer | |
| Martin Koch | Germany | Road cycling | 1912 Summer | |
| Martin Koch | Austria | Ski jumping | 2002 Winter, 2006 Winter | |
| Máté Tamás Koch | Hungary | Fencing | 2024 Summer | |
| Michael Koch | Sweden | Handball | 1972 Summer | |
| René Koch | France | Shooting | 1936 Summer | |
| Rudolf Koch | Germany | Art competitions | 1928 Summer | |
| Simona Koch | Diving | 1992 Summer, 1996 Summer | |
| Simone Koch | East Germany | Figure skating | 1988 Winter | |
| Sophie Koch | Germany | Canoe sprint | 2020 Summer | |
| Thomas Koch | Austria | Ice hockey | 2014 Winter | |
| Petar Kochanov | Bulgaria | Swimming | 1980 Summer | |
| Jakub Kochanowski | Poland | Volleyball | 2020 Summer, 2024 Summer | |
| Natalia Kochańska | Shooting | 2024 Summer | |
| Yoram Kochavy | Israel | Swimming | 1984 Summer | |
| Fabienne Kocher | Switzerland | Judo | 2020 Summer | |
| Fritz Kocher | Cross country skiing | 1952 Winter, 1956 Winter, 1960 Winter | |
| Harry Köcher | Germany | Shooting | 1964 Summer | |
| Martina Kocher | Switzerland | Luge | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Zina Kocher | Canada | Biathlon | 2006 Winter, 2010 Winter, 2014 Winter | |
| Ivan Kochergin | Soviet Union | Wrestling | 1960 Summer, 1968 Summer | |
| Tetyana Kocherhina | Handball | 1976 Summer, 1980 Summer | |
| Erich Köchermann | Germany | Athletics | 1928 Summer, 1932 Summer | |
| Gotfrid Köchert | Austria | Sailing | 1960 Summer | |
| Anastasia Kocherzhova | Russian Olympic Committee | Bobsleigh | 2018 Winter | |
| Susana Kochesok | Trampolining | 2020 Summer | |
| Pavel Kochetkov | Russia | Road cycling | 2016 Summer | |
| Sergey Kochetkov | Fencing | 2004 Summer | |
| Dina Kochetkova | Artistic gymnastics | 1996 Summer | |
| Olga Kochetkova | Swimming | 1996 Summer | |
| Lyubov Kochetova | Equestrian jumping | 2008 Summer | |
| Ivan Kochev | Bulgaria | Volleyball | 1964 Summer | |
| Krasimir Kochev | Wrestling | 2000 Summer, 2004 Summer | |
| Mariya Kocheva | Swimming | 1992 Summer | |
| Raquel Kochhann | Brazil | Rugby sevens | 2016 Summer, 2020 Summer, 2024 Summer | |
| Dmitry Kochkin | Soviet Union | Nordic combined | 1960 Winter | |
| Li Kochman | Israel | Judo | 2020 Summer | |
| Gerasim Kochnev | Uzbekistan | Canoe sprint | 2016 Summer | |
| Olga Kochneva | Russia | Fencing | 2016 Summer | |
| Georgi Kochov | Bulgaria | Alpine skiing | 1976 Winter | |
| Hristo Kochov | Cross country skiing | 1936 Winter | |
| Jiří Kochta | Czechoslovakia | Ice hockey | 1968 Winter, 1972 Winter | |
| Maria Kochwa | Kenya | Volleyball | 2000 Summer | |
| František Kocián | Czechoslovakia | Wrestling | 1920 Summer | |
| Madison Kocian | United States | Artistic gymnastics | 2016 Summer | |
| Joanna Kocielnik | Poland | Athletics | 2008 Summer | |
| Tereza Kočiš | Yugoslavia | Artistic gymnastics | 1952 Summer, 1960 Summer | |
| Brigitte Köck | Austria | Snowboarding | 1998 Winter | |
| Gien de Kock | Netherlands | Athletics | 1936 Summer | |
| Putte Kock | Sweden | Football | 1924 Summer | |
| Vera Kock | Swimming | 1968 Summer | |
| Thorleif Kockgård | Shooting | 1952 Summer | |
| Ernest Kockler | United States | Road cycling | 1920 Summer | |
| Vladimír Kocman | Czechoslovakia | Judo | 1980 Summer | |
| Janez Kocmur | Yugoslavia | Swimming | 1960 Summer | |
| Yannick Kocon | Italy | Figure skating | 2010 Winter | |
| Benedykt Kocot | Poland | Track cycling | 1972 Summer, 1976 Summer, 1980 Summer | |
| Estanislao Kocourek | Argentina | Athletics | 1952 Summer | |
| Antal Kocsis | Hungary | Boxing | 1928 Summer | |
| Erzsébet Kocsis | Handball | 1996 Summer | |
| Ferenc Kocsis | Wrestling | 1980 Summer | |
| János Kocsis | 1976 Summer, 1980 Summer | |
| Károly Kocsis | Artistic gymnastics | 1952 Summer | |
| Lajos Kocsis | Football | 1968 Summer, 1972 Summer | |
| Miklós Kocsis | Shooting | 1956 Summer | |
| Sándor Kocsis | Football | 1952 Summer | |
| Zuzana Kocumová | Czech Republic | Cross country skiing | 1998 Winter | |
| Miro Kocuvan | Yugoslavia | Athletics | 1972 Summer | |
| Miro Kocuvan | Slovenia | 1996 Summer | |
| Józef Kocyan | Poland | Ski jumping | 1968 Winter | |
| Edward Kocząb | Ice hockey | 1956 Winter | |
| Mór Kóczán | Hungary, Czechoslovakia | Athletics | 1908 Summer, 1912 Summer, 1924 Summer | |
| Flavius Koczi | Romania | Artistic gymnastics | 2008 Summer, 2012 Summer | |
| Jenő Kóczián | Hungary | Athletics | 1996 Summer | |
| Andrew Koczka | Australia | Football | 1988 Summer | |
| István Koczka | Hungary | Swimming | 1976 Summer | |
| Pál Koczka | Basketball | 1964 Summer | |
| Eugeniusz Koczorski | Poland | Equestrian eventing | 1988 Summer | |
| Nao Kodaira | Japan | Speed skating | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Darina Kodajová | Czechoslovakia | Volleyball | 1972 Summer | |
| Natália Kodajová | Slovakia | Swimming | 1996 Summer | |
| Akira Kodama | Japan | Basketball | 1964 Summer | |
| Chika Kodama | Softball | 1996 Summer | |
| Kazuoki Kodama | Nordic combined | 1988 Winter | |
| Kinue Kodama | Archery | 1996 Summer | |
| Mei Kodama | Athletics | 2020 Summer | |
| Miki Kodama [ Wikidata ] | Cross country skiing | 2022 Winter | |
| Osamu Kodama | Alpine skiing | 1980 Winter, 1984 Winter | |
| Takamura Kodama | Art competitions | 1932 Summer, 1936 Summer | |
| Takeshi Kodama | Rowing | 1996 Summer | |
| Raido Kodanipork | Estonia | Road cycling | 1992 Summer, 1996 Summer | |
| Misao Kodate | Japan | Biathlon | 1988 Winter, 1992 Winter, 1994 Winter | |
| Barbora Kodedová | Czech Republic | Modern pentathlon | 2016 Summer | |
| Victor Kodei | Nigeria | Wrestling | 1988 Summer, 1996 Summer, 2000 Summer | |
| Karel Kodejška | Czechoslovakia | Ski jumping | 1972 Winter, 1976 Winter | |
| Uroš Kodelja | Slovenia | Canoe slalom | 2004 Summer | |
| Teresa Kodelska | Poland | Alpine skiing | 1952 Winter | |
| Takehiro Kodera | Japan | Short track speed skating | 1998 Winter, 2002 Winter | |
| Friederike Koderitsch | Netherlands | Fencing | 1928 Summer | |
| Jiří Kodeš | Czechoslovakia | Canoe sprint | 1960 Summer | |
| Angel Kodinov | Bulgaria | 2016 Summer | |
| Anastasiya Kodirova | Russia | Volleyball | 2000 Summer | |
| Raykhona Kodirova | Uzbekistan | Boxing | 2020 Summer | |
| Kobamelo Kodisang | South Africa | Football | 2020 Summer | |
| Jiří Kodl | Bohemia | Tennis | 1912 Summer | |
| Miloslav Kodl | Czechoslovakia | Basketball | 1952 Summer | |
| Lindita Kodra | Albania | Shooting | 2008 Summer | |
| Tilen Kodrin | Slovenia | Handball | 2024 Summer | |
| Regina Kodymová-Jirkalová | Czechoslovakia, Czech Republic | Shooting | 1992 Summer, 1996 Summer | |
| Đuro Kodžo | Bosnia and Herzegovina | Athletics | 2000 Summer | |
| Kevin Koe | Canada | Curling | 2018 Winter | |
| Aron Koech | Kenya | Athletics | 2016 Summer | |
| Benjamin Koech | 1992 Summer | |
| Cherono Koech | 2012 Summer | |
| Edwin Koech | 1984 Summer | |
| Isiah Koech | 2012 Summer, 2016 Summer | |
| John Kibet Koech | Bahrain | 2016 Summer, 2020 Summer | |
| Paul Koech | Kenya | 1996 Summer | |
| Paul Kipsiele Koech | 2004 Summer | |
| Peter Koech | 1988 Summer | |
| Simon Koech | 2024 Summer | |
| William Koech | 1992 Summer | |
| Éric Koechlin | France | Canoe slalom | 1972 Summer | |
| Samuel Koechlin | Switzerland | Equestrian eventing | 1956 Summer | |
| Thomas Koechlin | Canoe slalom | 2020 Summer | |
| Henry Koeder [ Wikidata ] | United States | Artistic gymnastics | 1904 Summer | |
| Vera Koedooder | Netherlands | Track cycling | 2012 Summer | |
| Alexandra Koefoed | Norway | Sailing | 2008 Summer | |
| Einar Koefoed | 1964 Summer | |
| Lotte Koefoed | Denmark | Rowing | 1984 Summer | |
| Peter Koefoed | Field hockey | 1928 Summer | |
| Gaston Koëger [ Wikidata ] | France | Athletics | 1908 Summer | |
| Ernest Koehler | United States | 1936 Summer | |
| Gerhard Koehler | Austria | Bobsleigh | 2006 Winter | |
| Gerard Koel | Netherlands | Track cycling | 1964 Summer | |
| Hans Koeleman | Athletics | 1984 Summer, 1988 Summer | |
| Josy Koelsch | France | Canoe sprint | 1952 Summer | |
| Martsel Koen | Bulgaria | Shooting | 1960 Summer, 1964 Summer, 1968 Summer | |
| Joanne Koenders | Netherlands | Water polo | 2020 Summer | |
| Danielle Koenen | Field hockey | 1992 Summer | |
| Vera Koenen | Volleyball | 1992 Summer | |
| Fred Koenig [ Wikidata ] | United States | Wrestling | 1904 Summer | |
| Walter Koenig | Australia | 1988 Summer | |
| Wendy Koenig | United States | Athletics | 1972 Summer, 1976 Summer | |
| Lothar Koepsel | East Germany | Sailing | 1972 Summer | |
| Dorothea Köring | Germany | Tennis | 1912 Summer | |
| Heike Koerner | Mexico | Swimming | 1992 Summer | |
| Rebecca Koerner | Denmark | Road cycling | 2024 Summer | |
| Marko Koers | Netherlands | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Astrid van Koert | Rowing | 1996 Summer | |
| Silvia Koeswandi | Indonesia | Fencing | 1988 Summer | |
| Joëlle van Koetsveld van Ankeren | Netherlands | Short track speed skating | 1992 Winter | |
| Jos Koetz | Luxembourg | Football | 1920 Summer, 1924 Summer | |
| Adam van Koeverden | Canada | Canoe sprint | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Mark Koevermans | Netherlands | Tennis | 1992 Summer | |
| Pinit Koeykorpkeo | Thailand | Road cycling | 1972 Summer | |
| Franz Köfel | Austria | Bobsleigh | 1976 Winter | |
| Ekaterini Koffa | Greece | Athletics | 1988 Summer, 1996 Summer, 2000 Summer | |
| Barthélemy Koffi Baugré | Ivory Coast | Canoe sprint | 1972 Summer | |
| Mathieu Koffi M'Broh | 1972 Summer | |
| Denou Koffi | Togo | Athletics | 1984 Summer | |
| Georges Koffi | Republic of the Congo | Boxing | 1980 Summer | |
| Wilfried Koffi Hua | Ivory Coast | Athletics | 2016 Summer | |
| Jürgen Koffler | West Germany | 1984 Summer | |
| Osei Kofi | Ghana | Football | 1964 Summer, 1968 Summer, 1972 Summer | |
| Adolf Kofler | Austria | Road cycling | 1912 Summer | |
| Andreas Kofler | Ski jumping | 2006 Winter, 2010 Winter | |
| Jens Christian Kofoed | Denmark | Art competitions | 1924 Summer | |
| Erik Kofoed-Hansen | Fencing | 1932 Summer | |
| Espen Kofstad | Norway | Golf | 2016 Summer | |
| Junya Koga | Japan | Swimming | 2016 Summer | |
| Manabu Koga | 1956 Summer | |
| Sarina Koga | Volleyball | 2020 Summer, 2024 Summer | |
| Toshihiko Koga | Judo | 1988 Summer, 1992 Summer, 1996 Summer | |
| Toshinori Koga | Boxing | 1976 Summer | |
| Yoshiyuki Koga | Rugby sevens | 2024 Summer | |
| Yūta Koga [ Wikidata ] | Athletics | 2024 Summer | |
| Teruji Kogake | 1956 Summer | |
| Alexei Kogalev | Belgium | Diving | 1992 Summer | |
| Valentina Kogan | Argentina | Handball | 2016 Summer | |
| Junichi Kogawa | Japan | Nordic combined | 1994 Winter, 1998 Winter | |
| Karl Kögel | Germany | Ice hockey | 1936 Winter | |
| Anton Kogler | Austria | Cross country skiing | 1964 Winter | |
| Armin Kogler | Ski jumping | 1980 Winter, 1984 Winter | |
| Benjamin Kogo | Kenya | Athletics | 1964 Summer, 1968 Summer | |
| Micah Kogo | 2008 Summer | |
| Takao Kogo | Japan | Rowing | 1964 Summer | |
| Andrés Kogovsek | Argentina | Handball | 2012 Summer | |
| Gogi Koguashvili | Unified Team, Russia | Wrestling | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Shigeo Kogure | Japan | Weightlifting | 1960 Summer | |
| Tamatsu Kogure | Rowing | 1952 Summer | |
| Koh Chong Jin | Malaysia | Field hockey | 1968 Summer | |
| Koh Chun-son | North Korea | Athletics | 1976 Summer, 1980 Summer | |
| Desmond Koh | Singapore | Swimming | 1988 Summer, 1992 Summer, 1996 Summer | |
| Donald Koh | Badminton | 1992 Summer | |
| Koh Eng Kian | Judo | 1976 Summer | |
| Koh Eng Tong | Malaya | Weightlifting | 1956 Summer | |
| Gerald Koh | Singapore | Swimming | 1996 Summer | |
| Koh Hock Seng | Malaysia | Field hockey | 1964 Summer, 1968 Summer | |
| Michelle Koh | Golf | 2016 Summer | |
| Koh Seng Leong | Singapore | Sailing | 2000 Summer, 2008 Summer | |
| Koh Suk-chang | South Korea | Handball | 1984 Summer, 1988 Summer | |
| Terence Koh | Singapore | Sailing | 2008 Summer | |
| Rebeka Ibrahima | Latvia | Weightlifting | 2016 Summer | |
| Hans Kohala | Sweden | Luge | 1992 Winter, 1994 Winter | |
| Svante Kohala | 2022 Winter | |
| Tove Kohala | 2022 Winter | |
| Liubym Kohan | Ukraine | Ski jumping | 1998 Winter | |
| Harumi Kohara | Japan | Badminton | 1992 Summer | |
| Doris Kohardt | East Germany | Swimming | 1968 Summer | |
| Claudia Kohde-Kilsch | West Germany | Tennis | 1988 Summer | |
| Harina Kohere | New Zealand | Field hockey | 1984 Summer | |
| Kamel Kohil | Algeria | Athletics | 2000 Summer | |
| Uasi Vi Kohinoa | Tonga | Weightlifting | 1992 Summer | |
| Tahmina Kohistani | Afghanistan | Athletics | 2012 Summer | |
| Masahito Kohiyama | Japan | Baseball | 1992 Summer | |
| Mohammad Asif Kohkan | Afghanistan | Wrestling | 1960 Summer | |
| Geoffrey Kohl [ Wikidata ] | Netherlands | Baseball | 1996 Summer | |
| Jurij Kohl | Germany | Wrestling | 2004 Summer | |
| Leopold Kohl | Austria | Cross country skiing, Nordic combined | 1952 Winter, 1956 Winter, 1964 Winter | |
| Nicholas Kohl [ Wikidata ] | Italy | Rowing | 2024 Summer | |
| Veronika Kohlbach | Austria | Athletics | 1936 Summer | |
| Jannik Kohlbacher | Germany | Handball | 2024 Summer | |
| Benny Kohlberg | Sweden | Cross country skiing | 1980 Winter, 1984 Winter | |
| Angelina Köhler | Germany | Swimming | 2024 Summer | |
| Anna Köhler | Bobsleigh | 2018 Winter | |
| Christa Köhler | East Germany | Diving | 1972 Summer, 1976 Summer | |
| Claude Kohler | United States | Sailing | 1960 Summer | |
| Dirk Köhler | West Germany | Shooting | 1988 Summer | |
| Hans Köhler | Germany | Swimming | 1956 Summer | |
| Hans Kohler | Switzerland | Weightlifting | 1960 Summer | |
| Hermann Köhler | West Germany | Athletics | 1972 Summer | |
| Horst Köhler | East Germany | Equestrian dressage | 1968 Summer, 1972 Summer | |
| Jürgen Köhler | Canoe slalom | 1972 Summer | |
| Kara Kohler | United States | Rowing | 2012 Summer, 2020 Summer, 2024 Summer | |
| Käthe Köhler | Germany | Diving | 1936 Summer | |
| Koos Köhler | Netherlands | Water polo | 1928 Summer | |
| Manuel Köhler | Austria | Canoe slalom | 1992 Summer, 1996 Summer, 2000 Summer | |
| Norbert Kohler | Saar | Wrestling | 1952 Summer | |
| Sarah Köhler | Germany | Swimming | 2016 Summer, 2020 Summer | |
| Siegfried Köhler | Track cycling | 1956 Summer, 1960 Summer | |
| Sjaak Köhler | Netherlands | Swimming, Water polo | 1924 Summer, 1928 Summer | |
| Thomas Köhler | Germany, East Germany | Luge | 1964 Winter, 1968 Winter | |
| Urs Kohler | Switzerland | Sailing | 1972 Summer | |
| Heinz Kohlhaas | Germany | Boxing | 1932 Summer | |
| Karsten Kohlhaas | Handball | 1996 Summer | |
| Walther Kohlhase | Art competitions | 1932 Summer | |
| Paul Kohlhoff | Sailing | 2016 Summer, 2020 Summer, 2024 Summer | |
| Shah Kohli | India | Judo | 1996 Summer | |
| Gabriele Kohlisch | Germany | Luge | 1992 Winter, 1994 Winter | |
| Fabienne Kohlmann | Athletics | 2012 Summer, 2016 Summer | |
| Patricia Kohlmann | Mexico | Swimming | 1984 Summer, 1988 Summer | |
| Willy Kohlmey | Germany | Athletics | 1908 Summer | |
| Martina Kohlová | Slovakia | Canoe sprint | 2008 Summer, 2012 Summer, 2016 Summer | |
| Birgit Kohlrusch | West Germany | Cross country skiing | 1988 Winter | |
| Philipp Kohlschreiber | Germany | Tennis | 2016 Summer, 2020 Summer | |
| Mike Kohn | United States | Bobsleigh | 2002 Winter, 2010 Winter | |
| Otto Kohn | Germany | Athletics | 1928 Summer | |
| René Kohn | Luxembourg | Swimming | 1952 Summer, 1956 Summer | |
| Marina Köhncke | Germany | Equestrian eventing | 2000 Summer | |
| Peter Kohnke | Germany, West Germany | Shooting | 1960 Summer, 1968 Summer | |
| Ladislav Kohout [ Wikidata ] | Czechoslovakia | Art competitions | 1932 Summer | |
| Zdeněk Kohout | Bobsleigh | 1992 Winter | |
| Jan Kohoutek | Luge | 1992 Winter | |
| Carsten Köhrbrück | Germany | Athletics | 1992 Summer | |
| Oliver Köhrmann | Handball | 2008 Summer | |
| Mohamed Kohsrof | North Yemen | Judo | 1988 Summer | |
| Sławomir Kohut | Poland | Road cycling | 2004 Summer | |
| Mifuyu Koide | Japan | Rugby sevens | 2016 Summer, 2020 Summer | |
| Miku Koide | Water polo | 2020 Summer | |
| Misato Koide | Archery | 1996 Summer | |
| José Luis Koifman | Chile | Alpine skiing | 1976 Winter | |
| Roberto Koifman | 1976 Winter | |
| Yoko Koikawa | Japan | Swimming | 1992 Summer | |
| Akihiko Koike | Athletics | 2000 Summer | |
| Akihiro Koike | Rowing | 1984 Summer | |
| Hirofumi Koike | Athletics | 1988 Summer | |
| Katsunori Koike [ Wikidata ] | Short track speed skating | 2022 Winter | |
| Kazumori Koike | Canoe sprint | 1984 Summer | |
| Reizo Koike | Swimming | 1932 Summer, 1936 Summer | |
| Satomi Koike | Speed skating | 1972 Winter | |
| Shiori Koike | Ice hockey | 2014 Winter, 2018 Winter, 2022 Winter | |
| Yuki Koike | Athletics | 2020 Summer | |
| Mae Koime | Papua New Guinea | 2004 Summer, 2008 Summer | |
| Erkki Koiso | Finland | Ice hockey | 1960 Winter | |
| Noriko Koiso | Japan | Basketball | 1996 Summer, 2004 Summer | |
| Ryōhei Koiso | Art competitions | 1936 Summer | |
| Karl Kõiv | Estonia | Weightlifting | 1920 Summer | |
| Kauri Kõiv | Biathlon | 2010 Winter, 2014 Winter, 2018 Winter | |
| Küllo Kõiv | Wrestling | 1992 Summer, 1996 Summer | |
| Anu Koivisto | Finland | Swimming | 1996 Summer, 2000 Summer | |
| Arto Koivisto | Cross country skiing | 1976 Winter | |
| Miika Koivisto | Ice hockey | 2018 Winter | |
| Mikko Koivu | 2006 Winter, 2010 Winter | |
| Saku Koivu | 1994 Winter, 1998 Winter, 2006 Winter, 2010 Winter | |
| Ritva Koivula | Swimming | 1952 Summer | |
| Pertti Koivulahti | Ice hockey | 1976 Winter | |
| Heli Koivula-Kruger | Athletics | 1996 Summer, 2004 Summer | |
| Eero Koivumäki | Rowing | 1952 Summer | |
| Keijo Koivumäki | 1952 Summer | |
| Nina Koivumäki | Judo | 2008 Summer | |
| Hannes Koivunen | Boxing | 1936 Summer | |
| Hugo Koivuniemi | Diving | 1924 Summer | |
| Kaarina Koivuniemi | Athletics | 1952 Summer | |
| Anssi Koivuranta | Nordic combined, Ski jumping | 2006 Winter, 2010 Winter, 2014 Winter | |
| Nurlan Koizhaiganov | Kazakhstan | Wrestling | 2004 Summer | |
| Ibuki Koizumi | Japan | Sailing | 2020 Summer | |
| Isao Koizumi | Volleyball | 1968 Summer | |
| George Kojac | United States | Swimming | 1928 Summer | |
| Terje Kojedal | Norway | Football | 1984 Summer | |
| Kamana Koji | Democratic Republic of the Congo | Athletics | 1988 Summer | |
| Andreja Kojić | Yugoslavia | Football | 1920 Summer | |
| Dijana Kojić | Bosnia and Herzegovina | Athletics | 2000 Summer | |
| Frane Tomislav Kojić | Croatia | Table tennis | 2020 Summer | |
| Fumi Kojima | Japan | Athletics | 1936 Summer | |
| Hiroshi Kojima | Field hockey | 1960 Summer | |
| Hirotami Kojima | Baseball | 1992 Summer | |
| Kazue Kojima | Swimming | 1932 Summer, 1936 Summer | |
| Keiji Kojima | Track cycling | 1992 Summer | |
| Manami Kojima [ Wikidata ] | Volleyball | 2024 Summer | |
| Ryota Kojima [ Wikidata ] | Speed skating | 2022 Winter | |
| Shigeyuki Kojima | Athletics | 2000 Summer | |
| Yasuhiko Kojima | Swimming | 1936 Summer | |
| Yoshio Kojima | Athletics | 1956 Summer | |
| Yoshio Kojima | Field hockey | 1960 Summer | |
| Yukiyo Kojima | Volleyball | 1968 Summer | |
| Hannu Kojo | Finland | Canoe sprint | 1976 Summer, 1980 Summer | |
| Jaqson Kojoroski | Brazil | Handball | 2004 Summer | |
| Kanchhi Maya Koju | Nepal | Athletics | 2004 Summer | |
| Ada Kok | Netherlands | Swimming | 1964 Summer, 1968 Summer | |
| Femke Kok | Speed skating | 2022 Winter | |
| Gretta Kok | Swimming | 1960 Summer, 1964 Summer | |
| Irene de Kok | Judo | 1992 Summer | |
| Jan Kok | Football | 1908 Summer | |
| Kok Kum Woh | Singapore, Malaysia | Shooting | 1960 Summer, 1964 Summer | |
| Melanie Kok | Canada | Rowing | 2008 Summer | |
| Tevin Kok | South Africa | Field hockey | 2020 Summer, 2024 Summer | |
| Werner Kok | Rugby sevens | 2016 Summer | |
| Ahmed Nabil Koka | Egypt | Football | 2024 Summer | |
| Dienov Andres Koka | Republic of the Congo | Swimming | 2016 Summer | |
| Haruka Kokai [ Wikidata ] | Japan | Athletics | 2024 Summer | |
| Yumi Kokamo | 1992 Summer | |
| Leonidas Kokas | Greece | Weightlifting | 1996 Summer | |
| Péter Kokas | Hungary | Rowing | 1972 Summer | |
| Raphael Kokas | Austria | Track cycling | 2024 Summer | |
| Ushangi Kokauri | Azerbaijan | Judo | 2016 Summer, 2020 Summer, 2024 Summer | |
| Koke | Spain | Football | 2012 Summer | |
| Uğur Köken | Turkey | 1960 Summer | |
| Beatrix Kökény | Hungary | Handball | 1996 Summer, 2000 Summer | |
| Roland Kökény | Canoe sprint | 2000 Summer, 2004 Summer, 2012 Summer | |
| Mykhaylo Kokhan | Ukraine | Athletics | 2020 Summer, 2024 Summer | |
| Yury Kokhanets | Russia | Speed skating | 1998 Winter, 2002 Winter, 2006 Winter | |
| Andriy Kokhanovsky | Ukraine | Athletics | 1996 Summer | |
| Pavel Kokin | Russia | 2000 Summer | |
| John Kokinai | Papua New Guinea | 1976 Summer | |
| Kaspar Kokk | Estonia | Cross country skiing | 2006 Winter, 2010 Winter | |
| Byron Kokkalanis | Greece | Sailing | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Leni Kokkes-Hanepen | Netherlands | Fencing | 1960 Summer | |
| Konstantinos Kokkinakis | Greece | Water polo | 2008 Summer, 2012 Summer | |
| Thanasi Kokkinakis | Australia | Tennis | 2016 Summer | |
| Eirini Kokkinariou | Greece | Athletics | 2008 Summer | |
| Väinö Kokkinen | Finland | Wrestling | 1928 Summer, 1932 Summer, 1936 Summer | |
| Petri Kokko | Figure skating | 1992 Winter, 1994 Winter | |
| Ioannis Kokkodis | Greece | Swimming | 2000 Summer, 2004 Summer, 2008 Summer | |
| Pentti Kokkonen | Finland | Ski jumping | 1980 Winter, 1984 Winter | |
| Agnese Koklača | Latvia | Luge | 2010 Winter | |
| Georgia Kokloni | Greece | Athletics | 2004 Summer | |
| Paeaki Kokohu | Tonga | 1992 Summer | |
| Nikos Kokolodimitrakis | Greece | Handball | 2004 Summer | |
| Konstantin Kokora | Soviet Union | Figure skating | 1980 Winter | |
| Boris Kokorev | Soviet Union, Unified Team, Russia | Shooting | 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Anton Kokorin | Russia | Athletics | 2008 Summer | |
| Lev Kokorin [ Wikidata ] | Soviet Union | Water polo | 1952 Summer | |
| Nikita Kokorin | Kazakhstan | 2012 Summer | |
| Maksym Kokosha | Ukraine | Swimming | 2004 Summer | |
| Roman Kokoshko | Athletics | 2024 Summer | |
| Viktor Kokoshyn | Soviet Union | Rowing | 1980 Summer | |
| Mihai Kokossy | Romania | Fencing | 1952 Summer | |
| Leszek Kokoszka | Poland | Ice hockey | 1976 Winter, 1980 Winter | |
| Manfred Kokot | East Germany | Athletics | 1972 Summer, 1976 Summer | |
| Nicholas Kokotaylo | Great Britain | Judo | 1984 Summer | |
| Christina Kokotou | Greece | Athletics | 2000 Summer, 2004 Summer | |
| Peter Kokotowitsch | Austria | Wrestling | 1912 Summer | |
| Dimitrios Kokotsis | Greece | Art competitions | 1948 Summer | |
| Irina Kokoueva | Belarus | Biathlon | 1994 Winter | |
| Eduard Koksharov | Russia | Handball | 2000 Summer, 2004 Summer, 2008 Summer | |
| Mikko Kokslien | Norway | Nordic combined | 2010 Winter, 2014 Winter | |
| Sedef Köktentürk | Turkey | Sailing | 2008 Summer | |
| Hiroki Kokubo | Japan | Baseball | 1992 Summer | |
| Kazuhiro Kokubo | Snowboarding | 2006 Winter, 2010 Winter | |
| Leo Kokubo | Football | 2024 Summer | |
| Sakura Kokumai | United States | Karate | 2020 Summer | |
| Dolf van Kol | Netherlands | Football | 1928 Summer | |
| Hashem Kolahi | Iran | Wrestling | 1976 Summer | |
| Sara Kolak | Croatia | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Rok Kolander | Slovenia | Rowing | 2000 Summer, 2008 Summer | |
| Gertrude Kolar | Austria | Artistic gymnastics | 1948 Summer, 1952 Summer | |
| Jan Kolář | Czech Republic | Ice hockey | 2018 Winter | |
| Karel Kolář | Czechoslovakia | Athletics | 1980 Summer | |
| Luboš Kolář | Basketball | 1952 Summer | |
| Oldřich Kolář | Cross country skiing | 1924 Winter | |
| Vladimír Kolář | Speed skating | 1948 Winter, 1956 Winter | |
| Nina Kolarič | Slovenia | Athletics | 2008 Summer | |
| Chad Kolarik | United States | Ice hockey | 2018 Winter | |
| Miloslav Kolařík | Czechoslovakia | Weightlifting | 1968 Summer | |
| Jasna Kolar-Merdan | Yugoslavia, Austria | Handball | 1980 Summer, 1984 Summer, 1992 Summer | |
| Marija Kolaroska | North Macedonia | Cross country skiing | 2014 Winter | |
| Aleksandar Kolarov | Serbia | Football | 2008 Summer | |
| Adam Kolasa | Poland | Athletics | 2004 Summer | |
| Bolesław Kolasa | Ice hockey | 1948 Winter | |
| Marian Kolasa | Athletics | 1988 Summer | |
| Asmir Kolašinac | Serbia | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Sebastian Kolasiński | Poland | Figure skating | 1998 Winter, 2002 Winter | |
| Cary Kolat | United States | Wrestling | 2000 Summer | |
| Esther Kolawole | Nigeria | 2024 Summer | |
| Claudia Kolb | United States | Swimming | 1964 Summer, 1968 Summer | |
| Émile Kolb | Luxembourg | Football | 1924 Summer, 1928 Summer | |
| Ernst Kolb | Switzerland | Wrestling | 1948 Summer | |
| Hanna Kolb | Germany | Cross country skiing | 2010 Winter, 2014 Winter, 2018 Winter | |
| Willi Kolb | Weightlifting | 1956 Summer | |
| Cheslin Kolbe | South Africa | Rugby sevens | 2016 Summer | |
| Georg Kolbe | Germany | Art competitions | 1928 Summer | |
| Peter-Michael Kolbe | West Germany | Rowing | 1976 Summer, 1984 Summer, 1988 Summer | |
| Tanja Kolbe | Germany | Figure skating | 2014 Winter | |
| Fernand Kolbeck | France | Athletics | 1972 Summer, 1976 Summer | |
| Fred Kolberg | United States | Boxing | 1920 Summer | |
| Majtie Kolberg | Germany | Athletics | 2024 Summer | |
| Marek Kolbowicz | Poland | Rowing | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Lyudmila Kolchanova | Russia | Athletics | 2012 Summer | |
| Pavel Kolchin | Soviet Union | Cross country skiing | 1956 Winter, 1964 Winter | |
| Alevtina Kolchina | 1956 Winter, 1960 Winter, 1964 Winter, 1968 Winter | |
| Aleksandr Kolchinsky | Wrestling | 1976 Summer, 1980 Summer | |
| Ernő Kolczonay | Hungary | Fencing | 1980 Summer, 1988 Summer, 1992 Summer | |
| Antoni Kolczyński | Poland | Boxing | 1948 Summer | |
| Lisbet Kolding | Denmark | Football | 1996 Summer | |
| Karel Koldovský | Czechoslovakia | Ski jumping | 1924 Winter | |
| Halina Kołdras | Poland | Field hockey | 1980 Summer | |
| Jadwiga Kołdras | 1980 Summer | |
| Selwyn Kole | Solomon Islands | Athletics | 1996 Summer | |
| Júlia Kolečániová | Czechoslovakia | Handball | 1988 Summer | |
| Szymon Kołecki | Poland | Weightlifting | 2000 Summer, 2008 Summer | |
| Karolina Kołeczek | Athletics | 2016 Summer | |
| Igor Koleda | Belarus | Swimming | 2000 Summer | |
| Alexei Koledayev | Kazakhstan | Ice hockey | 2006 Winter | |
| Elias Kolega | Croatia | Alpine skiing | 2018 Winter | |
| Nataša Kolega | Yugoslavia | Handball | 1988 Summer | |
| Samuel Kolega | Croatia | Alpine skiing | 2018 Winter, 2022 Winter | |
| Valery Kolegov | Russia | Snowboarding | 2014 Winter | |
| David Kolehmainen | Finland | Wrestling | 1912 Summer | |
| Eero Kolehmainen | Cross country skiing | 1952 Winter, 1956 Winter | |
| Hannes Kolehmainen | Athletics | 1912 Summer, 1920 Summer, 1924 Summer | |
| Mikko Kolehmainen | Canoe sprint | 1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer | |
| Olli Kolehmainen | 1988 Summer, 1992 Summer | |
| Tatu Kolehmainen | Athletics | 1912 Summer, 1920 Summer | |
| Miloš Kolejka | Czechoslovakia | Artistic gymnastics | 1952 Summer | |
| František Kolenatý | Football | 1920 Summer, 1924 Summer | |
| Karel Kolesa | Rowing | 1968 Summer | |
| Olena Kolesnichenko | Ukraine | Athletics | 2016 Summer | |
| Svetlana Kolesnichenko | Russia, Russian Olympic Committee | Artistic swimming | 2016 Summer, 2020 Summer | |
| Vitali Kolesnik | Kazakhstan | Ice hockey | 2006 Winter | |
| Aleksey Kolesnikov | Russia | Swimming | 1996 Summer | |
| Kliment Kolesnikov | Russian Olympic Committee | 2020 Summer | |
| Leonid Kolesnikov | Soviet Union | 1960 Summer | |
| Nikolay Kolesnikov | Athletics | 1976 Summer | |
| Nikolay Kolesnikov | Weightlifting | 1976 Summer | |
| Sergey Kolesnikov | Russia | Judo | 1996 Summer | |
| Anastasiya Kolesnikova | Artistic gymnastics | 2000 Summer | |
| Tetiana Kolesnikova | Ukraine | Rowing | 2004 Summer, 2008 Summer | |
| Anatoly Kolesov | Soviet Union | Road cycling | 1952 Summer | |
| Anatoly Kolesov | Wrestling | 1964 Summer | |
| Alexey Kolessov | Kazakhstan | Track cycling | 2004 Summer | |
| Igor Kolessov | Russia | Shooting | 2000 Summer | |
| Stamatios Kolethras | Greece | Boxing | 1984 Summer | |
| Slavko Koletić | Yugoslavia | Wrestling | 1972 Summer | |
| Georgios Koletis | Greece | Track cycling | 1896 Summer | |
| Tim Koleto | Japan | Figure skating | 2022 Winter | |
| Angel Kolev | Bulgaria | Athletics | 1952 Summer | |
| Binko Kolev | 1980 Summer | |
| Deyan Kolev | Artistic gymnastics | 1988 Summer, 1992 Summer | |
| Ivan Kolev | Football | 1952 Summer, 1956 Summer, 1960 Summer | |
| Ivan Kolev | Wrestling | 1972 Summer, 1976 Summer | |
| Nedelcho Kolev | Weightlifting | 1980 Summer | |
| Nikolay Kolev | Rowing | 1972 Summer | |
| Nikolay Kolev | Athletics | 1992 Summer | |
| Nikolay Kolev | Rowing | 1996 Summer | |
| Nikolay Kolev | Weightlifting | 2004 Summer | |
| Stancho Kolev | Wrestling | 1960 Summer, 1964 Summer | |
| Vladimir Kolev | Boxing | 1972 Summer, 1976 Summer | |
| Yoan Kolev | Sailing | 2012 Summer | |
| Diana Koleva | Badminton | 1992 Summer, 1996 Summer, 2000 Summer | |
| Maria Koleva | Rhythmic gymnastics | 1996 Summer | |
| Petrana Koleva | Canoe sprint | 1972 Summer | |
| Stefka Koleva | Rowing | 1980 Summer | |
| Andrey Kolganov | Kazakhstan | Fencing | 2000 Summer | |
| Michael Kolganov | Israel | Canoe sprint | 2000 Summer, 2004 Summer, 2008 Summer | |
| Mikhail Kolganov | Kazakhstan | Athletics | 2004 Summer | |
| Lauri Kolho | Finland | Shooting | 1908 Summer, 1912 Summer | |
| Voitto Kolho | 1908 Summer, 1912 Summer, 1920 Summer, 1924 Summer | |
| Yrjö Kolho | 1920 Summer | |
| Iryna Koliadenko | Ukraine | Wrestling | 2020 Summer, 2024 Summer | |
| Patrick Kolijn | Netherlands | Ice hockey | 1980 Winter | |
| Osea Kolinisau | Fiji | Rugby sevens | 2016 Summer | |
| Eva Kolínská | Czechoslovakia | Canoe sprint | 1960 Summer | |
| Alexios Kolitsopoulos | Greece | Wrestling | 2004 Summer | |
| John Kolius | United States | Sailing | 1976 Summer | |
| Kalle Koljonen | Finland | Badminton | 2020 Summer, 2024 Summer | |
| Kirsten van der Kolk | Netherlands | Rowing | 2000 Summer, 2004 Summer, 2008 Summer | |
| Niels van der Kolk | Water polo | 1996 Summer | |
| Sabrina Kolker | Canada | Rowing | 2004 Summer, 2008 Summer | |
| Mitch Kolkman | Netherlands | Triathlon | 2024 Summer | |
| Simon Kolkman | Rowing | 2000 Summer | |
| Olha Kolkova | Soviet Union | 1976 Summer | |
| Bill Koll | United States | Wrestling | 1948 Summer | |
| Dominik Koll | Austria | Swimming | 2004 Summer, 2008 Summer | |
| Josef Koll | Biathlon | 1980 Winter | |
| Igor Kollár | Czechoslovakia, Slovakia | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Miklós Kollár | Hungary | Swimming | 1996 Summer | |
| Roman Kollar | Slovakia | Wrestling | 1996 Summer | |
| Cárlos Koller | Chile | Road cycling | 1912 Summer | |
| Edmund Koller | Germany | Bobsleigh | 1956 Winter | |
| Jan Koller | Czechoslovakia | Shooting | 1936 Summer | |
| Johann Koller | Austria | Field hockey | 1948 Summer, 1952 Summer | |
| Lorenz Koller | Luge | 2018 Winter, 2022 Winter | |
| Patrick Koller | Freestyle skiing | 2010 Winter, 2014 Winter | |
| Gert Kölli | Swimming | 1960 Summer, 1964 Summer | |
| Jakob Kölliker | Switzerland | Ice hockey | 1976 Winter, 1988 Winter | |
| Paul Kölliker | Rowing | 1960 Summer | |
| Werner Kölliker | 1960 Summer | |
| Enrico Kölling | Germany | Boxing | 2012 Summer | |
| Janne Kolling | Denmark | Handball | 1996 Summer, 2000 Summer | |
| Johannes Kolling [ Wikidata ] | Netherlands | Fencing | 1912 Summer | |
| Jaroslav Kollinger | Czechoslovakia | Artistic gymnastics | 1936 Summer | |
| Walter Kollmann | Austria | Football | 1952 Summer | |
| Stefan Köllner | Germany | Modern pentathlon | 2012 Summer | |
| Stein Kollshaugen | Norway | Football | 1984 Summer | |
| Herbert Kolly | Switzerland | Freestyle skiing | 1994 Winter | |
| Sandra Kolly | Shooting | 2008 Summer | |
| Aleksandr Kolmakov | Kazakhstan | Ski jumping | 1994 Winter, 1998 Winter | |
| Pavel Kolmakov | Freestyle skiing | 2014 Winter, 2018 Winter, 2022 Winter | |
| Jože Kolman | Yugoslavia, Slovenia | Artistic gymnastics | 1988 Summer, 1992 Summer | |
| Wolfgang Kolmsee | West Germany | Athletics | 1976 Summer | |
| István Kolnai | Hungary | Canoe sprint | 1936 Summer | |
| Jörgen Kolni | Sweden | Sailing | 1968 Summer, 1976 Summer | |
| Peter Kolni | 1968 Summer, 1972 Summer, 1976 Summer | |
| Ľubomír Kolník | Slovakia | Ice hockey | 1994 Winter, 1998 Winter | |
| Mirko Kolnik | Yugoslavia | Athletics | 1960 Summer | |
| Randal Kolo Muani | France | Football | 2020 Summer | |
| Semen Kolobayev | Russia | Luge | 1998 Winter | |
| Pavel Kolobkov | Soviet Union, Unified Team, Russia | Fencing | 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Alexandr Kolobnev | Russia | Road cycling | 2004 Summer, 2008 Summer, 2012 Summer | |
| Violetta Kolobova | Russia, Russian Olympic Committee | Fencing | 2012 Summer, 2016 Summer, 2020 Summer | |
| Kristýna Kolocová | Czech Republic | Beach volleyball | 2012 Summer | |
| Igor Kolodinsky | Russia | 2008 Summer | |
| Oleh Kolodiy | Ukraine | Diving | 2020 Summer, 2024 Summer | |
| Yevgeniya Kolodko | Russia | Athletics | 2012 Summer | |
| Paweł Kołodziński | Poland | Sailing | 2012 Summer, 2016 Summer, 2020 Summer | |
| Alysha Koloi | Australia | Diving | 2024 Summer | |
| Kelsey Kolojejchick | United States | Field hockey | 2016 Summer | |
| Éric Koloko | France | Artistic gymnastics | 1976 Summer | |
| Oleksiy Kolokoltsev | Ukraine | Weightlifting | 2004 Summer | |
| Berta Kolokoltseva | Soviet Union | Speed skating | 1964 Winter | |
| Krzysztof Kołomański | Poland | Canoe slalom | 1992 Summer, 1996 Summer, 2000 Summer | |
| Elena Kolomina | Kazakhstan | Cross country skiing | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Olga Kolomiyets | Ukraine | Volleyball | 1996 Summer | |
| Christodoulos Kolomvos | Greece | Water polo | 2016 Summer, 2020 Summer | |
| György Kolonics | Hungary | Canoe sprint | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| René Kolonko | Germany | Swimming | 2004 Summer | |
| Ameli Koloska | West Germany | Athletics | 1968 Summer, 1972 Summer | |
| Margarita Kolosov | Germany | Rhythmic gymnastics | 2024 Summer | |
| Sergei Kolosov | Belarus | Ice hockey | 2010 Winter | |
| Peter Kolotouros | Greece | Bobsleigh | 1998 Winter | |
| Aleksandr Kolotov | Soviet Union, Unified Team | Water polo | 1988 Summer, 1992 Summer | |
| Viktor Kolotov | Soviet Union | Football | 1972 Summer, 1976 Summer | |
| Andrey Kolotvin | Kazakhstan | Alpine skiing | 1994 Winter | |
| Radim Koloušek | Czechoslovakia | 1964 Winter | |
| Lenka Koloušková | Shooting | 1988 Summer, 1992 Summer | |
| Nataliya Kolovanova | Unified Team | Athletics | 1992 Summer | |
| Dimitrios Kolovos | Greece | Swimming | 1960 Summer | |
| Henry Kolowrat Jr. | United States | Fencing | 1960 Summer | |
| Samantha Kolowratová | Czech Republic | Ice hockey | 2022 Winter | |
| Mikael Koloyan | Armenia | Swimming | 2008 Summer, 2012 Summer | |
| Dávid Kolozár | Hungary | 2004 Summer | |
| Mark Kolozsvary | United States | Baseball | 2020 Summer | |
| Vitaliy Kolpakov | Ukraine | Athletics | 1996 Summer | |
| Tatyana Kolpakova | Soviet Union | 1980 Summer | |
| Rebekah Kolstad | China | Ice hockey | 2022 Winter | |
| Henrik Koltai | Hungary | Athletics | 1936 Summer | |
| Grzegorz Kołtan | Poland | Canoe sprint | 1976 Summer, 1980 Summer | |
| Ole Kolterud | Norway | Nordic combined | 1928 Winter | |
| Sverre Kolterud | 1932 Winter | |
| Fjodor Koltšin | Soviet Union | 1980 Winter | |
| Konstantin Koltsov | Belarus | Ice hockey | 2002 Winter, 2010 Winter | |
| Olena Koltsova | Ukraine | Fencing | 2000 Summer | |
| Anatoli Koltuniewicz | Australia | Basketball | 1972 Summer | |
| Yulia Koltunova | Russia | Diving | 2004 Summer, 2012 Summer | |
| Stephan Koltzk | Germany | Rowing | 2004 Summer | |
| Ðulijano Koludra | Croatia | Bobsleigh | 2002 Winter | |
| Jana Kolukanova | Estonia | Swimming | 2000 Summer, 2004 Summer | |
| Leonid Kolumbet | Soviet Union | Track cycling | 1960 Summer, 1964 Summer | |
| Mykola Kolumbet | Road cycling | 1956 Summer | |
| Mikhail Kolyada | Russian Olympic Committee | Figure skating | 2018 Winter | |
| Sergey Kolyaskin | Soviet Union | Rowing | 1972 Summer | |
| Mikhail Kolyushev | Track cycling | 1968 Summer | |
| Olaf Kölzig | Germany | Ice hockey | 1998 Winter, 2006 Winter | |
| Mary Kom | India | Boxing | 2012 Summer, 2020 Summer | |
| Ľudovít Komadel | Czechoslovakia | Swimming | 1952 Summer | |
| Shunsuke Komamura | Japan | Cross country skiing | 2006 Winter | |
| Ludvík Kománek | Czechoslovakia | Athletics | 1936 Summer | |
| Yūichi Komano | Japan | Football | 2004 Summer | |
| Albert Komański | Poland | Athletics | 2024 Summer | |
| Polina Komar | Russian Olympic Committee | Artistic swimming | 2020 Summer | |
| Władysław Komar | Poland | Athletics | 1964 Summer, 1968 Summer, 1972 Summer | |
| Jaroslava Komárková | Czechoslovakia | 1948 Summer, 1952 Summer | |
| Alexa Komarnycky | Canada | Swimming | 2008 Summer, 2012 Summer | |
| Ede Komáromi | Hungary | Basketball | 1952 Summer | |
| Tibor Komáromi | Wrestling | 1988 Summer, 1992 Summer | |
| Aleksandr Komarov | Serbia | 2024 Summer | |
| Aleksey Komarov | Soviet Union | Rowing | 1952 Summer | |
| Evgeny Komarov | Russia | Cycling BMX racing | 2016 Summer | |
| Ivan Komarov | Soviet Union | Fencing | 1952 Summer | |
| Leo Komarov | Finland | Ice hockey | 2014 Winter, 2022 Winter | |
| Mykola Komarov | Soviet Union | Rowing | 1988 Summer | |
| Sergey Komarov | Russia | Alpine skiing | 2002 Winter | |
| Vladimir Komarov | Soviet Union | Speed skating | 1972 Winter | |
| Stanislava Komarova | Russia | Swimming | 2004 Summer, 2008 Summer | |
| Yelena Komarova | Azerbaijan | Wrestling | 2008 Summer | |
| Alina Komashchuk | Ukraine | Fencing | 2016 Summer, 2024 Summer | |
| Akira Komata | Japan | 2024 Summer | |
| József Komatits | Hungary | 1976 Summer | |
| Kazunori Komatsu | Japan | Sailing | 1976 Summer, 1988 Summer, 1992 Summer, 1996 Summer | |
| Misato Komatsubara | Figure skating | 2022 Winter | |
| David Komatz | Austria | Biathlon | 2022 Winter | |
| Katharina Komatz | 2014 Winter, 2018 Winter, 2022 Winter | |
| Yasuhiro Komazaki | Japan | Swimming | 1972 Summer | |
| Rika Komazawa | Field hockey | 2004 Summer, 2008 Summer, 2012 Summer | |
| Arijan Komazec | Croatia | Basketball | 1992 Summer, 1996 Summer | |
| Atanas Komchev | Bulgaria | Wrestling | 1988 Summer, 1992 Summer | |
| Daniel N'Gom Kome | Cameroon | Football | 2000 Summer | |
| Brian Komen | Kenya | Athletics | 2024 Summer | |
| Kouakou Komenan | Ivory Coast | 1972 Summer | |
| Jaime Komer | United States | Water polo | 2008 Summer | |
| Claudine Komgang | Cameroon | Athletics | 2000 Summer | |
| Takuto Kominami | Japan | 2020 Summer | |
| Petra Komínková | Czechoslovakia | Handball | 1980 Summer | |
| Rachel Komisarz | United States | Swimming | 2004 Summer | |
| Vera Komisova | Soviet Union | Athletics | 1980 Summer | |
| Sergey Komissarov | Russia, Russian Olympic Committee | Sailing | 2016 Summer, 2020 Summer | |
| Oksana Komissarova | Soviet Union | Swimming | 1980 Summer | |
| Ioannis Komitoudis | Greece | Athletics | 1960 Summer | |
| Etsuko Komiya | Japan | 1936 Summer | |
| János Komjáti | Hungary | Weightlifting | 1976 Summer | |
| Magdolna Komka | Athletics | 1968 Summer, 1972 Summer | |
| Akoko Komlanvi [ Wikidata ] | Togo | Rowing | 2024 Summer | |
| András Komm | Hungary | Sailing | 1996 Summer | |
| Gennady Komnatov | Soviet Union | Road cycling | 1972 Summer | |
| Vaso Komnenić | Yugoslavia | Athletics | 1980 Summer | |
| Jelica Komnenović | Basketball | 1980 Summer, 1984 Summer | |
| Veerapan Komolsen | Thailand | Boxing | 1964 Summer | |
| Imre Komora | Hungary | Football | 1964 Summer | |
| Kuriko Komori | Japan | Handball | 1976 Summer | |
| Tomomi Komori | Field hockey | 2004 Summer, 2008 Summer | |
| Yoshie Komori | Fencing | 1964 Summer | |
| Dmitry Komornikov | Russia | Swimming | 2000 Summer, 2004 Summer, 2008 Summer | |
| Dagmara Komorowicz | Poland | 1996 Summer | |
| Janusz Komorowski | Equestrian jumping | 1936 Summer | |
| Viktoria Komova | Russia | Artistic gymnastics | 2012 Summer | |
| Gert Kompajn | Austria | Ice hockey | 1988 Winter | |
| Viktor Kompaniyets | Soviet Union | Athletics | 1960 Summer, 1964 Summer | |
| Vincent Kompany | Belgium | Football | 2008 Summer | |
| Jana Komrsková | Czech Republic | Artistic gymnastics | 2000 Summer, 2004 Summer | |
| Ussama Komsan | Egypt | Volleyball | 2000 Summer | |
| Andrea Komšić | Croatia | Alpine skiing | 2014 Winter, 2018 Winter, 2022 Winter | |
| Martha Komu | Kenya | Athletics | 2008 Summer | |
| Noora Komulainen | Finland | Golf | 2016 Summer, 2024 Summer | |
| Erika Komura | Japan | Artistic swimming | 2008 Summer | |
| Nozomi Komuro | Skeleton | 2014 Winter | |
| Nanthana Komwong | Thailand | Table tennis | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Haruhiko Kon | Japan | Field hockey | 1932 Summer | |
| Maxwell Konadu | Ghana | Football | 1992 Summer | |
| Mika Konaka | Japan | Curling | 2002 Winter | |
| Serik Konakbayev | Soviet Union | Boxing | 1980 Summer | |
| Elvis Konamegui | Cameroon | 1996 Summer | |
| Arsène Kra Konan | Ivory Coast | Athletics | 1976 Summer | |
| Hortense Konan | Handball | 1988 Summer | |
| Karl Konan | France | 2024 Summer | |
| Sebastien Konan | Ivory Coast | Taekwondo | 2000 Summer, 2008 Summer | |
| Anna Konanykhina | Russian Olympic Committee | Diving | 2020 Summer | |
| Velichko Konarov | Bulgaria | Weightlifting | 1964 Summer | |
| Janina Konarska | Poland | Art competitions | 1932 Summer | |
| Dawid Konarski | Volleyball | 2016 Summer | |
| Tomasz Konarzewski | Boxing | 1924 Summer | |
| Aminata Konaté | Guinea | Athletics | 1992 Summer | |
| Moussa Konaté | Senegal | Football | 2012 Summer | |
| Pa Konate | Sweden | 2016 Summer | |
| Jon Koncak | United States | Basketball | 1984 Summer | |
| Mária Končeková | Czechoslovakia | Handball | 1980 Summer | |
| Billy Konchellah | Kenya | Athletics | 1984 Summer | |
| Wiesław Kończak | Poland | Wrestling | 1980 Summer | |
| Bruno Konczylo | France | Athletics | 1996 Summer | |
| Yuri Kondakov | Soviet Union | Speed skating | 1976 Winter, 1980 Winter | |
| Yuliya Kondakova | Russia | Athletics | 2008 Summer, 2012 Summer | |
| Nicole Konderla [ Wikidata ] | Poland | Ski jumping | 2022 Winter | |
| Ivan Kondev | Bulgaria | Artistic gymnastics | 1968 Summer, 1972 Summer | |
| Todor Kondev | 1964 Summer | |
| Olt Kondirolli | Kosovo | Swimming | 2020 Summer | |
| Ľuboš Kondis | Slovakia | Cycling mountain bike | 2004 Summer | |
| Ami Kondo | Japan | Judo | 2016 Summer | |
| Kaede Kondo | Basketball | 2016 Summer | |
| Kensuke Kondoh | Baseball | 2020 Summer | |
| Maharu Kondo | Handball | 2020 Summer | |
| Masako Kondo | Volleyball | 1964 Summer | |
| Takashi Kondo | Artistic gymnastics | 1932 Summer | |
| Takayo Kondo | Athletics | 2004 Summer | |
| Taro Kondo | Speed skating | 2014 Winter | |
| Yōko Kondō | Ice hockey | 1998 Winter, 2014 Winter | |
| Yukari Kondo | Curling | 1998 Winter | |
| Zoltan Kondorossy | Romania | Wrestling | 1936 Summer | |
| Solomon Kondowe | Malawi | Boxing | 1984 Summer | |
| Pavel Kondr | Czechoslovakia | Track cycling | 1968 Summer | |
| Vladimir Kondra | Soviet Union | Volleyball | 1972 Summer, 1976 Summer, 1980 Summer | |
| Michał Kondracki | Poland | Art competitions | 1932 Summer | |
| Anna Kondrashina | Soviet Union | Rowing | 1976 Summer | |
| Gennadiy Kondrashov | Athletics | 1968 Summer | |
| Peter Kondrát | Czech Republic | Bobsleigh | 1998 Winter, 2002 Winter | |
| Vasiliy Kondratenko | Russian Olympic Committee | 2018 Winter | |
| Mark Kondratiuk | Figure skating | 2022 Winter | |
| Ilya Kondratyev | Rowing | 2020 Summer | |
| Lyudmila Kondratyeva | Soviet Union | Athletics | 1980 Summer, 1988 Summer | |
| Nataliya Kondratyeva | Russia | Judo | 2012 Summer | |
| Yekaterina Kondratyeva | Athletics | 2004 Summer | |
| Kata Kondricz | Hungary | Fencing | 2020 Summer | |
| Andrey Kondryshev | Kazakhstan | Cross country skiing | 2006 Winter | |
| Alimata Koné | Ivory Coast | Athletics | 1992 Summer | |
| Boubacar Koné | Mali | Football | 2004 Summer | |
| Carmel Kone [ Wikidata ] | Burkina Faso | Judo | 2024 Summer | |
| Emmanuel Koné | Ivory Coast | Football | 2008 Summer | |
| Gaoussou Koné | Athletics | 1964 Summer, 1968 Summer, 1972 Summer | |
| Ismael Koné | Sweden | Boxing | 1996 Summer | |
| Kinapeya Kone | Ivory Coast | Judo | 2012 Summer | |
| Maboundou Koné | Athletics | 2024 Summer | |
| Mamina Koné | Taekwondo | 2016 Summer | |
| Manu Koné | France | Football | 2024 Summer | |
| Oumar Koné | Mali | Judo | 2012 Summer | |
| Salif Koné | Athletics | 1980 Summer | |
| Jaroslav Konečný | Czechoslovakia | Handball | 1972 Summer | |
| Jaroslav Konečný | Czech Republic | Boxing | 1996 Summer | |
| Jozef Konečný | Czechoslovakia | Artistic gymnastics | 1980 Summer | |
| Lukáš Konečný | Czech Republic | Boxing | 2000 Summer | |
| Martin Konečný | Artistic gymnastics | 2008 Summer, 2012 Summer | |
| Tomáš Konečný | Road cycling | 2000 Summer | |
| Vlastibor Konečný | Czechoslovakia | 1980 Summer | |
| Zdeněk Konečný | Basketball | 1960 Summer | |
| Georg Konermann | West Germany | Rowing | 1984 Summer | |
| Gabriel Konertz | 1976 Summer | |
| Anatoly Konev | Soviet Union | Basketball | 1952 Summer | |
| Yelena Konevtseva | Russia | Athletics | 2004 Summer, 2008 Summer | |
| Kong Fanying | China | Alpine skiing | 2018 Winter, 2022 Winter | |
| Kong Fanyu | Freestyle skiing | 2018 Winter, 2022 Winter | |
| Flora Kong | Hong Kong | Swimming | 2000 Summer | |
| Kong Hee-yong | South Korea | Badminton | 2020 Summer, 2024 Summer | |
| Kong Hyun-ah | Shooting | 1996 Summer | |
| Kong Ja-young | Judo | 2008 Summer | |
| Kong Jeong-bae | Rowing | 1988 Summer | |
| Kong Linghui | China | Table tennis | 1996 Summer, 2000 Summer, 2004 Summer | |
| Kong Meiyu | Speed skating | 1980 Winter, 1984 Winter | |
| Kong Sang-jeong | South Korea | Short track speed skating | 2014 Winter | |
| Vivian Kong | Hong Kong | Fencing | 2016 Summer, 2020 Summer, 2024 Summer | |
| Kong Xiangrui | China | Freestyle skiing | 2018 Winter | |
| Kong Yingchao | Biathlon | 2002 Winter, 2006 Winter, 2010 Winter | |
| Kong Yun-jin | South Korea | Artistic gymnastics | 1996 Summer | |
| Yvette Kong | Hong Kong | Swimming | 2016 Summer | |
| Pauline Konga | Kenya | Athletics | 1992 Summer, 1996 Summer | |
| Bruno-Nazaire Kongaouin | Central African Republic | Basketball | 1988 Summer | |
| Shekie Kongo | Malawi | Boxing | 1972 Summer | |
| Phat Kongrum | Thailand | 1988 Summer | |
| Anne Molin Kongsgård | Norway | Snowboarding | 1998 Winter | |
| Arnholdt Kongsgård | Ski jumping | 1936 Winter | |
| Erling Kongshaug | Shooting | 1952 Summer, 1956 Summer, 1960 Summer | |
| Peder Kongshaug | Speed skating | 2022 Winter | |
| Tine Kongsholm | Denmark | Alpine skiing | 1992 Winter | |
| Halvor Kongsjorden | Norway | Shooting | 1948 Summer | |
| Senee Kongtong | Thailand | Athletics | 2000 Summer | |
| Miroslav Koníček | Czechoslovakia | Rowing | 1960 Summer, 1964 Summer | |
| Alicja Konieczek | Poland | Athletics | 2020 Summer, 2024 Summer | |
| Aneta Konieczek | 2020 Summer, 2024 Summer | |
| Aneta Konieczna | Canoe sprint | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Aleksy Konieczny | Bobsleigh | 1956 Winter | |
| Josh Konieczny | United States | Rowing | 2016 Summer | |
| Zygmunt Konieczny | Poland | Bobsleigh | 1956 Winter | |
| Maryna Konieva | Ukraine | Taekwondo | 2012 Summer | |
| Alexander König | East Germany, Germany | Figure skating | 1988 Winter, 1992 Winter, 1994 Winter | |
| Alfred König | Austria | Athletics | 1936 Summer | |
| Bo König | Sweden | Speed skating | 1992 Winter | |
| Claës König | Equestrian jumping, Equestrian eventing | 1920 Summer, 1924 Summer | |
| Franz König | Austria | Rowing | 1956 Summer | |
| Johann König | Artistic gymnastics | 1960 Summer | |
| Konrad König | Boxing | 1984 Summer | |
| Leo von König | Germany | Art competitions | 1936 Summer | |
| Leopold König | Czech Republic | Road cycling | 2016 Summer | |
| Ove König | Sweden | Speed skating | 1972 Winter | |
| Rita König | Germany | Fencing | 2000 Summer | |
| Rudolf König | Austria | Ice hockey | 1976 Winter, 1984 Winter, 1988 Winter | |
| Rupert König | Boxing | 1960 Summer, 1964 Summer | |
| Susanne König | Germany | Fencing | 2004 Summer | |
| Walter König | Austria | Ice hockey | 1968 Winter | |
| Roland Königshofer | Track cycling | 1988 Summer | |
| Gerhard Königsrainer | Italy | Alpine skiing | 1994 Winter | |
| Salomon Konijn | Netherlands | Artistic gymnastics | 1908 Summer | |
| Selma Konijn [ Wikidata ] | Canoe sprint | 2024 Summer | |
| Aad de Koning | Speed skating | 1948 Winter | |
| Ans Koning | Athletics | 1948 Summer | |
| Arthur Koning | Rowing | 1968 Summer | |
| Carl Koning | Belgium | Field hockey | 1928 Summer | |
| Coen de Koning | Netherlands | Sailing | 2016 Summer | |
| Edzard Koning | Art competitions | 1936 Summer | |
| Elisabeth Koning | Athletics | 1936 Summer | |
| Gerald Koning | Canada | Speed skating | 1964 Winter | |
| Henry Koning | Netherlands | Sailing | 1988 Summer | |
| Josine Koning | Field hockey | 2020 Summer | |
| Marcelien de Koning | Sailing | 2008 Summer, 2012 Summer | |
| Patrick De Koning | Belgium | Archery | 1984 Summer, 1988 Summer | |
| Jean Konings | Athletics | 1908 Summer | |
| Manjola Konini [ Wikidata ] | Albania | Shooting | 2024 Summer | |
| Akane Konishi | Japan | Ice hockey | 2014 Winter, 2018 Winter, 2022 Winter | |
| An Konishi | Table tennis | 2000 Summer | |
| Anna Konishi | Swimming | 2020 Summer | |
| Hiroyuki Konishi | Artistic gymnastics | 1988 Summer | |
| Kenichi Konishi | Field hockey | 1932 Summer | |
| Sachiko Konishi | Athletics | 2008 Summer | |
| Yukari Konishi | Shooting | 2004 Summer, 2012 Summer | |
| Marcin Koniusz | Poland | Fencing | 2008 Summer | |
| Ana Konjuh | Croatia | Tennis | 2016 Summer | |
| Danuta Konkalec | Poland | Rowing | 1976 Summer | |
| Elie Konki | France | Boxing | 2016 Summer | |
| János Konkoly | Hungary | Diving | 1960 Summer | |
| Anatoliy Konkov | Soviet Union | Football | 1976 Summer | |
| Boris Konkov | Equestrian eventing | 1960 Summer, 1964 Summer | |
| Keitaro Konnai | Japan | Swimming | 1996 Summer | |
| Mitsunori Konnai | Weightlifting | 2020 Summer | |
| Alf Konningen | Norway | Alpine skiing | 1936 Winter | |
| Akitsugu Konno | Japan | Ski jumping | 1968 Winter, 1972 Winter | |
| Ford Konno | United States | Swimming | 1952 Summer, 1956 Summer | |
| Hitoshi Konno | Japan | Basketball | 1956 Summer | |
| Mari Konno | 2004 Summer | |
| Yasuyuki Konno | Football | 2004 Summer | |
| Igor Konnov | Soviet Union | Rowing | 1976 Summer | |
| Akira Kono | Japan | Artistic gymnastics | 1956 Summer | |
| Fusako Kōno | Diving | 1936 Summer | |
| Joseph Kono | Cameroon | Road cycling | 1972 Summer, 1976 Summer, 1980 Summer, 1984 Summer | |
| Takanori Kono | Japan | Nordic combined | 1992 Winter, 1994 Winter | |
| Tommy Kono | United States | Weightlifting | 1952 Summer, 1956 Summer, 1960 Summer | |
| Yoshio Kono | Japan | Wrestling | 1932 Summer | |
| Ujitoshi Konomi | Shooting | 1956 Summer | |
| Salomon Könönen | Finland | Athletics | 1948 Summer | |
| Valentin Kononen | 1992 Summer, 1996 Summer, 2000 Summer | |
| Anatoly Kononenko | Soviet Union | Canoe sprint | 1960 Summer | |
| Natalia Kononenko | Ukraine | Artistic gymnastics | 2012 Summer | |
| Roman Kononenko | Track cycling | 2004 Summer | |
| Valeriya Kononenko | Road cycling | 2020 Summer | |
| Halina Konopacka | Poland | Athletics | 1928 Summer | |
| Mark Konopacke | United States | Ski jumping | 1988 Winter | |
| Jiří Konopásek | Czechoslovakia | Basketball | 1972 Summer, 1976 Summer | |
| Stanislav Konopásek | Ice hockey | 1948 Winter | |
| Andrzej Konopka | Poland | Artistic gymnastics | 1960 Summer, 1964 Summer | |
| Mikuláš Konopka | Slovakia | Athletics | 2000 Summer, 2004 Summer | |
| Miloslav Konopka | 2000 Summer, 2004 Summer, 2008 Summer | |
| Bartosz Konopko | Poland | Short track speed skating | 2018 Winter | |
| Klaudia Konopko | Athletics | 2016 Summer | |
| Martina Konopová | Czech Republic | Freestyle skiing | 2010 Winter | |
| Kamila Konotop | Ukraine | Weightlifting | 2020 Summer, 2024 Summer | |
| Aleksey Konov | Soviet Union | Athletics | 1960 Summer | |
| Sergey Konov | Swimming | 1968 Summer | |
| Viktor Konovalenko | Ice hockey | 1964 Winter, 1968 Winter | |
| Oleksandr Konovaliuk | Ukraine | Rowing | 2012 Summer | |
| Anton Konovalov | Russia | Alpine skiing | 2006 Winter | |
| Danylo Konovalov | Ukraine | Diving | 2024 Summer | |
| Ilya Konovalov | Russia | Athletics | 1996 Summer, 2000 Summer, 2004 Summer | |
| Ivan Konovalov | Unified Team | 1992 Summer | |
| Pavel Konovalov | Russia | Canoe sprint | 1996 Summer | |
| Yuriy Konovalov | Soviet Union | Athletics | 1956 Summer, 1960 Summer | |
| Yury Konovalov | Soviet Union, Unified Team, Russia | Sailing | 1988 Summer, 1992 Summer, 1996 Summer | |
| Lyudmila Konovalova | Russia | Basketball | 1996 Summer | |
| Mariya Konovalova | Athletics | 2008 Summer | |
| Ignatas Konovalovas | Lithuania | Track cycling, Road cycling | 2004 Summer, 2008 Summer, 2016 Summer | |
| Karsten Konow | Norway | Sailing | 1936 Summer | |
| Magnus Konow | 1908 Summer, 1912 Summer, 1920 Summer, 1928 Summer, 1936 Summer, 1948 Summer | |
| Branislav Konrád | Slovakia | Ice hockey | 2018 Winter, 2022 Winter | |
| Emma Konrad | Romania | Athletics | 1952 Summer | |
| Ferenc Konrád | Hungary | Water polo | 1968 Summer, 1972 Summer, 1976 Summer | |
| János Konrád | Swimming, Water polo | 1960 Summer, 1964 Summer, 1968 Summer | |
| Patrick Konrad | Austria | Road cycling | 2020 Summer | |
| Sarah Konrad | United States | Biathlon, Cross country skiing | 2006 Winter | |
| Walter Konrad | Germany | Athletics | 1956 Summer | |
| Wolfgang Konrad | Austria | 1980 Summer | |
| Ilsa Konrads | Australia | Swimming | 1960 Summer | |
| John Konrads | 1960 Summer, 1964 Summer | |
| Eydis Konráðsdóttir | Iceland | 1996 Summer, 2000 Summer | |
| Gottlieb Konráðsson | Cross country skiing | 1984 Winter | |
| Ulrich Kons | East Germany | Rowing | 1980 Summer | |
| Paul Konsler | France | Shooting | 1952 Summer | |
| Gunnar Konsmo | Norway | Speed skating | 1948 Winter | |
| Eleftherios Konsolas | Greece | Rowing | 2012 Summer | |
| Maria Konstantatou | Diving | 2000 Summer | |
| Aristidis Konstantinidis | Road cycling, Track cycling | 1896 Summer | |
| Dimitrios Konstantinidis | Athletics | 1956 Summer | |
| Iordanis Konstantinidis | Wrestling | 1992 Summer, 1996 Summer | |
| Kyriaki Konstantinidou | Track cycling | 2004 Summer | |
| Dimitris Konstantinou | Cyprus | Shooting | 2020 Summer | |
| Konstantinos Konstantinou | Greece | Road cycling, Track cycling | 1896 Summer | |
| Konstantinos Konstantinou | Cyprus | Judo | 1980 Summer | |
| Andrey Konstantinov | Bulgaria | Water polo | 1972 Summer | |
| Georgi Konstantinov | Volleyball | 1964 Summer | |
| Ilya Konstantinov | Russia | Water polo | 1996 Summer | |
| Plamen Konstantinov | Bulgaria | Volleyball | 1996 Summer, 2008 Summer | |
| Radoslav Konstantinov | Track cycling | 2004 Summer | |
| Roman Konstantinov | Russia | Weightlifting | 2008 Summer | |
| Vasil Konstantinov | Bulgaria | Artistic gymnastics | 1952 Summer | |
| Vitaly Konstantinov | Soviet Union | Wrestling | 1972 Summer, 1976 Summer | |
| Ekaterina Konstantinova | Russian Olympic Committee | Short track speed skating | 2018 Winter | |
| Irina Konstantinova | Bulgaria | Sailing | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Tatyana Konstantinova | Russia | Athletics | 2000 Summer | |
| Svitlana Konstantynova | Ukraine | Speed skating | 1998 Winter | |
| Dimitrios Konstas | Greece | Water polo | 1972 Summer | |
| Johanna Konta | Great Britain | Tennis | 2016 Summer | |
| Alexandr Kontarev | Soviet Union | Athletics | 1964 Summer | |
| Anett Kontaveit | Estonia | Tennis | 2020 Summer | |
| Lucien Konter | Luxembourg | Football | 1948 Summer | |
| Pavlos Kontides | Cyprus | Sailing | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Veini Kontinen | Finland | Cross country skiing | 1956 Winter | |
| Petri Kontiola | Ice hockey | 2014 Winter, 2018 Winter | |
| Adolf Konto | Sailing | 1948 Summer, 1952 Summer | |
| Aikaterini Kontochristopoulou | Greece | Fencing | 2016 Summer | |
| Zoi Kontogianni | Rhythmic gymnastics | 2016 Summer | |
| Georgios Kontogiannis | Shooting | 1936 Summer | |
| Georgios Kontogouris | Sailing | 2004 Summer | |
| Kostas Kontomanolis | Rowing | 1980 Summer, 1984 Summer | |
| Chris Kontos | Canada | Ice hockey | 1994 Winter | |
| Spyridon Kontosoros | Greece | Athletics | 1972 Summer | |
| Dimitra Kontou | Rowing | 2024 Summer | |
| Zsolt Kontra | Hungary | Handball | 1976 Summer, 1980 Summer | |
| Roman Kontšek | Slovakia | Ice hockey | 1994 Winter, 1998 Winter | |
| Linda Konttorp | Norway | Sailing | 1996 Summer | |
| Pentti Kontula | Finland | Boxing | 1952 Summer | |
| Sofia Konukh | Russia | Water polo | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| František Konvička | Czechoslovakia | Basketball | 1960 Summer | |
| Pavel Konvička | Rowing | 1972 Summer, 1976 Summer, 1980 Summer | |
| Canel Konvur | Turkey | Athletics | 1960 Summer | |
| Marek Konwa | Poland | Cycling mountain bike | 2012 Summer | |
| Richard Konwiarz | Germany | Art competitions | 1928 Summer, 1932 Summer | |
| Ádám Kónya | Hungary | Cross country skiing | 2018 Winter, 2022 Winter | |
| Zsófia Kónya | Short track speed skating | 2014 Winter, 2018 Winter, 2022 Winter | |
| Vladimir Konyakhin | Soviet Union | Shooting | 1968 Summer | |
| Nadezhda Konyayeva | Athletics | 1956 Summer | |
| Anthony Konyegwachie | Nigeria | Boxing | 1988 Summer | |
| Peter Konyegwachie | 1984 Summer | |
| Ștefan Konyelicska | Romania | Rowing | 1952 Summer | |
| Sándor Kónyi | Hungary | Wrestling | 1924 Summer | |
| Tina Konyot | United States | Equestrian dressage | 2012 Summer | |
| Dimitri Konyshev | Russia | Road cycling | 1996 Summer, 2000 Summer | |
| Olga Konysheva | Kazakhstan | Ice hockey | 2002 Winter | |
| Elena Könz | Switzerland | Snowboarding | 2014 Winter, 2018 Winter | |
| Mario Konzett | Liechtenstein | Alpine skiing | 1984 Winter | |
| Ursula Konzett | 1976 Winter, 1980 Winter, 1984 Winter | |
| Klaus Konzorr | Germany, West Germany | Diving | 1964 Summer, 1968 Summer, 1972 Summer | |
| Dae-sung Koo | South Korea | Baseball | 2000 Summer | |
| Koo Ja-cheol | Football | 2012 Summer | |
| Koo Ja-chung | Archery | 1984 Summer | |
| Koo Kien Keat | Malaysia | Badminton | 2008 Summer, 2012 Summer | |
| Koo Ki-lan | South Korea | Volleyball | 2000 Summer | |
| Evelien Koogje | Netherlands | Rowing | 1976 Summer | |
| Sami Kooheji | Bahrain | Sailing | 2004 Summer | |
| Gholam Hossein Koohi | Iran | Road cycling, Track cycling | 1972 Summer, 1976 Summer | |
| Karen van der Kooij | Netherlands | Athletics | 1992 Summer | |
| Hendrik Jan Kooijman | Field hockey | 1988 Summer, 1992 Summer | |
| Joost Kooistra | Volleyball | 2000 Summer | |
| Sam Kooistra | United States | Water polo | 1956 Summer | |
| William Kooistra | 1952 Summer, 1956 Summer | |
| Kook In-sook | South Korea | Rowing | 1988 Summer | |
| Jang Kookhee [ Wikidata ] | Shooting | 2024 Summer | |
| Jaap Kool [ Wikidata ] | Netherlands | Art competitions | 1924 Summer | |
| Jurjaan Koolen | Volleyball | 1964 Summer | |
| Nicole Koolen | Field hockey | 1996 Summer | |
| Roel Koolen | Baseball | 2008 Summer | |
| Sanne Koolen | Field hockey | 2020 Summer, 2024 Summer | |
| Ilse Koolhaas | Water polo | 2020 Summer | |
| Wesley Koolhof | Tennis | 2020 Summer, 2024 Summer | |
| Anton Koolmann | Estonia | Wrestling | 1924 Summer | |
| Koon Wai Chee | Hong Kong | Badminton | 2000 Summer, 2004 Summer | |
| Andrew Kooner | Canada | Boxing | 2000 Summer, 2004 Summer | |
| Athiaporn Koonjarthong | Thailand | Athletics | 1992 Summer | |
| Benjamin Koons | New Zealand | Cross country skiing | 2010 Winter | |
| Scott Koons | United States | Short track speed skating | 1998 Winter | |
| Grant Koontz | Track cycling | 2024 Summer | |
| Hilde Koop | Germany | Artistic gymnastics | 1952 Summer | |
| Vanessa van Kooperen | Field hockey | 1996 Summer | |
| Frederik Koopman | Netherlands | Rowing | 1920 Summer | |
| John Koopman | United States | Art competitions | 1932 Summer | |
| Leo Koopmans | Netherlands | Ice hockey | 1980 Winter | |
| Tini Koopmans | Athletics | 1936 Summer | |
| Evert Koops | 1908 Summer | |
| Roelof Koops | Speed skating | 1936 Winter | |
| Raf Kooremans | Equestrian eventing | 2024 Summer | |
| Torin Koos | United States | Cross country skiing | 2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter | |
| Simone Koot | Netherlands | Water polo | 2008 Summer | |
| Veli Koota | Finland | Boxing | 1980 Summer | |
| Janna van Kooten [ Wikidata ] | Netherlands | Swimming | 2024 Summer | |
| August Kop | Field hockey | 1928 Summer | |
| Jacob van der Kop | Shooting | 1908 Summer | |
| Petr Kop | Czechoslovakia | Volleyball | 1964 Summer, 1968 Summer | |
| Jiří Kopáč | Czech Republic | Rowing | 2012 Summer, 2016 Summer | |
| Mojca Kopač | Slovenia | Figure skating | 1992 Winter, 1998 Winter, 2002 Winter | |
| Primož Kopač | Ski jumping | 1992 Winter | |
| Alexander Kopacz | Canada | Bobsleigh | 2018 Winter | |
| Tibor Kopacz | Romania | Speed skating | 1984 Winter | |
| Miroslav Kopal | Czechoslovakia, Czech Republic | Nordic combined | 1988 Winter, 1994 Winter | |
| Jerzy Kopański | Poland | Wrestling | 1988 Summer | |
| Karolj Kopas | Yugoslavia | 1984 Summer | |
| Bálint Kopasz | Hungary | Canoe sprint | 2016 Summer, 2020 Summer, 2024 Summer | |
| Vladimir Kopat | Belarus | Ice hockey | 2002 Winter | |
| Marina Kopcalic [ Wikidata ] | Australia | Handball | 2000 Summer | |
| Svitlana Kopchykova | Soviet Union | Swimming | 1988 Summer | |
| Dominika Kopcik | Canada | Artistic swimming | 2008 Summer | |
| Wolfgang Köpcke | West Germany | Modern pentathlon | 1976 Summer | |
| Adam Kopczyński | Poland | Ice hockey | 1972 Winter | |
| Laurelee Kopeck | Canada | Field hockey | 1992 Summer | |
| Josef Kopecký | Czechoslovakia | Shooting | 1936 Summer | |
| Julia Kopecký | Czech Republic | Road cycling | 2024 Summer | |
| Lotte Kopecky | Belgium | Road cycling, Track cycling | 2016 Summer, 2020 Summer, 2024 Summer | |
| Tomáš Kopecký | Slovakia | Ice hockey | 2010 Winter, 2014 Winter | |
| Sergey Kopenkin | Kyrgyzstan | Boxing | 1996 Summer | |
| Jaroslav Kopet | Czechoslovakia | Volleyball | 1980 Summer | |
| Valeriy Kapaev | Soviet Union | Nordic combined | 1976 Winter | |
| Ernst Köpf | Germany, West Germany | Ice hockey | 1964 Winter, 1968 Winter, 1976 Winter | |
| Ernst Köpf | Germany | 1992 Winter | |
| Jakub Kopf | Poland | Basketball | 1936 Summer | |
| Dominik Koepfer | Germany | Tennis | 2020 Summer, 2024 Summer | |
| Hubert Köpfler | Switzerland | Figure skating | 1960 Winter | |
| Yigal Kopinsky | Suriname | Judo | 2016 Summer | |
| Anže Kopitar | Slovenia | Ice hockey | 2014 Winter | |
| Rok Kopitar | Yugoslavia | Athletics | 1980 Summer, 1988 Summer | |
| Lasse Kopitz | Germany | Ice hockey | 2006 Winter | |
| Raymond Kopka | Great Britain | Weightlifting | 1992 Summer | |
| Christiane Köpke | East Germany | Rowing | 1976 Summer, 1980 Summer | |
| Fritz Köpke | Germany | Athletics | 1928 Summer | |
| Marko Kopljar | Croatia | Handball | 2012 Summer, 2016 Summer | |
| Mike Koplove | United States | Baseball | 2008 Summer | |
| Sergey Koplyakov | Soviet Union | Swimming | 1976 Summer, 1980 Summer | |
| Charles Werner Kopp | Switzerland | Swimming, Water polo | 1924 Summer, 1936 Summer | |
| Karel Kopp | Czechoslovakia | Art competitions | 1932 Summer | |
| Klaus Kopp | West Germany | Bobsleigh | 1984 Winter | |
| Kyle Kopp | United States | Water polo | 1996 Summer, 2000 Summer | |
| Leo Köpp | Germany | Athletics | 2020 Summer, 2024 Summer | |
| Pavol Kopp | Slovakia | Shooting | 2008 Summer, 2012 Summer, 2016 Summer | |
| Rudi Kopp | Germany | Cross country skiing | 1952 Winter, 1956 Winter | |
| Olavi Köppä | Finland | Speed skating | 1976 Winter | |
| Pál Koppán | Hungary | Athletics | 1900 Summer | |
| Jo Alexander Koppang | Norway | Luge | 2014 Winter | |
| Nils Koppang | Fencing | 1976 Summer, 1984 Summer | |
| Nina Koppang | Sweden | Handball | 2024 Summer | |
| János Koppány | Hungary | 1936 Summer | |
| Erwin Koppe | Germany | Artistic gymnastics | 1960 Summer, 1964 Summer | |
| Hans-Peter Koppe | East Germany | Rowing | 1980 Summer | |
| Nora Köppel | Argentina | Weightlifting | 2000 Summer, 2004 Summer | |
| Ronald Koppelent | Austria | Figure skating | 1976 Winter | |
| Helen Koppell | Great Britain | Diving | 1972 Summer, 1976 Summer | |
| Helmut Koppelstätter | Austria | Swimming | 1952 Summer | |
| Fritz Köppen | Germany | Athletics | 1960 Summer | |
| Jens Köppen | East Germany, Germany | Rowing | 1988 Summer, 1992 Summer | |
| Kerstin Köppen | Germany | 1992 Summer, 1996 Summer | |
| Rudi Köppen | Athletics | 1964 Summer | |
| Sandra Köppen | Judo | 2000 Summer, 2004 Summer, 2008 Summer | |
| Theo Koppen [ Wikidata ] | United States | Wrestling | 1904 Summer | |
| Wolfram Koppen | West Germany | Judo | 1972 Summer | |
| Eduardo Kopper | Costa Rica | Alpine skiing | 1984 Winter | |
| Ruy Kopper | Brazil | Rowing | 1956 Summer | |
| Fritz Kopperschmidt | Germany, West Germany | Sailing | 1964 Summer, 1968 Summer | |
| Harukiirario Koppu | Japan | Water polo | 2020 Summer | |
| Spas Koprinkov | Bulgaria | Shooting | 1992 Summer | |
| David Kopřiva | Czech Republic | Rowing | 2004 Summer | |
| František Kopřiva | Bohemia, Czechoslovakia | Wrestling | 1912 Summer, 1920 Summer | |
| Jaroslav Kopřiva | Czech Republic | Bobsleigh | 2018 Winter | |
| Anton Koprivitsa | Russia | Snowboarding | 2014 Winter | |
| Peter Koprivnikar | Slovenia | Archery | 1996 Summer, 2000 Summer | |
| Malwina Kopron | Poland | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Franciszek Koprowski | Modern pentathlon | 1928 Summer | |
| Ebbe Kops | Denmark | Boxing | 1952 Summer | |
| Hailey Kops | Israel | Figure skating | 2022 Winter | |
| Poul Kops | Denmark | Boxing | 1936 Summer | |
| Joseph Kopsky | United States | Road cycling | 1912 Summer | |
| Evgeny Koptelov | Russia | Swimming | 2016 Summer | |
| Dmitry Koptur | Belarus | 2000 Summer | |
| Sergei Kopylov | Soviet Union | Track cycling | 1980 Summer | |
| Nikita Kopyrenko | Kazakhstan | Luge | 2018 Winter | |
| Jan Kopyto | Poland | Athletics | 1956 Summer | |
| Sergey Kopytov | Kazakhstan | Weightlifting | 1996 Summer | |
| Vladimir Kopytov | Belarus | Wrestling | 1996 Summer, 2000 Summer | |
| Salomé Kora | Switzerland | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Jamie Korab | Canada | Curling | 2006 Winter | |
| Nataliya Korabelnikova | Kyrgyzstan | Swimming | 2000 Summer | |
| Radivoj Korać | Yugoslavia | Basketball | 1960 Summer, 1964 Summer, 1968 Summer | |
| Anna Korakaki | Greece | Shooting | 2016 Summer, 2020 Summer, 2024 Summer | |
| Miroslav Koranda | Czechoslovakia | Rowing | 1952 Summer, 1956 Summer | |
| Hisham Moustafa Korany | Egypt | Field hockey | 1992 Summer | |
| Balázs Korányi | Hungary | Athletics | 1996 Summer, 2000 Summer | |
| Ibrahim Korayiem [ Wikidata ] | Egypt | Shooting | 2024 Summer | |
| Nalek Korbaj | Venezuela | Boxing | 2020 Summer | |
| Gennady Korban | Soviet Union | Wrestling | 1980 Summer | |
| Roman Korban | Poland | Athletics | 1952 Summer | |
| Jana Korbasová | Slovakia | Swimming | 2000 Summer | |
| Erich Korbel | Austria | Speed skating | 1964 Winter, 1968 Winter | |
| Károly Korbel | Hungary | Judo | 1992 Summer | |
| Petr Korbel | Czechoslovakia, Czech Republic | Table tennis | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Jaroslav Korbela | Czechoslovakia | Ice hockey | 1984 Winter | |
| Anatoly Korbut | Unified Team | Rowing | 1992 Summer | |
| Olga Korbut | Soviet Union | Artistic gymnastics | 1972 Summer, 1976 Summer | |
| Agata Korc | Poland | Swimming | 2008 Summer | |
| Oleksandr Korchmid | Ukraine | Athletics | 2004 Summer, 2008 Summer | |
| Anton Korchuk | Ski jumping | 2022 Winter | |
| Peter Korčok | Slovakia | Athletics | 2000 Summer, 2004 Summer, 2008 Summer | |
| Aleksander Korcz | Poland | Field hockey | 2000 Summer | |
| Grzegorz Korcz | Basketball | 1968 Summer, 1972 Summer | |
| Waldemar Korcz | Weightlifting | 1972 Summer | |
| Daria Korczyńska | Athletics | 2008 Summer, 2012 Summer | |
| Houssam El Kord | Morocco | Fencing | 2020 Summer, 2024 Summer | |
| Jessica Korda | United States | Golf | 2020 Summer | |
| Nelly Korda | 2020 Summer, 2024 Summer | |
| Danuta Kordaczuk | Poland | Volleyball | 1964 Summer | |
| Sebastian Kördel [ Wikidata ] | Germany | Sailing | 2024 Summer | |
| Angela Kordež | Yugoslavia | Cross country skiing | 1952 Winter | |
| Matevž Kordež | 1948 Winter, 1956 Winter | |
| Milena Kordež | 1976 Winter | |
| Toni Kordic | Canada | Basketball | 1984 Summer | |
| Ashraf El-Kordy | Egypt | 1988 Summer | |
| Khaled El-Kordy | Handball | 1992 Summer | |
| Jan Korejs | Czechoslovakia | Athletics | 1936 Summer | |
| Dusty Korek | Canada | Ski jumping | 2014 Winter | |
| Alexandra Korelova | Russia | Equestrian dressage | 2004 Summer, 2008 Summer | |
| Günter Koren | Austria | Ice hockey | 1988 Winter | |
| Helmut Koren | 1984 Winter | |
| Katja Koren | Slovenia | Alpine skiing | 1994 Winter | |
| Eric Koreng | Germany | Beach volleyball | 2008 Summer | |
| Sergey Korepanov | Kazakhstan | Athletics | 1996 Summer, 2000 Summer, 2004 Summer | |
| Alexander Koreshkov | Ice hockey | 1998 Winter, 2006 Winter | |
| Yevgeni Koreshkov | 1998 Winter, 2006 Winter | |
| Boris Koretsky | Soviet Union | Fencing | 1988 Summer | |
| Victor Koretzky | France | Cycling mountain bike | 2016 Summer, 2020 Summer, 2024 Summer | |
| Jan Jaap Korevaar | Netherlands | Water polo | 1980 Summer | |
| Nijs Korevaar | 1948 Summer, 1952 Summer | |
| Myriam Korfanty | France | Handball | 2000 Summer, 2004 Summer | |
| Werner Korff | Germany | Ice hockey | 1932 Winter | |
| Maximilian Korge | Rowing | 2016 Summer | |
| Yrjö Korholin-Koski | Finland | Athletics | 1928 Summer | |
| Laurel Korholz | United States | Rowing | 1996 Summer, 2000 Summer, 2004 Summer | |
| Jorma Korhonen | Finland | Judo | 1992 Summer | |
| Jorma Korhonen | Shooting | 1992 Summer | |
| Marko Korhonen | Judo | 1992 Summer | |
| Paavo Korhonen | Cross country skiing, Nordic combined | 1952 Winter, 1956 Winter, 1960 Winter | |
| Riku Korhonen | Artistic gymnastics | 1908 Summer | |
| Urho Korhonen | 1928 Summer | |
| Urpo Korhonen | Cross country skiing | 1952 Winter | |
| Wäinö Korhonen | Fencing, Modern pentathlon | 1956 Summer | |
| Dane Korica | Yugoslavia | Athletics | 1972 Summer | |
| Nikola Korica | Bobsleigh | 1984 Winter | |
| Avtandil Koridze | Soviet Union | Wrestling | 1960 Summer | |
| Andrey Korikov | Rowing | 1988 Summer | |
| Radim Kořínek | Czech Republic | Road cycling, Cycling mountain bike | 2000 Summer, 2004 Summer | |
| Ivana Kořinková | Czechoslovakia | Basketball | 1976 Summer | |
| Emmanuel Korir | Kenya | Athletics | 2020 Summer | |
| Isaac Korir | Bahrain | 2016 Summer | |
| John Cheruiyot Korir | Kenya | 2000 Summer, 2004 Summer | |
| Julius Korir | 1984 Summer | |
| Leonard Korir | United States | 2016 Summer, 2024 Summer | |
| Wesley Korir | Kenya | 2016 Summer | |
| Ján Koristek | Slovakia | Cross country skiing | 2022 Winter | |
| Angel Koritarov | Bulgaria | Volleyball | 1964 Summer, 1968 Summer | |
| Dina Koritskaya | Russia | Athletics | 2000 Summer | |
| Haroun Korjie | Sierra Leone | 1996 Summer | |
| Tapio Korjus | Finland | 1988 Summer | |
| Ada Korkhin | United States | Shooting | 2024 Summer | |
| Otar Korkia | Soviet Union | Basketball | 1952 Summer | |
| Mikheil Korkia | 1972 Summer, 1976 Summer | |
| Prodromos Korkizoglou | Greece | Athletics | 2000 Summer, 2004 Summer | |
| Inessa Korkmaz | Russia | Volleyball | 2000 Summer | |
| Salih Korkmaz | Turkey | Athletics | 2020 Summer, 2024 Summer | |
| Elmar Korko | Estonia | Rowing | 1936 Summer | |
| Adrianus van Korlaar | Netherlands | Shooting | 1924 Summer | |
| Leonidas Kormalis | Greece | Athletics | 1960 Summer | |
| Jiří Kormaník | Czechoslovakia | Wrestling | 1960 Summer, 1964 Summer, 1968 Summer | |
| Peter Kormann | United States | Artistic gymnastics | 1976 Summer | |
| Csaba Körmöczi | Hungary | Fencing | 1976 Summer | |
| András Kormos | Rowing | 1972 Summer, 1980 Summer | |
| Gyula Kormos | Field hockey | 1936 Summer | |
| Villő Kormos | Diving | 2004 Summer, 2008 Summer, 2016 Summer | |
| Irina Kormysheva | Kazakhstan | Freestyle skiing | 1998 Winter | |
| Alison Korn | Canada | Rowing | 1996 Summer, 2000 Summer | |
| Leif Korn | Sweden | Artistic gymnastics | 1960 Summer, 1964 Summer | |
| Oliver Korn | Germany | Field hockey | 2008 Summer, 2012 Summer | |
| Marthin Kornbakk | Sweden | Wrestling | 1992 Summer | |
| Torbjörn Kornbakk | 1992 Summer, 1996 Summer | |
| Nike Kornecki | Israel | Sailing | 2004 Summer, 2008 Summer | |
| Aleksandr Korneev | Russia | Volleyball | 2008 Summer | |
| Lev Korneev | Serbia | Taekwondo | 2024 Summer | |
| Yuri Korneev | Soviet Union | Basketball | 1960 Summer, 1964 Summer | |
| Maria Kornek | Poland | Field hockey | 1980 Summer | |
| Alina Kornelli | Austria | Sailing | 2024 Summer | |
| Aleksandr Kornelyuk | Soviet Union | Athletics | 1972 Summer | |
| Alfred Körner | Austria | Football | 1948 Summer | |
| Christoph Körner | West Germany | Basketball | 1984 Summer | |
| Gerhard Körner | Germany | Football | 1964 Summer | |
| Hildegard Körner | East Germany | Athletics | 1980 Summer | |
| Julius Körner | Germany | Rowing | 1900 Summer | |
| Kurt Körner | Ski jumping | 1936 Winter | |
| Martin Körner | Nordic combined | 1960 Winter | |
| Rudolf Körner | Artistic gymnastics | 1912 Summer | |
| Valentin Kornev | Soviet Union | Shooting | 1968 Summer, 1972 Summer | |
| Andrey Korneyev | Russia | Swimming | 1996 Summer | |
| Konstantin Korneyev | Ice hockey | 2010 Winter | |
| Tyler Kornfield | United States | Cross country skiing | 2018 Winter | |
| Helmut Körnig | Germany | Athletics | 1928 Summer, 1932 Summer | |
| Sergey Kornilaev | Soviet Union | Wrestling | 1980 Summer | |
| Sergei Kornilenko | Belarus | Football | 2012 Summer | |
| Aleksandr Kornilov | Russia | Rowing | 2008 Summer | |
| Denis Kornilov | Russia, Russian Olympic Committee | Ski jumping | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Sergey Kornilov | Russia | Speed skating | 2006 Winter | |
| Alfred Kornprobst | Germany | Weightlifting | 1964 Summer | |
| Anna Kornuta | Ukraine | Athletics | 2016 Summer | |
| Ihor Korobchynskyi | Unified Team, Ukraine | Artistic gymnastics | 1992 Summer, 1996 Summer | |
| Oleksiy Korobeinikov | Ukraine | Biathlon | 2006 Winter | |
| Larisa Korobeynikova | Russia, Russian Olympic Committee | Fencing | 2012 Summer, 2020 Summer | |
| Mariya Korobitskaya | Kyrgyzstan | Athletics | 2016 Summer | |
| Olha Korobka | Ukraine | Weightlifting | 2004 Summer, 2008 Summer | |
| Aleksandr Korobov | Kazakhstan | Ski jumping | 2002 Winter | |
| Matt Korobov | Russia | Boxing | 2008 Summer | |
| Daria Korobova | Artistic swimming | 2012 Summer | |
| Lyudmila Korobova | Soviet Union | Swimming | 1960 Summer | |
| Ibolya Korodi | Romania | Athletics | 1980 Summer | |
| Shinzō Kōroki | Japan | Football | 2016 Summer | |
| Máté Koroknai | Hungary | Athletics | 2020 Summer | |
| Adam Korol | Poland | Rowing | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Petro Korol | Soviet Union | Weightlifting | 1976 Summer | |
| Yelizaveta Korol | Kazakhstan | Shooting | 2016 Summer | |
| Alexey Korolev | Ski jumping | 2006 Winter, 2010 Winter | |
| Irina Koroleva | Russia, Russian Olympic Committee | Volleyball | 2016 Summer, 2020 Summer | |
| Maria Koroleva | Russia | Water polo | 2000 Summer | |
| Mariya Koroleva | United States | Artistic swimming | 2012 Summer, 2016 Summer | |
| Olga Koroleva | Russia | Freestyle skiing | 2002 Winter, 2006 Winter | |
| Svetlana Koroleva | Kazakhstan | Water polo | 2000 Summer, 2004 Summer | |
| Lyudmila Korolik | Belarus | Cross country skiing | 1998 Winter, 2006 Winter | |
| Józef Korolkiewicz | Poland | Art competitions | 1932 Summer | |
| Nikolai Korolkov | Soviet Union | Equestrian jumping | 1980 Summer | |
| Yevgeny Korolkov | Artistic gymnastics | 1952 Summer | |
| Pavel Korolyov | Kazakhstan | Cross country skiing | 1994 Winter | |
| Anastasiya Korolyova | Uzbekistan | Swimming | 2000 Summer | |
| Yelena Korolyova | Unified Team, Russia | Freestyle skiing | 1992 Winter, 1994 Winter, 1998 Winter | |
| Alexander Korolyuk | Russia | Ice hockey | 2006 Winter | |
| Mariama Koroma [ Wikidata ] | Sierra Leone | Judo | 2024 Summer | |
| Margit Korondi | Hungary | Artistic gymnastics | 1952 Summer, 1956 Summer | |
| Shem Kororia | Kenya | Athletics | 1996 Summer | |
| Pavel Korostelyov | Russia | Cross country skiing | 2006 Winter | |
| Natalya Korostelyova | 2010 Winter | |
| Pavlo Korostylov | Ukraine | Shooting | 2016 Summer, 2020 Summer, 2024 Summer | |
| Yuliya Korostylova | 2004 Summer | |
| Olga Korotayeva | Kyrgyzstan | Swimming | 1996 Summer | |
| Mariya Koroteyeva | Russia | Athletics | 2004 Summer | |
| Larisa Korotkevich | Unified Team, Russia | 1992 Summer, 2000 Summer | |
| Sergey Korotkikh | Unified Team | Rowing | 1992 Summer | |
| Edyta Korotkin | Poland | Archery | 1992 Summer | |
| Egor Korotkov | Russia, Russian Olympic Committee | Freestyle skiing | 2010 Winter, 2014 Winter, 2018 Winter | |
| Ilya Korotkov | Russia | Athletics | 2008 Summer, 2012 Summer | |
| Konstantin Korotkov | Soviet Union | Speed skating | 1984 Winter | |
| Volodymyr Korotkov | Unified Team, Ukraine | Sailing | 1992 Summer, 1996 Summer, 2000 Summer | |
| Maksym Korotun | Ukraine | Judo | 2008 Summer | |
| Yevgeny Korotyshkin | Russia | Swimming | 2004 Summer, 2008 Summer, 2012 Summer | |
| Alexey Korovashkov | Russia, Independent Olympians | Canoe sprint | 2012 Summer, 2024 Summer | |
| Yuri Koroviansky | Unified Team | Volleyball | 1992 Summer | |
| Janina Korowicka | Poland | Speed skating | 1976 Winter | |
| Pavel Korpachev | Russia | Freestyle skiing | 2014 Winter | |
| Bálint Korpási | Hungary | Wrestling | 2020 Summer | |
| Tamara Korpatsch | Germany | Tennis | 2024 Summer | |
| Jorma Korpela | Finland | Modern pentathlon | 1984 Summer | |
| Merja Korpela | Athletics | 2008 Summer | |
| Leen Korpershoek | Netherlands | Swimming | 1928 Summer | |
| Janne Korpi | Finland | Snowboarding | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Kiira Korpi | Figure skating | 2006 Winter, 2010 Winter | |
| Lauri Korpikoski | Ice hockey | 2014 Winter | |
| Michael Korrel | Netherlands | Judo | 2020 Summer, 2024 Summer | |
| Przemysław Korsak | Poland | Canoe sprint | 2024 Summer | |
| Vera Korsakova | Soviet Union | Athletics | 1968 Summer | |
| Gennadiy Korshikov | Rowing | 1972 Summer, 1976 Summer | |
| Anna Korshikova | Kyrgyzstan | Swimming | 2000 Summer | |
| Mikhail Korshuk | Belarus | Badminton | 1996 Summer | |
| Andrei Korshunov | Russia | Equestrian eventing | 2012 Summer | |
| Ekaterina Korshunova | Shooting | 2016 Summer | |
| Tatiana Korshunova | Soviet Union | Canoe sprint | 1976 Summer | |
| Mirko Koršič | Yugoslavia | Fencing | 1936 Summer | |
| Jaap Korsloot | Netherlands | Volleyball | 1964 Summer | |
| Lisbeth Korsmo | Norway | Speed skating | 1968 Winter, 1972 Winter, 1976 Winter, 1980 Winter | |
| Nyls Korstanje | Netherlands | Swimming | 2020 Summer, 2024 Summer | |
| Ko Korsten | 1920 Summer | |
| Ilona Korstin | Russia | Basketball | 2004 Summer, 2008 Summer, 2012 Summer | |
| Olha Korsun | Ukraine | Athletics | 2024 Summer | |
| Veronika Korsunova | Russia | Freestyle skiing | 2014 Winter | |
| Gérard de Kort | Netherlands | Swimming | 1984 Summer | |
| Alain Kortabitarte [ Wikidata ] | Spain | Skateboarding | 2024 Summer | |
| Vincent Kortbeek | Netherlands | Bobsleigh | 2006 Winter | |
| Annimari Korte | Finland | Athletics | 2020 Summer | |
| Christoph Korte | West Germany | Rowing | 1988 Summer | |
| Joke de Korte | Netherlands | Swimming | 1952 Summer | |
| Sven Korte [ Wikidata ] | Germany | Shooting | 2024 Summer | |
| Jorma Kortelainen | Finland | Cross country skiing, Rowing | 1956 Winter, 1960 Summer | |
| Jouni Kortelainen | Athletics | 1980 Summer | |
| Jeannette Korten | Australia | Alpine skiing | 2002 Winter | |
| Jaap ten Kortenaar | Netherlands | Road cycling | 1992 Summer | |
| Marnix ten Kortenaar | Austria | Speed skating | 1998 Winter | |
| Gerrit Korteweg | Netherlands | Swimming | 1960 Summer | |
| Dirk Korthals | West Germany | 1984 Summer | |
| Marlene Korthals | Austria | Luge | 1968 Winter | |
| Carl Körting [ Wikidata ] | Germany | Artistic gymnastics | 1908 Summer | |
| François Kortleven | Netherlands | Shooting | 1924 Summer | |
| Şevki Koru | Turkey | Athletics | 1948 Summer | |
| Václav Korunka | Czechoslovakia, Czech Republic | Cross country skiing | 1988 Winter, 1992 Winter, 1994 Winter | |
| Poul Korup | Denmark | Rowing | 1948 Summer | |
| Bok de Korver | Netherlands | Football | 1908 Summer, 1912 Summer | |
| Kees de Korver | Rowing | 1972 Summer | |
| Simon Korver | Sailing | 1972 Summer | |
| Heinz Körvers | Germany | Handball | 1936 Summer | |
| Vitaly Koryakin | Tajikistan | Wrestling | 2008 Summer | |
| Sergey Koryazhkin | Soviet Union | Fencing | 1988 Summer | |
| Jerzy Koryciak | Poland | Cross country skiing | 1976 Winter | |
| Małgorzata Korycka | Equestrian eventing | 2024 Summer | |
| Svetlana Korytova | Soviet Union, Unified Team | Volleyball | 1988 Summer, 1992 Summer | |
| Mariya Koryttseva | Ukraine | Tennis | 2008 Summer | |
| Edyta Koryzna | Poland | Basketball | 2000 Summer | |
| Sylwia Korzeniowska | Athletics | 2004 Summer, 2008 Summer | |
| Paweł Korzeniowski | Swimming | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Robert Korzeniowski | Athletics | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Tatsiana Korzh | Belarus | 2016 Summer | |
| Veronika Korzhakova | Russian Olympic Committee | Ice hockey | 2022 Winter | |
| Irina Korzhanenko | Russia | Athletics | 1996 Summer, 2004 Summer | |
| Lee Korzits | Israel | Sailing | 2004 Summer, 2012 Summer | |
| Hubert Kós | Hungary | Swimming | 2020 Summer, 2024 Summer | |
| Joke Kos | Netherlands | Artistic gymnastics | 1976 Summer | |
| Josef Kos | Czechoslovakia | 1924 Summer | |
| Lovro Kos | Slovenia | Ski jumping | 2022 Winter | |
| Maja Kos | Independent Olympians | Artistic swimming | 1992 Summer | |
| Tomáš Kos | Czechoslovakia, Czech Republic | Biathlon | 1988 Winter, 1992 Winter, 1994 Winter | |
| Wim Kos | Netherlands | Speed skating | 1928 Winter | |
| Zdeněk Kos | Czechoslovakia | Basketball | 1972 Summer, 1976 Summer, 1980 Summer | |
| Hiroko Kosahara | Japan | Handball | 1976 Summer | |
| Noriko Kosai | Shooting | 1984 Summer, 1992 Summer | |
| Katsundo Kosaka | Art competitions | 1932 Summer | |
| Lyanne Kosaka | Brazil | Table tennis | 1992 Summer, 1996 Summer | |
| Tadahiro Kosaka | Japan | Athletics | 1988 Summer, 1992 Summer, 1996 Summer | |
| Ömer Besim Koşalay | Turkey | 1924 Summer, 1928 Summer | |
| Anja Kosan | Germany | Rhythmic gymnastics | 2024 Summer | |
| Gusman Kosanov | Soviet Union | Athletics | 1960 Summer, 1964 Summer | |
| Aleksandr Kosarev | Russia | Volleyball | 2004 Summer, 2008 Summer | |
| Maxim Kosarev | Shooting | 2004 Summer, 2012 Summer | |
| Jozef Koščak | Czechoslovakia | Athletics | 1928 Summer | |
| Mladen Košćak | Yugoslavia | Football | 1956 Summer | |
| Herbert Koschel | Germany | Athletics | 1952 Summer, 1956 Summer | |
| Sabrina Koschella | West Germany | Handball | 1984 Summer | |
| Erich Koschik | Germany | Canoe sprint | 1936 Summer | |
| Franz Koschina | Austria | Boxing | 1960 Summer | |
| Birgit Koschischek | Swimming | 2008 Summer, 2012 Summer, 2016 Summer | |
| Horst Koschka | East Germany | Biathlon | 1968 Winter, 1972 Winter | |
| Olaf Koschnitzke | Wrestling | 1988 Summer | |
| Czesława Kościańska | Poland | Rowing | 1980 Summer, 1988 Summer | |
| Robert Kościelniakowski | Fencing | 1988 Summer, 1992 Summer | |
| Toshiaki Kosedo | Japan | Volleyball | 1964 Summer | |
| Krzysztof Kosedowski | Poland | Boxing | 1980 Summer | |
| Leszek Kosedowski | 1976 Summer | |
| Jan Košek | Czechoslovakia | Ice hockey | 1936 Winter | |
| Shiori Koseki | Japan | Softball | 2000 Summer | |
| Yasuhiro Koseki | Swimming | 2016 Summer | |
| Aleksandr Kosenkov | Soviet Union | Diving | 1976 Summer, 1980 Summer | |
| Alexander Kosenkow | Germany | Athletics | 2004 Summer, 2008 Summer, 2012 Summer | |
| Arthur Köser [ Wikidata ] | Polo | 1936 Summer | |
| Evgeniya Kosetskaya | Russian Olympic Committee | Badminton | 2020 Summer | |
| Brigid Kosgei | Kenya | Athletics | 2020 Summer | |
| Reuben Kosgei | 2000 Summer | |
| Salina Kosgei | 2008 Summer | |
| Vincent Kiplangat Kosgei | 2012 Summer | |
| Lisa Kosglow | United States | Snowboarding | 1998 Winter, 2002 Winter | |
| Liudmyla Koshchey | Ukraine | Athletics | 1996 Summer | |
| Yelena Koshcheyeva | Kazakhstan | 1996 Summer, 2000 Summer, 2004 Summer | |
| Vasily Koshechkin | Russian Olympic Committee | Ice hockey | 2018 Winter | |
| Antonina Koshel | Soviet Union | Artistic gymnastics | 1972 Summer | |
| Viktoriya Koshel | Israel | Rhythmic gymnastics | 2012 Summer | |
| Petro Koshelenko | Unified Team | Road cycling | 1992 Summer | |
| Olga Kosheleva | Soviet Union | Athletics | 1956 Summer | |
| Tatiana Kosheleva | Russia | Volleyball | 2012 Summer, 2016 Summer | |
| Rimma Koshelyova | Soviet Union | Athletics | 1960 Summer | |
| Alona Koshevatskiy | Israel | Rhythmic gymnastics | 2016 Summer | |
| Marina Kosheveya | Soviet Union | Swimming | 1976 Summer | |
| Yevgeniy Koshevoy | Kazakhstan | Cross country skiing | 2006 Winter, 2010 Winter | |
| Kazuhiro Koshi | Japan | Skeleton | 2002 Winter, 2006 Winter, 2010 Winter | |
| Peoria Koshiba | Palau | Athletics | 2000 Summer, 2008 Summer | |
| Kazunori Koshikawa | Japan | 1976 Summer | |
| Yu Koshikawa | Volleyball | 2008 Summer | |
| Hideka Koshimizu | Swimming | 1984 Summer | |
| Hitomi Koshimizu | Luge | 1984 Winter, 1988 Winter | |
| Tadanori Koshino | Judo | 1992 Summer | |
| Aleksandr Koshkin | Soviet Union | Boxing | 1980 Summer | |
| Dmitriy Koshkin | Kazakhstan | Alpine skiing | 2014 Winter | |
| Klemen Kosi | Slovenia | 2014 Winter, 2018 Winter | |
| Bojan Kosić | Montenegro | 2010 Winter | |
| Viktor Kosichkin | Soviet Union | Speed skating | 1960 Winter, 1964 Winter | |
| Ryszard Kosiński | Poland | Canoe sprint | 1976 Summer | |
| Waldemar Kosiński | Weightlifting | 1988 Summer | |
| Vladimir Kosinsky | Soviet Union | Swimming | 1964 Summer, 1968 Summer, 1972 Summer | |
| Sebastian Kosiorek | Poland | Rowing | 2004 Summer, 2008 Summer | |
| Dejan Košir | Slovenia | Snowboarding | 2002 Winter, 2006 Winter | |
| Jure Košir | Alpine skiing | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter | |
| Žan Košir | Snowboarding | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Bill Koskei | Kenya | Athletics | 1972 Summer | |
| Harri Koskela | Finland | Wrestling | 1988 Summer, 1992 Summer, 1996 Summer | |
| Ilpo Koskela | Ice hockey | 1968 Winter, 1972 Winter | |
| Lauri Koskela | Wrestling | 1932 Summer, 1936 Summer | |
| Pekka Koskela | Speed skating | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Väinö Koskela | Athletics | 1948 Summer, 1952 Summer | |
| Vesa Koskela | Sweden | Boxing | 1984 Summer | |
| Kaarlo Koskelo | Finland | Wrestling | 1912 Summer | |
| Raino Koskenkorva | Road cycling | 1952 Summer | |
| Teodor Koskenniemi | Athletics | 1920 Summer | |
| Ilkka Koski | Boxing | 1952 Summer, 1956 Summer | |
| Markku Koski | Snowboarding | 2002 Winter, 2006 Winter, 2010 Winter | |
| Matias Koski | Swimming | 2012 Summer, 2016 Summer | |
| Jukka Koskilahti | Ice hockey | 1980 Winter | |
| Evangelos Koskinas | Greece | Swimming | 1980 Summer | |
| Konstantinos Koskinas | 1976 Summer | |
| Albert Koskinen | Finland | Athletics | 1952 Summer | |
| Antti Koskinen | Shooting | 1964 Summer | |
| Erkki Koskinen | Road cycling, Track cycling | 1948 Summer | |
| Hannu Koskinen | Ice hockey | 1980 Winter | |
| Kaarina Koskinen | Artistic gymnastics | 1964 Summer | |
| Kimmo Koskinen | Speed skating | 1968 Winter, 1972 Winter | |
| Kirsimarja Koskinen | Taekwondo | 2000 Summer | |
| Mikko Koskinen | Ice hockey | 2018 Winter | |
| Pentti Koskinen | Diving | 1964 Summer, 1968 Summer, 1972 Summer | |
| Tapio Koskinen | Ice hockey | 1976 Winter | |
| Jarno Koskiranta | 2018 Winter | |
| Johan von Koskull | Sailing | 1984 Summer, 1988 Summer | |
| Peter von Koskull | 1984 Summer, 1988 Summer | |
| Dieter Koslar | West Germany | Road cycling | 1968 Summer | |
| Álvaro Koslowski | Brazil | Canoe sprint | 1992 Summer | |
| Dennis Koslowski | United States | Wrestling | 1988 Summer, 1992 Summer | |
| Duane Koslowski | 1988 Summer | |
| Grzegorz Kosma | Poland | Handball | 1980 Summer | |
| Anton Kosmač | Slovenia | Athletics | 2016 Summer | |
| Kristen Kosmala | Australia | Sailing | 2004 Summer | |
| Fotis Kosmas | Greece | Athletics | 1952 Summer | |
| Ivan Kosmatin | Yugoslavia | Road cycling | 1924 Summer | |
| Piotr Kosmatko | Poland | Shooting | 1980 Summer | |
| Andreas Kosmatopoulos | Greece | Sailing | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Janko Kosmina | Yugoslavia | 1960 Summer | |
| John Kosmina | Australia | Football | 1988 Summer | |
| Mitja Kosmina | Slovenia | Sailing | 1992 Summer | |
| Sergei Kosmynin | Unified Team | Judo | 1992 Summer | |
| Enver Koso | Yugoslavia | Handball | 1980 Summer | |
| Grzegorz Kosok | Poland | Volleyball | 2012 Summer | |
| Yelena Kosolapova | Soviet Union | Diving | 1960 Summer | |
| Brent Kosolofski | Canada | Boxing | 1988 Summer | |
| Eetu Kosonen | Finland | Artistic gymnastics | 1908 Summer | |
| Silja Kosonen | Athletics | 2020 Summer, 2024 Summer | |
| David Kosoof | New Zealand | Field hockey | 2004 Summer, 2008 Summer | |
| Sergei Kosorotov | Russia | Judo | 1996 Summer | |
| Larissa Kosorukova | Russia, Israel | Canoe sprint | 1996 Summer, 2000 Summer, 2004 Summer | |
| Bohumil Kosour | Czechoslovakia | Cross country skiing, Nordic combined | 1948 Winter | |
| Artyom Kosov | Russia | Rowing | 2016 Summer | |
| Dmitry Kosov | Unified Team, Russia | Athletics | 1992 Summer, 1996 Summer | |
| Beqir Kosova | Albania | Shooting | 1972 Summer | |
| Ekaterina Kosova [ Wikidata ] | Russian Olympic Committee | Snowboarding | 2022 Winter | |
| Jan von Koss | Norway | Fencing | 1968 Summer, 1972 Summer | |
| Johan von Koss | 1948 Summer, 1952 Summer | |
| Johann Olav Koss | Speed skating | 1992 Winter, 1994 Winter | |
| John Koss | Boxing | 1920 Summer | |
| Wojciech Kossak | Poland | Art competitions | 1928 Summer | |
| Grzegorz Kossakowski | Bobsleigh | 2018 Winter | |
| Yerkebulan Kossayev | Kazakhstan | Judo | 2012 Summer | |
| Anita Kossen | Netherlands | Softball | 1996 Summer | |
| Dieudonné Kossi | Central African Republic | Boxing | 1984 Summer | |
| Artem Kossinov | Kazakhstan | Athletics | 2012 Summer | |
| Hans Kossmann | Chile | Alpine skiing | 1984 Winter | |
| Reiner Kossmann | Germany | Ice hockey | 1956 Winter | |
| Nina Kossova | Soviet Union | Athletics | 1952 Summer | |
| Zdeněk Košta | Czechoslovakia | Track cycling | 1952 Summer | |
| Aleksandar Kostadinov | Bulgaria | Wrestling | 2012 Summer | |
| Alipi Kostadinov | Czechoslovakia | Road cycling | 1980 Summer | |
| Galin Kostadinov | Bulgaria | Athletics | 2004 Summer | |
| Georgi Kostadinov | Boxing | 1972 Summer, 1976 Summer | |
| Ivo Kostadinov | Judo | 1988 Summer | |
| Petar Kostadinov | Water polo | 1980 Summer | |
| Antoaneta Kostadinova | Shooting | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Stefka Kostadinova | Athletics | 1988 Summer, 1992 Summer, 1996 Summer | |
| Robert Kostadinovich | Switzerland | Handball | 1996 Summer | |
| Anastasia Kostaki | Greece | Basketball | 2004 Summer | |
| Dimitrios Kostakos | Fencing | 2004 Summer | |
| Růžena Košťálová | Czechoslovakia | Canoe sprint | 1948 Summer | |
| Eetu Kostamo | Finland | Artistic gymnastics | 1924 Summer | |
| V'iacheslav Kostanda | Ukraine | Water polo | 1996 Summer | |
| Jelena Kostanić Tošić | Croatia | Tennis | 2004 Summer | |
| Nina Kostanjšek | Slovenia | Rowing | 2024 Summer | |
| Panagiotis Kostarellos | Greece | Boxing | 1960 Summer | |
| Sergey Kostarev | Unified Team | Fencing | 1992 Summer | |
| Guram Kostava | Soviet Union | 1960 Summer, 1964 Summer | |
| Klaus Köste | Germany, East Germany | Artistic gymnastics | 1964 Summer, 1968 Summer, 1972 Summer | |
| John Kostecki | United States | Sailing | 1988 Summer | |
| Robert Kostecki | Poland | Wrestling | 1992 Summer, 1996 Summer | |
| Norbert Kostel | Austria | Road cycling | 1988 Summer | |
| David Kostelecký | Czech Republic | Shooting | 1996 Summer, 2000 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Ivica Kostelić | Croatia | Alpine skiing | 2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter | |
| Janica Kostelić | 1998 Winter, 2002 Winter, 2006 Winter | |
| Annabel Kosten | Netherlands | Swimming | 2004 Summer | |
| Robert Köstenberger | Austria | Judo | 1980 Summer, 1984 Summer | |
| Yvonne Köstenberger | Switzerland | Diving | 1992 Summer | |
| Galina Kostenko | Soviet Union | Athletics | 1964 Summer | |
| Kateryna Kostenko | Ukraine | Figure skating | 2010 Winter | |
| Olga Kostenko | Russia | Canoe sprint | 2004 Summer | |
| Bärbel Köster | East Germany | 1976 Summer | |
| Edward Koster | Netherlands | Art competitions | 1928 Summer | |
| Josefa Köster | Germany | Canoe sprint | 1952 Summer | |
| Julian Köster | Handball | 2024 Summer | |
| Laure Koster | Luxembourg | Swimming | 1924 Summer | |
| Luis Koster | Uruguay | Basketball | 1964 Summer | |
| Maureen Koster | Netherlands | Athletics | 2016 Summer, 2024 Summer | |
| Rita Köster | Germany | Handball | 1992 Summer | |
| Tatyana Kosterina | Russian Olympic Committee | Equestrian dressage | 2020 Summer | |
| Saskia Kosterink | Netherlands | Softball | 2008 Summer | |
| Yekaterina Kostetskaya | Russia | Athletics | 2008 Summer, 2012 Summer | |
| Olena Kostevych | Ukraine | Shooting | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Eleni Kosti | Greece | Swimming | 2004 Summer, 2008 Summer | |
| Kalevi Kostiainen | Finland | Sailing | 1992 Summer | |
| Bora Kostić | Yugoslavia | Football | 1960 Summer | |
| Konstantin Kostin | Latvia | Figure skating | 1992 Winter | |
| Vladimir Kostin | Kazakhstan | Speed skating | 2002 Winter | |
| Vera Kostina | Soviet Union | Swimming | 1952 Summer | |
| Hubert Köstinger | Austria | Nordic combined | 1936 Winter | |
| Willy Köstinger | 1964 Winter | |
| Igors Kostins | Latvia | Wrestling | 2004 Summer | |
| Sergei Kostitsyn | Belarus | Ice hockey | 2010 Winter | |
| Adriana Kostiw | Brazil | Sailing | 2004 Summer, 2012 Summer | |
| Hubert Kostka | Poland | Football | 1972 Summer | |
| Aaron Kostner | Italy | Nordic combined | 2018 Winter | |
| Carolina Kostner | Figure skating | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Erwin Kostner | Ice hockey | 1984 Winter | |
| Isolde Kostner | Alpine skiing | 1994 Winter, 1998 Winter, 2002 Winter | |
| Ulrico Kostner | Cross country skiing | 1972 Winter, 1976 Winter | |
| Walter Köstner | Germany, West Germany | Fencing | 1960 Summer, 1964 Summer, 1968 Summer | |
| Dzhafar Kostoev | United Arab Emirates | Judo | 2024 Summer | |
| Jeff Kostoff | United States | Swimming | 1984 Summer, 1988 Summer | |
| Aleksandr Kostoglod | Unified Team, Russia | Canoe sprint | 1992 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Ragnhild Kostøl | Norway | Road cycling, Cycling mountain bike | 1996 Summer, 2000 Summer | |
| Roman Kostomarov | Russia | Figure skating | 2002 Winter, 2006 Winter | |
| Dimitar Kostov | Bulgaria | Cross country skiing | 1936 Winter | |
| Dimo Kostov | Wrestling | 1976 Summer | |
| Pavle Kostov | Croatia | Sailing | 2008 Summer, 2012 Summer, 2016 Summer | |
| Valko Kostov | Bulgaria | Wrestling | 1960 Summer | |
| Ani Kostova | Swimming | 1980 Summer | |
| Boyanka Kostova | Azerbaijan | Weightlifting | 2012 Summer | |
| Nina Kostova | Bulgaria | Artistic gymnastics | 1976 Summer | |
| Rumyana Kostova | Rowing | 1980 Summer | |
| Naděžda Koštovalová | Czech Republic | Athletics | 1996 Summer | |
| Jan Kostrba | Czechoslovakia | Weightlifting | 1928 Summer | |
| Tatyana Kostromina | Belarus | Table tennis | 2000 Summer, 2004 Summer, 2008 Summer | |
| Oleh Kostromitin | Ukraine | Speed skating | 1994 Winter, 1998 Winter | |
| Feliks Kostrzębski | Poland | Road cycling | 1924 Summer | |
| Andrzej Kostrzewa | Fencing | 1980 Summer, 1988 Summer | |
| Ute Kostrzewa | East Germany | Volleyball | 1980 Summer | |
| Grażyna Kostrzewińska | Poland | Figure skating | 1972 Winter | |
| Stefan Kostrzewski | Athletics | 1924 Summer, 1928 Summer | |
| Roland Kostulski | East Germany | Rowing | 1976 Summer | |
| Aleksey Kostygov | Russia | Handball | 2004 Summer, 2008 Summer | |
| Irina Kostyuchenkova | Soviet Union, Unified Team | Athletics | 1988 Summer, 1992 Summer | |
| Viktor Kostyuchenok | Belarus | Ice hockey | 2010 Winter | |
| Denys Kostyuk | Ukraine | Road cycling | 2008 Summer, 2016 Summer | |
| Marta Kostyuk | Tennis | 2024 Summer | |
| Lyudmila Kostyukevich | Belarus | Speed skating | 1998 Winter | |
| Mari Kosuge | Japan | Artistic gymnastics | 1992 Summer | |
| Yasuko Kosuge | Sailing | 2008 Summer | |
| Misai Kosugi | Art competitions | 1932 Summer | |
| Kalevi Kosunen | Finland | Boxing | 1976 Summer | |
| Oleg Kosyak | Ukraine | Artistic gymnastics | 1996 Summer | |
| Grigory Kosykh | Soviet Union | Shooting | 1968 Summer, 1972 Summer, 1976 Summer | |
| Walery Kosyl | Poland | Ice hockey | 1972 Winter, 1976 Winter | |
| Dmytro Kosynskyy | Ukraine | Athletics | 2016 Summer | |
| Zoltán Kósz | Hungary | Water polo | 1988 Summer, 1996 Summer, 2000 Summer | |
| Pierre Kőszáli | Alpine skiing | 1992 Winter | |
| Bernadett Kőszegi | Volleyball | 1980 Summer | |
| György Kőszegi | Weightlifting | 1976 Summer, 1980 Summer | |
| Jakab Kőszegi | Shooting | 1936 Summer | |
| Karolina Koszewska | Poland | Boxing | 2020 Summer | |
| Dietmar Koszewski | Germany | Athletics | 1992 Summer | |
| Constantin Koszka | Romania | Football | 1964 Summer | |
| Ladislau Koszta | Swimming | 1968 Summer | |
| György Kosztolánczy | Hungary | 1964 Summer | |
| Kamilla Kosztolányi | Rowing | 1976 Summer, 1980 Summer | |
| József Kosztyán | Canoe sprint | 1980 Summer | |
| Jerzy Koszutski | Poland | Track cycling | 1928 Summer | |
| Sorin Koszyk | United States | Rowing | 2024 Summer | |
| Dariusz Koszykowski | Poland | Canoe sprint | 1992 Summer, 1996 Summer | |
| Hamdy El-Kot | Egypt | Rowing | 2000 Summer | |
| Maciej Kot | Poland | Ski jumping | 2014 Winter, 2018 Winter | |
| Natalia Kot | Artistic gymnastics | 1956 Summer, 1960 Summer | |
| Sergey Kot | Uzbekistan | Athletics | 1996 Summer | |
| Mohamed Kota [ Wikidata ] | Egypt | Rowing | 2024 Summer | |
| Masahiro Kotaka | Japan | Weightlifting | 1984 Summer | |
| Theodoros Kotakos | Greece | Boxing | 2004 Summer | |
| Aleš Kotalík | Czech Republic | Ice hockey | 2006 Winter | |
| Mikako Kotani | Japan | Artistic swimming | 1988 Summer, 1992 Summer | |
| Sumiyuki Kotani | Wrestling | 1932 Summer | |
| Rihards Kotāns | Soviet Union | Bobsleigh | 1984 Winter | |
| Ahmed Kotb | Egypt | Volleyball | 2016 Summer | |
| Abdoulaye Kote | Senegal | Judo | 1976 Summer, 1980 Summer | |
| Robert Kotei | Ghana | Athletics | 1960 Summer | |
| Andreas Kotelnik | Ukraine | Boxing | 2000 Summer | |
| Yelena Kotelnikova | Unified Team, Russia | Judo | 1992 Summer, 1996 Summer | |
| Sergey Kotenko | Soviet Union | Water polo | 1976 Summer, 1980 Summer, 1988 Summer | |
| Vendula Kotenová | Czech Republic | Luge | 2014 Winter | |
| Anatoly Koteshev | Soviet Union | Fencing | 1972 Summer | |
| Dimitar Kotev | Bulgaria | Road cycling | 1960 Summer | |
| Jarosław Kotewicz | Poland | Athletics | 1996 Summer | |
| Alfred Kotey | Ghana | Boxing | 1988 Summer | |
| Kyle Kothari | Great Britain | Diving | 2024 Summer | |
| Norbert Kothe | West Germany | Rowing | 1976 Summer | |
| Karl Köther | Germany | Track cycling | 1928 Summer | |
| Karl Köther | West Germany | 1972 Summer | |
| Sully Kothmann | United States | Figure skating | 1956 Winter | |
| Wiradech Kothny | Germany, Thailand | Fencing | 2000 Summer, 2004 Summer, 2008 Summer | |
| Irina Kotikhina | Russia | Table tennis | 2008 Summer | |
| Paavo Kotila | Finland | Athletics | 1956 Summer | |
| Vladimir Kotin | Soviet Union | Figure skating | 1984 Winter, 1988 Winter | |
| Johannes Kotkas | Wrestling | 1952 Summer | |
| Kalevi Kotkas | Finland | Athletics | 1932 Summer, 1936 Summer | |
| Yekaterina Kotko | Unified Team | Rowing | 1992 Summer | |
| Zdzisław Kotla | Poland | Sailing | 1980 Summer | |
| Józef Kotlarczyk | Football | 1936 Summer | |
| Gene Kotlarek | United States | Ski jumping | 1960 Winter, 1964 Winter | |
| Dieter Kotlowski | Austria | Fencing | 1984 Summer | |
| Nada Kotlušek | Yugoslavia | Athletics | 1952 Summer, 1956 Summer | |
| Aleksandra Kotlyarova | Uzbekistan | 2012 Summer | |
| Olga Kotlyarova | Russia | 1996 Summer, 2000 Summer | |
| Gloria Kotnik | Slovenia | Snowboarding | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Anna Kotočová | Czechoslovakia, Slovakia | Basketball | 1988 Summer, 1992 Summer, 2000 Summer | |
| Petro Kotok | Ukraine | Wrestling | 1996 Summer | |
| Manolis Kotoulas | Greece | Cycling mountain bike | 2004 Summer | |
| Pavel Kotov | Independent Olympians | Tennis | 2024 Summer | |
| Valery Kotov | Soviet Union | Speed skating | 1960 Winter | |
| Vladimir Kotov | Athletics | 1980 Summer | |
| Oksana Kotova | Kazakhstan | Cross country skiing | 1994 Winter | |
| Tatyana Kotova | Russia | Athletics | 2000 Summer, 2004 Summer, 2008 Summer | |
| Olha Kotovska | Ukraine | 2016 Summer | |
| Dmytro Kotovskyi | Freestyle skiing | 2022 Winter | |
| Grzegorz Kotowicz | Poland | Canoe sprint | 1992 Summer, 1996 Summer, 2000 Summer | |
| Pavel Kotraba | Slovakia | Biathlon | 1994 Winter | |
| Karl Kotratschek | Austria | Athletics | 1936 Summer | |
| Emil Kotrba | Czechoslovakia | Art competitions | 1948 Summer | |
| Jiří Kotrč | Handball | 1988 Summer | |
| Aikaterini Kotroni | Greece | Shooting | 1992 Summer | |
| Dimitrios Kotronis | 1972 Summer | |
| Mark Kotsay | United States | Baseball | 1996 Summer | |
| Daniela Kotschová | Slovakia | Cross country skiing | 2014 Winter | |
| Sage Kotsenburg | United States | Snowboarding | 2014 Winter | |
| Boyan Kotsev | Bulgaria | Road cycling, Track cycling | 1952 Summer, 1960 Summer | |
| Zelym Kotsoiev | Azerbaijan | Judo | 2020 Summer, 2024 Summer | |
| Jean-Pierre Kotta | Central African Republic | Basketball | 1988 Summer | |
| George Kottaras | Greece | Baseball | 2004 Summer | |
| Gottfried Kottmann | Switzerland | Rowing | 1960 Summer, 1964 Summer | |
| Dieter Kottysch | West Germany | Boxing | 1968 Summer, 1972 Summer | |
| Tolossa Kotu | Ethiopia | Athletics | 1972 Summer, 1980 Summer | |
| Pentti Kotvio | Finland | Weightlifting | 1948 Summer | |
| Martyna Kotwiła | Poland | Athletics | 2024 Summer | |
| Ken Kotyk | Canada | Bobsleigh | 2006 Winter | |
| Vladimir Kotyrev | Soviet Union | Canoe sprint | 1952 Summer | |
| Joe Kotys | United States | Artistic gymnastics | 1948 Summer | |
| Anzhelika Kotyuga | Belarus | Speed skating | 1998 Winter, 2002 Winter | |
| Anli Kotze | South Africa | Field hockey | 2000 Summer, 2004 Summer | |
| Herman Kotze | Canoe sprint | 1992 Summer | |
| Maxi Klötzer | Germany | Boxing | 2024 Summer | |
| Ditte Kotzian | Diving | 2000 Summer, 2004 Summer, 2008 Summer | |
| Konstantinos Kotzias | Greece | Fencing | 1912 Summer, 1924 Summer | |
| Adam Kotzmann | Czech Republic | Alpine skiing | 2018 Winter | |
| Klaus Kotzmann | East Germany | Fencing | 1980 Summer | |
| Kou Lei | Ukraine | Table tennis | 2008 Summer, 2016 Summer, 2020 Summer | |
| Djétenan Kouadio | Ivory Coast | Athletics | 1988 Summer | |
| Gastom Kouadio | 1976 Summer | |
| Rose Marie Kouaho | Judo | 2000 Summer | |
| Atta Kouakou | Athletics | 1968 Summer | |
| Brou Kouakou | 1976 Summer | |
| Christian Kouamé | Football | 2020 Summer | |
| Koffi Kouao | 2020 Summer | |
| David Kouassi | Judo | 1996 Summer | |
| Eboue Kouassi | Football | 2020 Summer | |
| Elisabeth Kouassi | Handball | 1988 Summer | |
| Kouassi Kouassi | Boxing | 1988 Summer | |
| Philippe Kouassi | Archery | 2012 Summer, 2016 Summer | |
| Josef Kouba | Czechoslovakia | Art competitions | 1948 Summer | |
| Otakar Kouba | Canoe sprint | 1936 Summer | |
| Sanaa Koubaa | Germany | Athletics | 2016 Summer | |
| Ghazi Koubba | Tunisia | Volleyball | 1996 Summer | |
| František Koubek [ Wikidata ] | Czechoslovakia | Art competitions | 1936 Summer | |
| Abram Koubi [ Wikidata ] | France | Artistic gymnastics | 1900 Summer | |
| Wael Koubrousli | Lebanon | Swimming | 2008 Summer, 2012 Summer | |
| Mustapha Kouchene | Algeria | Boxing | 1984 Summer | |
| Drahomír Koudelka | Czechoslovakia | Volleyball | 1968 Summer, 1972 Summer, 1976 Summer | |
| Roman Koudelka | Czech Republic | Ski jumping | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Mikhail Koudinov | New Zealand | Artistic gymnastics | 2016 Summer, 2020 Summer | |
| Dimitrios Kougevetopoulos | Greece | Water polo | 1968 Summer, 1972 Summer | |
| Ioannis Kougialis | Cyprus | Judo | 1984 Summer | |
| Georgios Kougioumtsidis | Greece | Wrestling | 2024 Summer | |
| Sviatlana Kouhan | Belarus | Athletics | 2012 Summer | |
| František Koukal | Czechoslovakia | Fencing | 1972 Summer, 1976 Summer, 1980 Summer | |
| Martin Koukal | Czech Republic | Cross country skiing | 1998 Winter, 2002 Winter, 2006 Winter, 2010 Winter | |
| Petr Koukal | Badminton | 2008 Summer, 2012 Summer, 2016 Summer | |
| Petr Koukal | Ice hockey | 2018 Winter | |
| Klára Koukalová | Tennis | 2004 Summer, 2008 Summer, 2012 Summer | |
| Pablo Koukartsev [ Wikidata ] | Argentina | Volleyball | 2024 Summer | |
| Konstandinos Koukodimos | Greece | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Henriette Koula | Republic of the Congo | Handball | 1980 Summer | |
| Toluta'u Koula | Tonga | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Victor Koulaigue | Cameroon | Wrestling | 1980 Summer | |
| Panagiotis Koulingas | Greece | Sailing | 1964 Summer, 1968 Summer | |
| Solange Koulinka | Republic of the Congo | Handball | 1980 Summer | |
| Henriette Koulla | Cameroon | Volleyball | 2016 Summer | |
| Nikolaos Kouloumberdas [ Wikidata ] | Greece | Athletics | 1908 Summer | |
| Dimitrios Koulouris | Swimming | 2016 Summer | |
| Alexien Kouma [ Wikidata ] | Mali | 2024 Summer | |
| Sébastien Kouma | 2020 Summer | |
| Emiko Koumaru | Japan | Athletics | 1964 Summer | |
| Audrey Koumba | Gabon | Judo | 2012 Summer | |
| Sadam Koumi | Sudan | Athletics | 2020 Summer | |
| Gamal El-Din El-Koumy | Egypt | Boxing | 1984 Summer, 1988 Summer | |
| Antonios Kounadis | Greece | Athletics | 1960 Summer | |
| Stefanos Koundouriotis [ Wikidata ] | 1908 Summer | |
| Kiril Kounev | Australia | Weightlifting | 1996 Summer, 2000 Summer | |
| Muhammad Abdallah Kounta | France | Athletics | 2020 Summer, 2024 Summer | |
| Mikhail Kountras | Greece | Road cycling, Track cycling | 1976 Summer | |
| André Kouprianoff | France | Speed skating | 1960 Winter, 1964 Winter | |
| Mohcine El Kouraji | Morocco | Road cycling | 2020 Summer | |
| Iman Kouraogo [ Wikidata ] | Burkina Faso | Swimming | 2024 Summer | |
| Hazem Kourched | Egypt | Water polo | 1964 Summer | |
| Georgios Kourkoumbas | Greece | Rowing | 1980 Summer | |
| Ioannis Kourkourikis | 1996 Summer | |
| Vasileios Kournetas | Volleyball | 2004 Summer | |
| Anna Kournikova | Russia | Tennis | 1996 Summer | |
| Alexia Kourtelesi | Greece | Judo | 2004 Summer | |
| Christos Kourtellas | Cyprus | Shooting | 1996 Summer | |
| Nikolaos Kourtidis | Greece | Weightlifting | 2004 Summer, 2008 Summer | |
| Michalis Kousis | Athletics | 1976 Summer, 1980 Summer, 1984 Summer | |
| Sára Kousková | Czech Republic | Golf | 2024 Summer | |
| Ioannis Kousoulas | Greece | Athletics | 1968 Summer, 1972 Summer | |
| Tzveta Kousseva | Bulgaria | Rhythmic gymnastics | 2008 Summer | |
| Gloria Koussihouede | Benin | Swimming | 2004 Summer, 2008 Summer | |
| Konstantin Koutek | Czechoslovakia | Water polo | 1936 Summer | |
| Bedřich Koutný | Boxing | 1952 Summer | |
| Jan Koutný | Artistic gymnastics | 1924 Summer, 1928 Summer | |
| Lajos Koutny | Hungary | Ice hockey | 1964 Winter | |
| Erkki Koutonen | United States | Athletics | 1948 Summer | |
| Gustaf Alfons Koutonen | Finland | 1936 Summer | |
| Anastasios Koutoulakis [ Wikidata ] | Greece | 1908 Summer | |
| Theodoros Koutoumanis | Swimming | 1972 Summer | |
| Katerina Koutoungou | Softball | 2004 Summer | |
| Konstantina Koutra | Alpine skiing | 2002 Winter | |
| Efthalia Koutroumanidou | Beach volleyball | 2004 Summer, 2008 Summer | |
| Georgios Koutsioumpas | Wrestling | 2004 Summer | |
| Xenofon Koutsioumpas | 2004 Summer | |
| Ioannis Koutsis | Shooting | 1952 Summer, 1956 Summer | |
| Athanasios Koutsogiannis | Cross country skiing | 1976 Winter | |
| Sotiria Koutsopetrou | Diving | 2000 Summer, 2004 Summer | |
| Evgenia Koutsoudi | Artistic swimming | 2004 Summer | |
| Dimitrios Koutsoukis | Athletics | 1984 Summer | |
| Panagiotis Koutsoupakis | Wrestling | 1972 Summer | |
| Giulia Koutsoyanopulos [ Wikidata ] | Italy | Softball | 2020 Summer | |
| Kyriaki Kouvari | Greece | Taekwondo | 2008 Summer | |
| Evangelos Kouvelis | Road cycling | 1948 Summer | |
| Andreas Kouvelogiannis | Athletics | 1960 Summer | |
| Ben Kouwenhoven | Netherlands | Sailing | 1992 Summer, 1996 Summer | |
| Jan Kouwenhoven | 1992 Summer, 1996 Summer | |
| Cheikhou Kouyaté | Senegal | Football | 2012 Summer | |
| Charles Kouyos | France | Wrestling | 1948 Summer, 1952 Summer | |
| Yianno Kouyoumdjian [ Wikidata ] | Cyprus | Alpine skiing | 2022 Winter | |
| Fadi Kouzmah | Syria | Swimming | 2000 Summer | |
| Ðani Kovač | Yugoslavia | Athletics | 1960 Summer, 1964 Summer | |
| Igor Kováč | Czechoslovakia, Slovakia | 1992 Summer, 1996 Summer | |
| Jože Kovač | Yugoslavia | Ice hockey | 1984 Winter | |
| Radoslav Kováč | Czech Republic | Football | 2000 Summer | |
| Slobodan Kovač | Serbia and Montenegro | Volleyball | 1996 Summer, 2000 Summer | |
| Aleksa Kovačević | Yugoslavia | Athletics | 1936 Summer | |
| Dušan Kovačević | Rowing | 1980 Summer | |
| Igor Kovacevic | France | Water polo | 2016 Summer | |
| Ivana Kovačević | Serbia | Cross country skiing | 2014 Winter | |
| Lazar Kovačević | Shooting | 2024 Summer | |
| Mara Kovačević | Serbia and Montenegro | Judo | 2000 Summer | |
| Nikola Kovačević | Serbia | Volleyball | 2008 Summer, 2012 Summer | |
| Predrag Kovačević [ Wikidata ] | Yugoslavia | Art competitions | 1948 Summer | |
| Radomir Kovačević | Judo | 1976 Summer, 1980 Summer, 1984 Summer | |
| Sabahudin Kovačevič | Slovenia | Ice hockey | 2014 Winter, 2018 Winter | |
| Uroš Kovačević | Serbia | Volleyball | 2012 Summer, 2024 Summer | |
| Ivan Kovachev | Bulgaria | Water polo | 1972 Summer | |
| Nikola Kovachev | Football | 1956 Summer, 1960 Summer | |
| Petar Kovachev | Cross country skiing | 1952 Winter | |
| Sava Kovachev | Volleyball | 1988 Summer | |
| Khristo Kovachki | Biathlon | 1988 Winter | |
| Dragan Kovačić | Yugoslavia | Basketball | 1964 Summer | |
| Igor Kovačić | Serbia and Montenegro | Canoe sprint | 2000 Summer | |
| Jani Kovačič | Slovenia | Volleyball | 2024 Summer | |
| Miodrag Kovačić | Serbia and Montenegro | Weightlifting | 1996 Summer | |
| Zdravko Kovačić | Yugoslavia | Water polo | 1948 Summer, 1952 Summer, 1956 Summer | |
| Marián Kovačócy | Slovakia | Shooting | 2016 Summer, 2020 Summer, 2024 Summer | |
| Alena Kováčová | Basketball | 2000 Summer | |
| Ivana Kováčová | Artistic gymnastics | 2008 Summer | |
| Lenka Kováčová | Czechoslovakia | Rowing | 1992 Summer | |
| Ágnes Kovács | Hungary | Swimming | 1996 Summer, 2000 Summer, 2004 Summer | |
| Andrei Kovacs | Romania | Alpine skiing | 1952 Winter | |
| Antal Kovács | Hungary | Judo | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Attila Kovács | Fencing | 1964 Summer | |
| Attila Kovács | Athletics | 1988 Summer | |
| Balázs Kovács | 2000 Summer | |
| Benedek Kovács | Swimming | 2020 Summer | |
| Csaba Kovács | Rowing | 1952 Summer, 1956 Summer, 1960 Summer | |
| Dezső Kovács [ Wikidata ] | Polo | 1936 Summer | |
| Dusán Kovács | Athletics | 1996 Summer | |
| Edit Kovács | Swimming | 1968 Summer, 1972 Summer | |
| Edit Kovács | Fencing | 1976 Summer, 1980 Summer, 1988 Summer | |
| Ella Kovacs | Romania | Athletics | 1992 Summer | |
| Emese Kovács | Hungary | Swimming | 2008 Summer | |
| Erika Kovacs | Romania | Bobsleigh | 2002 Winter | |
| Ernst Kovács [ Wikidata ] | Austria | Water polo | 1912 Summer | |
| Ferenc Kovács | Hungary | Football | 1960 Summer | |
| Gyula Kovács | Wrestling | 1948 Summer, 1952 Summer, 1956 Summer | |
| Ida Kovács | Athletics | 2004 Summer | |
| Ilona Kovács | Basketball | 1980 Summer | |
| Imre Kovács | | 1952 Summer | |
| Iosif Kovács | Romania | 1952 Summer | |
| István Kovács | Hungary | Wrestling | 1972 Summer, 1976 Summer, 1980 Summer | |
| István Kovács | Boxing | 1992 Summer, 1996 Summer | |
| Iván Kovács | Fencing | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Joe Kovacs | United States | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| József Kovács | Hungary | 1936 Summer | |
| József Kovács | 1952 Summer, 1956 Summer, 1960 Summer | |
| József Kovács | Wrestling | 1952 Summer | |
| József Kovács | Football | 1972 Summer | |
| Judit Kovács | Archery | 1980 Summer, 1992 Summer, 1996 Summer | |
| Judit Kovács | Athletics | 1992 Summer | |
| Kálmán Kovács | Football | 1936 Summer | |
| Katalin Kovács | Canoe sprint | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Lajos Kovács | Athletics | 1960 Summer | |
| Laszlo Kovacs | Australia | Wrestling | 2000 Summer | |
| Leslie Kovacs | Fencing | 1956 Summer | |
| Mihály Kovács | Hungary | Handball | 1988 Summer | |
| Miklós Kovács | Shooting | 1956 Summer | |
| Mónika Kovács | Alpine skiing | 1998 Winter | |
| Nándor Kovács | Athletics | 1908 Summer, 1912 Summer | |
| Norbert Kovács | Swimming | 2008 Summer | |
| Pál Kovács | Fencing | 1936 Summer, 1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer | |
| Péter Kovács | Handball | 1976 Summer, 1980 Summer, 1988 Summer | |
| Péter Kovács | Artistic gymnastics | 1980 Summer | |
| Richárd Kovács | Boxing | 2024 Summer | |
| Rita Kovács | Swimming | 1996 Summer | |
| Sarolta Kovács | Modern pentathlon | 2012 Summer, 2016 Summer, 2020 Summer | |
| Tamás Kovács | Fencing | 1968 Summer, 1972 Summer, 1976 Summer | |
| Tamás Kovács | Athletics | 2012 Summer | |
| Viktor Kovács | 2000 Summer | |
| Zoltán Kovács | Shooting | 1988 Summer | |
| Zoltán Kovács | Weightlifting | 2000 Summer, 2004 Summer | |
| Zsófia Kovács | Triathlon | 2012 Summer, 2016 Summer, 2020 Summer | |
| Zsófia Kovács | Artistic gymnastics | 2016 Summer, 2020 Summer | |
| Zsolt Kovács | Biathlon | 1984 Winter, 1988 Winter | |
| Zsuzsa Kovács | Swimming | 1964 Summer | |
| Aladár Kovácsi | Modern pentathlon | 1952 Summer | |
| László Kovácsi | Sailing | 1996 Summer | |
| Anikó Kovacsics | Handball | 2020 Summer | |
| Miklós Kovacsics | 1980 Summer | |
| Mónika Kovacsicz | 2008 Summer | |
| Zoltán Kővágó | Athletics | 2000 Summer, 2004 Summer, 2008 Summer, 2016 Summer | |
| Anastasia Koval | Ukraine | Artistic gymnastics | 2008 Summer | |
| Denis Koval | Russia | Speed skating | 2014 Winter | |
| Vera Koval | Judo | 2008 Summer | |
| Viktoriya Koval | Ukraine | Archery | 2008 Summer | |
| Vitali Koval | Belarus | Ice hockey | 2010 Winter | |
| Yuriy Koval | Ukraine | Wrestling | 2008 Summer | |
| Kati Kovalainen | Finland | Ice hockey | 2006 Winter | |
| Ilya Kovalchuk | Russia, Russian Olympic Committee | 2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| | Czechoslovakia | Cross country skiing | 1948 Winter, 1952 Winter | |
| Aleksandr Kovalenko | Soviet Union, Unified Team | Athletics | 1988 Summer, 1992 Summer | |
| Andrei Kovalenko | Unified Team, Russia | Ice hockey | 1992 Winter, 1998 Winter | |
| Andrei Kovalenko | Unified Team, Ukraine, Australia | Water polo | 1992 Summer, 1996 Summer, 2000 Summer | |
| Lyudmyla Kovalenko | Ukraine | Athletics | 2012 Summer | |
| Nazar Kovalenko | 2012 Summer, 2016 Summer | |
| Oleg Kovalenko | Kazakhstan | Ice hockey | 2006 Winter | |
| Pyotr Kovalenko | Soviet Union | Ski jumping | 1964 Winter | |
| Sergei Kovalenko | Basketball | 1968 Summer, 1972 Summer | |
| Sergei Kovalenko | Russia | Shooting | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Sergey Kovalenko | Wrestling | 2008 Summer | |
| Vitali Kovalenko | Soviet Union | Volleyball | 1964 Summer | |
| Alexei Kovalev | Unified Team, Russia | Ice hockey | 1992 Winter, 2002 Winter, 2006 Winter | |
| Evgeny Kovalev | Russia | Track cycling | 2008 Summer, 2012 Summer | |
| Gennady Kovalev | Boxing | 2004 Summer, 2008 Summer | |
| Ivan Kovalev | Track cycling | 2012 Summer | |
| Nikolay Kovalev | Fencing | 2008 Summer, 2012 Summer, 2016 Summer | |
| Alina Kovaleva | Russian Olympic Committee | Curling | 2022 Winter | |
| Nadezhda Kovalevich | Soviet Union | Canoe sprint | 1988 Summer | |
| Anton Kovalevski | Ukraine | Figure skating | 2006 Winter, 2010 Winter | |
| Aleksandr Kovalevsky | Kyrgyzstan | Wrestling | 1996 Summer, 2000 Summer | |
| Sergey Kovalevsky | Belarus | 1996 Summer | |
| Julija Kovaliova | Lithuania | Artistic gymnastics | 2000 Summer | |
| Stanislav Kovalov | Ukraine | Rowing | 2020 Summer, 2024 Summer | |
| Kateřina Kovalová | Czech Republic | Figure skating | 2002 Winter | |
| Ainārs Kovals | Latvia | Athletics | 2008 Summer, 2012 Summer | |
| Aleksandr Vladimirovich Kovalyov | Russia | Canoe sprint | 2000 Summer, 2004 Summer | |
| Andrey Kovalyov | Belarus | Ice hockey | 1998 Winter, 2002 Winter | |
| Dmitry Kovalyov | Russia | Rowing | 2000 Summer | |
| Dmitry Kovalyov | Handball | 2008 Summer | |
| Vladimir Kovalyov | Soviet Union | Figure skating | 1972 Winter, 1976 Winter, 1980 Winter | |
| Lyudmila Kovalyova [ Wikidata ] | Ukraine | Athletics | 2000 Summer | |
| Tauno Kovanen | Finland | Wrestling | 1952 Summer | |
| Jakub Kovář | Czech Republic | Ice hockey | 2014 Winter | |
| Jan Kovář | 2018 Winter, 2022 Winter | |
| Jiří Kovář | Czechoslovakia | Swimming | 1948 Summer | |
| Jiří Kovář | Italy | Volleyball | 2020 Summer | |
| Karel Kovář | Czechoslovakia | Rowing | 1968 Summer | |
| Károly Kővári | Hungary | Alpine skiing, Nordic combined | 1936 Winter, 1948 Winter | |
| Josef Kovařík | Czechoslovakia | Nordic combined | 1992 Winter | |
| Petr Kovářík | Shooting | 1972 Summer, 1976 Summer | |
| Radka Kovaříková | Czechoslovakia, Czech Republic | Figure skating | 1992 Winter, 1994 Winter | |
| Marie Kovářová | Czechoslovakia | Artistic gymnastics | 1948 Summer | |
| Ivan Kovbasnyuk | Ukraine | Alpine skiing | 2018 Winter, 2022 Winter | |
| Jamie Koven | United States | Rowing | 1996 Summer, 2000 Summer | |
| Andriy Kovenko | Ukraine | Athletics | 2008 Summer | |
| Csaba Köves | Hungary | Fencing | 1992 Summer, 1996 Summer, 2000 Summer | |
| Gábor Köves | Tennis | 1988 Summer, 1996 Summer, 2000 Summer | |
| Margit Kövessi | Artistic gymnastics | 1928 Summer | |
| Serhiy Kovhanko | Ukraine | Boxing | 1996 Summer | |
| Vladimir Kovin | Soviet Union | Ice hockey | 1984 Winter | |
| Danka Kovinić | Montenegro | Tennis | 2016 Summer, 2024 Summer | |
| Valentina Kovpan | Soviet Union | Archery | 1976 Summer | |
| Alexey Kovrigin | Russia | Swimming | 2000 Summer, 2004 Summer | |
| Marina Kovrigina | Judo | 1996 Summer | |
| Nikolai Kovsh | Soviet Union, Unified Team | Track cycling | 1988 Summer, 1992 Summer | |
| Yuri Kovshov | Soviet Union | Equestrian dressage | 1980 Summer, 1988 Summer | |
| Oksana Kovtonovich | Belarus | Shooting | 2000 Summer | |
| Dmitry Kovtsun | Unified Team | Athletics | 1992 Summer | |
| Illia Kovtun | Ukraine | Artistic gymnastics | 2020 Summer, 2024 Summer | |
| Olena Kovtun | Soviet Union, Ukraine | Table tennis | 1988 Summer, 2000 Summer | |
| Maria Kovtunovskaya | Russia | Water polo | 2012 Summer | |
| Viktoriya Kovyreva | Kazakhstan | Athletics | 2000 Summer, 2004 Summer | |
| David Kowah | Sierra Leone | Boxing | 1996 Summer | |
| Frédéric Kowal | France | Rowing | 1996 Summer, 2000 Summer | |
| Jan Kowal | Poland | Ski jumping | 1988 Winter | |
| Kristy Kowal | United States | Swimming | 2000 Summer | |
| Matylda Kowal | Poland | Athletics | 2012 Summer, 2016 Summer | |
| Stanisław Kowal | 1952 Summer | |
| Yoann Kowal | France | 2012 Summer, 2016 Summer | |
| Stanisław Kowalczewski | Poland | Shooting | 1924 Summer | |
| Birgit Kowalczik | West Germany | Swimming | 1984 Summer | |
| Aleksandra Kowalczuk | Poland | Taekwondo | 2020 Summer | |
| Bogdan Kowalczyk | Handball | 1972 Summer | |
| Jan Kowalczyk | Equestrian jumping | 1968 Summer, 1972 Summer, 1980 Summer | |
| Julia Kowalczyk | Judo | 2020 Summer | |
| Justyna Kowalczyk-Tekieli | Cross country skiing | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Mariano Kowalczyk | Argentina | Rowing | 1996 Summer | |
| Wojciech Kowalczyk | Poland | Football | 1992 Summer | |
| Zofia Kowalczyk | Artistic gymnastics | 1952 Summer | |
| Edmund Kowalec | Rowing | 1924 Summer | |
| Maciej Kowalewicz | Shooting | 2024 Summer | |
| Günter Kowalewski | West Germany | Wrestling | 1972 Summer | |
| Jakub Kowalewski | Poland | Luge | 2018 Winter, 2022 Winter | |
| Jerzy Kowalewski | Diving | 1960 Summer, 1968 Summer | |
| Mirosław Kowalewski | Rowing | 1980 Summer | |
| Roman Kowalewski | 1972 Summer | |
| Katarzyna Kowalska | Athletics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Maria Kowalska | Alpine skiing | 1952 Winter, 1956 Winter | |
| Adam Kowalski | Ice hockey | 1932 Winter, 1936 Winter, 1948 Winter | |
| Aleksander Kowalski | 1928 Winter, 1932 Winter | |
| Aleksander Kowalski | Nordic combined | 1956 Winter | |
| Daniel Kowalski | Australia | Swimming | 1996 Summer, 2000 Summer | |
| Jerzy Kowalski | Poland | Athletics | 1960 Summer | |
| Jerzy Kowalski | Rowing | 2020 Summer | |
| Kerstin Kowalski | Germany | 2000 Summer, 2004 Summer | |
| Manja Kowalski | 2000 Summer | |
| Wojciech Kowalski | Poland | Tennis | 1988 Summer | |
| Dariusz Kowaluk | Athletics | 2020 Summer | |
| Kevin Kowalyk | Canada | Rowing | 2012 Summer | |
| Karl Kowanz | Austria | Football | 1948 Summer | |
| Felicjan Kowarski | Poland | Art competitions | 1936 Summer | |
| Yoshihiko Kowata | Japan | Equestrian eventing | 1992 Summer, 1996 Summer | |
| Katarina Kowplos | Australia | Shooting | 2020 Summer | |
| Adolf Koxeder | Austria | Bobsleigh | 1964 Winter | |
| Grisi Koxhaku [ Wikidata ] | Albania | Swimming | 2024 Summer | |
| Naoki Koyama [ Wikidata ] | Japan | Athletics | 2024 Summer | |
| Remi Koyama | Ice hockey | 2022 Winter | |
| Takaharu Koyama | Athletics | 1972 Summer, 1976 Summer | |
| Tomoaki Koyama | Figure skating | 1992 Winter | |
| Tsutomu Koyama | Volleyball | 1964 Summer | |
| Yōhei Koyama [ Wikidata ] | Alpine skiing | 2022 Winter | |
| Tomio Koyanagi | Diving | 1936 Summer | |
| Ellie Koyander | Great Britain | Freestyle skiing | 2010 Winter | |
| Hidehachi Koyasu | Japan | Fencing | 1984 Summer | |
| Dimitar Koychev | Bulgaria | Artistic gymnastics | 1972 Summer, 1976 Summer | |
| Tuğba Koyuncu | Turkey | Athletics | 2012 Summer | |
| Tetiana Kozachenko | Ukraine | Freestyle skiing | 1998 Winter, 2002 Winter, 2006 Winter | |
| Małgorzata Kozaczuk | Poland | Fencing | 2016 Summer | |
| Anna Kozak | Belarus | Athletics | 1996 Summer, 2000 Summer, 2008 Summer | |
| Danuta Kozák | Hungary | Canoe sprint | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Dorothy Kozak | Canada | Athletics | 1956 Summer | |
| Jan Kozák | Czechoslovakia | Basketball | 1948 Summer, 1952 Summer | |
| Luca Kozák | Hungary | Athletics | 2020 Summer, 2024 Summer | |
| Václav Kozák | Czechoslovakia | Rowing | 1960 Summer, 1964 Summer, 1968 Summer | |
| Waldemar Kozak | Poland | Basketball | 1972 Summer | |
| Walter Kozak | Canada | Boxing | 1956 Summer | |
| Jan Kozakiewicz | Poland | Swimming | 2020 Summer | |
| Władysław Kozakiewicz | Athletics | 1976 Summer, 1980 Summer | |
| Olga Kozakova | Soviet Union | Volleyball | 1976 Summer | |
| Jan Kozamernik | Slovenia | 2024 Summer | |
| Ahmet Tuna Kozan | Turkey | Football | 1960 Summer | |
| Inga Kožarenoka | Latvia | Athletics | 2000 Summer | |
| Ágnes Kozáry | Hungary | 1992 Summer | |
| Grzegorz Kozdrański | Poland | Diving | 1992 Summer | |
| Andrej Koželj | Yugoslavia | Alpine skiing | 1976 Winter | |
| Matjaž Kozelj | Slovenia | Swimming | 1992 Summer | |
| Jan Koželuh | Czechoslovakia | Tennis | 1924 Summer | |
| Lucas Kozeniesky | United States | Shooting | 2016 Summer, 2020 Summer | |
| Klavdija Koženkova | Soviet Union | Rowing | 1976 Summer | |
| Stanisław Kozera | Poland | 1964 Summer | |
| Sholpan Kozhakhmetova | Kazakhstan | Athletics | 2012 Summer | |
| Bakhtiyar Kozhatayev | Road cycling | 2016 Summer | |
| Iryna Kozhemyakina | Ukraine | Athletics | 2004 Summer | |
| Anastasiya Kozhenkova | Rowing | 2012 Summer, 2016 Summer, 2024 Summer | |
| Alexander Kozhevnikov | Soviet Union | Ice hockey | 1984 Winter, 1988 Winter | |
| Kirill Kozhevnikov | Sailing | 1952 Summer | |
| Pyotr Kozhevnikov | Athletics | 1952 Summer | |
| Olga Kozhevnikova | Kazakhstan | Artistic gymnastics | 1996 Summer | |
| Yelizaveta Kozhevnikova | Unified Team, Russia | Freestyle skiing | 1992 Winter, 1994 Winter | |
| Inga Kozhokhina | Ukraine | Rhythmic gymnastics | 2004 Summer | |
| Alina Kozich | Artistic gymnastics | 2004 Summer, 2008 Summer | |
| Marian Kozicki | Poland | Equestrian jumping | 1968 Summer, 1972 Summer, 1980 Summer | |
| Olga Kozičová | Czechoslovakia | Swimming | 1968 Summer | |
| Lech Koziejowski | Poland | Fencing | 1972 Summer, 1976 Summer, 1980 Summer | |
| Lukáš Kožienka | Slovakia | Bobsleigh | 2014 Winter | |
| Andrzej Kozik | Poland | Luge | 1976 Winter | |
| Yulia Kozik | Russian Olympic Committee | 3x3 basketball | 2020 Summer | |
| Krešimir Kozina | Croatia | Handball | 2016 Summer | |
| Čestmír Kožíšek | Czech Republic | Ski jumping | 2018 Winter, 2022 Winter | |
| Dušan Kožíšek | Cross country skiing | 2006 Winter, 2010 Winter, 2014 Winter | |
| Josef Kozlík | Czechoslovakia | Shooting | 1924 Summer | |
| Lada Kozlíková | Czech Republic | Track cycling, Road cycling | 2000 Summer, 2004 Summer, 2008 Summer | |
| Aleksandar Kozlina | Yugoslavia | Football | 1960 Summer | |
| Miladin Kozlina | Slovenia | Handball | 2004 Summer | |
| Boris Kozlov | Soviet Union | Diving | 1976 Summer | |
| Ivan Kozlov | Ukraine | Ski jumping | 1998 Winter | |
| Nikolay Kozlov | Unified Team, Russia | Water polo | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Viktor Kozlov | Russia | Ice hockey | 2006 Winter, 2010 Winter | |
| Vitalij Kozlov | Lithuania | Athletics | 2008 Summer | |
| Vladimir Kozlov | Soviet Union | Speed skating | 1984 Winter | |
| Vladimir Kozlov | Bobsleigh | 1988 Winter | |
| Anna Kozlova | Unified Team, United States | Artistic swimming | 1992 Summer, 2000 Summer, 2004 Summer | |
| Todor Kozlovski | Bulgaria | Shooting | 1960 Summer, 1964 Summer | |
| Dmitrii Kozlovskii | Russian Olympic Committee | Figure skating | 2022 Winter | |
| Ondřej Kozlovský | Czech Republic | Bobsleigh | 2010 Winter | |
| Bogusława Kozłowska-Tomasiak | Poland | Rowing | 1976 Summer, 1980 Summer | |
| Andrzej Kozłowski | Weightlifting | 1992 Summer | |
| Artur Kozłowski | Athletics | 2016 Summer | |
| Dariusz Kozłowski | Biathlon | 1992 Winter | |
| Kacper Kozłowski | Athletics | 2012 Summer | |
| Marian Kozłowski | Canoe sprint | 1936 Summer | |
| Rudolf Kozłowski | Weightlifting | 1964 Summer | |
| Andrea Kozma | Austria | Field hockey | 1980 Summer | |
| Dominik Kozma | Hungary | Swimming | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| István Kozma | Wrestling | 1960 Summer, 1964 Summer, 1968 Summer | |
| László Kozma | Rowing | 1936 Summer | |
| Louis Kozma | Belgium | Swimming | 1956 Summer | |
| Mihály Kozma | Hungary | Football | 1972 Summer | |
| Péter Kozma | Alpine skiing | 1984 Winter | |
| József Kozma | Basketball | 1948 Summer | |
| György Kozmann | Canoe sprint | 2004 Summer, 2008 Summer | |
| Marek Koźmiński | Poland | Football | 1992 Summer | |
| Primož Kozmus | Slovenia | Athletics | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Kristina Koznick | United States | Alpine skiing | 1998 Winter, 2002 Winter, 2006 Winter | |
| Stavroula Kozompoli | Greece | Water polo | 2004 Summer, 2008 Summer | |
| Alja Kozorog | Slovenia | Canoe slalom | 2020 Summer | |
| Alexandru Kozovits | Romania | Football | 1924 Summer | |
| Kojin Kozu | Japan | Art competitions | 1932 Summer | |
| Masaaki Kozu | Cross country skiing | 1994 Winter, 1998 Winter, 2002 Winter | |
| Wojciech Kozub | Poland | Biathlon | 1998 Winter, 2002 Winter | |
| Kamilla Kozuback [ Wikidata ] | Hungary | Snowboarding | 2022 Winter | |
| Matěj Kozubek | Czech Republic | Marathon swimming | 2020 Summer | |
| Margareta Kozuch | Germany | Beach volleyball | 2020 Summer | |
| Miki Kozuka | Japan | Field hockey | 2020 Summer, 2024 Summer | |
| Takahiko Kozuka | Figure skating | 2010 Winter | |
| Tsuguhiko Kozuka | 1968 Winter | |
| Deni Kožul | Slovenia | Table tennis | 2020 Summer, 2024 Summer | |
| Gordan Kožulj | Croatia | Swimming | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Brandon Kozun | Canada | Ice hockey | 2018 Winter | |
| Igor Kozyr | Belarus | Wrestling | 1996 Summer | |
| Valentyna Kozyr | Soviet Union | Athletics | 1968 Summer | |
| Aleksandr Kozyrev | Russia | Curling | 2014 Winter | |
| Sergey Kozyrev | Russian Olympic Committee | Wrestling | 2020 Summer | |
| Lyubov Kozyreva | Soviet Union | Cross country skiing | 1956 Winter, 1960 Winter | |
| Lyubov Kozyreva | Volleyball | 1980 Summer | |
| Alexis Kpadé [ Wikidata ] | Benin | Swimming | 2024 Summer | |
| Christian Kpakpo | Ghana | Boxing | 1984 Summer | |
| Jonathan Kpakpo | Football | 1968 Summer | |
| Hilary Kpatcha | France | Athletics | 2024 Summer | |
| Eméric Kpegba | Togo | Swimming | 2016 Summer | |
| Akissi Kpidi | Ivory Coast | Athletics | 1988 Summer | |
| Adzo Kpossi | Togo | Swimming | 2012 Summer, 2016 Summer | |