| Name | Nation | Sport | Games | Notes |
|---|
| Poul Kjær Poulsen | Denmark | Handball | 1980 Summer | |
| Per Kjærgaard Nielsen | Sailing | 1976 Summer, 1980 Summer | |
| Kristian Skjødt Kjærgaard | 2004 Summer | |
| Steffen Kjærgaard | Norway | Track cycling | 1992 Summer | |
| Tonje Kjærgaard | Denmark | Handball | 1996 Summer, 2000 Summer | |
| Line Kjærsfeldt | Badminton | 2016 Summer | |
| Jan Kjærulff | Sailing | 1972 Summer | |
| Jyri Kjäll | Finland | Boxing | 1992 Summer | |
| Viktor Kjäll | Sweden | Curling | 2010 Winter, 2014 Winter | |
| Oscar Kjällander | Boxing | 1928 Summer | |
| Olav Kjelbotn | Norway | Cross country skiing | 1928 Winter | |
| Stine Brun Kjeldaas | Snowboarding | 1998 Winter, 2002 Winter | |
| Jakob Kjeldbjerg | Denmark | Football | 1992 Summer | |
| Erik Kjeldsen | Track cycling | 1924 Summer | |
| Søren Kjeldsen | Golf | 2016 Summer | |
| Magnus Kjell | Sweden | Sailing | 1984 Summer | |
| Patric Kjellberg | Ice hockey | 1992 Winter, 1994 Winter, 1998 Winter | |
| Peder Kjellberg | Norway | Boxing | 1920 Summer | |
| Walter Kjellberg | Finland | Sailing | 1936 Summer | |
| Anna Kjellbin | Sweden | Ice hockey | 2022 Winter | |
| Per Kjellin | Judo | 1984 Summer | |
| Sara Kjellin | Freestyle skiing | 1998 Winter, 2002 Winter, 2006 Winter | |
| Erik Kjellström | Athletics | 1928 Summer | |
| Jørre Kjemperud | Norway | Beach volleyball | 2000 Summer, 2004 Summer, 2008 Summer | |
| Olaf Kjems | Denmark | Artistic gymnastics | 1912 Summer | |
| Stefan Kjernholm | Sweden | Luge | 1976 Winter, 1980 Winter | |
| Edgar Kjerran | Norway | Weightlifting | 1972 Summer | |
| Jakob Kjersem | Athletics | 1948 Summer, 1952 Summer | |
| Steen Kjølhede | Denmark | Sailing | 1972 Summer | |
| Johan Kjølstad | Norway | Cross country skiing | 2006 Winter, 2010 Winter | |
| Marianne Kjørstad | Alpine skiing | 1994 Winter | |
| Jon Inge Kjørum | Ski jumping | 1988 Winter | |
| Laurids Kjær [ Wikidata ] | Denmark | Shooting | 1900 Summer | |
| Lasse Kjus | Norway | Alpine skiing | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter, 2006 Winter | |
| Norbert Klaar | East Germany | Shooting | 1976 Summer | |
| Kathrin Klaas | Germany | Athletics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Arie Klaase | Netherlands | 1928 Summer | |
| Helie Klaasse | Rowing | 1976 Summer | |
| Arno Klaassen | Bobsleigh | 2006 Winter, 2014 Winter | |
| Jozef Klaassen | Rowing | 2008 Summer, 2012 Summer | |
| René Klaassen | Field hockey | 1984 Summer, 1988 Summer | |
| Catharina Maria van der Klaauw | Fencing | 1936 Summer | |
| Rudolf Klaban | Austria | Athletics | 1960 Summer, 1964 Summer, 1968 Summer | |
| Rudolf Klabouch | Czechoslovakia | Canoe sprint | 1952 Summer, 1956 Summer | |
| Lizzy Kladensky | Austria | Cross country skiing | 1952 Winter | |
| Petr Kladiva | Czechoslovakia | Swimming | 1988 Summer | |
| Matjaž Kladnik | Slovenia | Ski jumping | 1994 Winter | |
| Spyridon Kladouchas | Greece | Boxing | 2004 Summer | |
| Johannes Høsflot Klæbo | Norway | Cross country skiing | 2018 Winter, 2022 Winter | |
| Ulrich Klaes | West Germany | Field hockey | 1972 Summer | |
| Carl Klæth | Norway | Artistic gymnastics | 1908 Summer | |
| Rogério Klafke | Brazil | Basketball | 1996 Summer | |
| Mohamed Klai | Tunisia | Handball | 1972 Summer | |
| Tira Klai-Angtong | Thailand | Athletics | 1964 Summer | |
| Jeff Klaiber | United States | Speed skating | 1988 Winter, 1992 Winter | |
| Pim-on Klaisuban | Thailand | Shooting | 2016 Summer | |
| Aleksander Kłak | Poland | Football | 1992 Summer | |
| Aija Klakocka | Latvia | Basketball | 2008 Summer | |
| Paula Klamburg | Spain | Artistic swimming | 2012 Summer | |
| Evan Klamer | Denmark | Track cycling | 1948 Summer | |
| Rachel Klamer | Netherlands | Triathlon | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Franz Klammer | Austria | Alpine skiing | 1976 Winter, 1984 Winter | |
| David Klammert | Czech Republic | Judo | 2020 Summer, 2024 Summer | |
| Tibor Klampár | Hungary | Table tennis | 1988 Summer | |
| Neža Klančar | Slovenia | Swimming | 2024 Summer | |
| Alojz Klančnik | Yugoslavia | Cross country skiing | 1936 Winter, 1948 Winter | |
| Karel Klančnik | Ski jumping | 1948 Winter, 1952 Winter | |
| Herbert Klang | Austria | Ice hockey | 1928 Winter | |
| Matyáš Klang | Czech Republic | Rowing | 2012 Summer | |
| Iraklis Klangas | Greece | 1948 Summer, 1952 Summer | |
| Jan Klapáč | Czechoslovakia | Ice hockey | 1964 Winter, 1968 Winter | |
| Lukas Klapfer | Austria | Nordic combined | 2014 Winter, 2018 Winter | |
| Wolfgang Klapheck | West Germany | Rowing | 1988 Summer | |
| Rudolf Klapka | Czechoslovakia | Football | 1920 Summer | |
| Nicolai Klapkarek | West Germany | Swimming | 1984 Summer | |
| Anita Klapote | Latvia | Athletics | 1992 Summer | |
| Josef Klapuch | Czechoslovakia | Wrestling | 1936 Summer | |
| Truus Klapwijk | Netherlands | Diving, Swimming | 1924 Summer, 1928 Summer | |
| Gustaf Klarén | Sweden | Wrestling | 1932 Summer | |
| Marcel Klarenbeek | Netherlands | Athletics | 1980 Summer | |
| Léon Klares | Luxembourg | Canoe sprint | 1960 Summer | |
| Luka Lovre Klarica [ Wikidata ] | Croatia | Handball | 2024 Summer | |
| Patrick Klas | Netherlands | Judo | 1996 Summer | |
| Michal Klasa | Czechoslovakia | Track cycling, Road cycling | 1976 Summer, 1980 Summer | |
| Miroslav Klásek | Athletics | 1936 Summer | |
| Marten Klasema | Netherlands | 1936 Summer | |
| Kurts Klāsens | Latvia | Sailing | 1928 Summer | |
| Alicja Klasik | Poland | Fencing | 2024 Summer | |
| Luka Klasinc | Slovenia | Figure skating | 1992 Winter | |
| Craig Klass | United States | Water polo | 1988 Summer, 1992 Summer | |
| Mary Klass | Singapore | Athletics | 1956 Summer | |
| Cindy Klassen | Canada | Speed skating | 2002 Winter, 2006 Winter, 2010 Winter | |
| Danny Klassen | Baseball | 2004 Summer | |
| Katarzyna Klata | Poland | Archery | 1996 Summer | |
| Daniel Klatt | United States | Water polo | 2004 Summer | |
| Martyna Klatt | Poland | Canoe sprint | 2024 Summer | |
| Werner Klatt | East Germany | Rowing | 1976 Summer | |
| Charles Klauder | United States | Art competitions | 1928 Summer, 1932 Summer | |
| Lieke Klaus | Netherlands | Cycling BMX racing | 2008 Summer | |
| Gert-Dietmar Klause | East Germany | Cross country skiing | 1968 Winter, 1972 Winter, 1976 Winter | |
| Thomas Klauser | West Germany | Ski jumping | 1984 Winter, 1988 Winter | |
| Alfred Klausnitzer | Czechoslovakia | Fencing | 1936 Summer | |
| Dieter Klauß | East Germany | Field hockey | 1968 Summer | |
| Gauthier Klauss | France | Canoe slalom | 2012 Summer, 2016 Summer | |
| Max Klauß | East Germany | Athletics | 1972 Summer | |
| László Klauz | Hungary | Wrestling | 1988 Summer, 1992 Summer | |
| Kārlis Kļava | Latvia | Shooting | 1936 Summer | |
| Arne Klavenes | Norway | Road cycling | 1976 Summer | |
| Anton Fredrik Klaveness | Equestrian jumping | 1928 Summer | |
| Kristine Klaveness | Rowing | 1996 Summer | |
| Karel Klaver | Netherlands | Field hockey | 2004 Summer | |
| Lieke Klaver | Athletics | 2020 Summer, 2024 Summer | |
| Bep van Klaveren | Boxing | 1928 Summer | |
| Piet van Klaveren | 1952 Summer | |
| Līga Kļaviņa | Latvia | Athletics | 2000 Summer | |
| Aldis Kļaviņš | Canoe slalom | 1996 Summer | |
| Olafs Kļaviņš | Soviet Union | Bobsleigh | 1988 Winter | |
| Boris Klavora | Yugoslavia | Rowing | 1964 Summer | |
| Frank Klawonn | East Germany | 1988 Summer | |
| Mikhail Klaynerov | Bulgaria | Road cycling | 1924 Summer | |
| Austin Kleba | United States | Speed skating | 2022 Winter | |
| Anatoly Klebanov | Soviet Union | Water polo | 1976 Summer | |
| Émile Kleber | France | Bobsleigh | 1936 Winter | |
| Frank Kleber | Germany | Skeleton | 2002 Winter | |
| Ina Kleber | East Germany | Swimming | 1980 Summer | |
| Lawrence Klecatsky | United States | Rowing | 1976 Summer | |
| Karel Klečka | Czechoslovakia | Artistic gymnastics | 1964 Summer | |
| Denise Klecker | Germany | Field hockey | 2000 Summer, 2004 Summer | |
| Janis Klecker | United States | Athletics | 1992 Summer | |
| Joe Klecker | 2020 Summer | |
| Trude Klecker | Austria | Alpine skiing | 1952 Winter, 1956 Winter | |
| Sándor Kleckner [ Wikidata ] | Hungary | Rowing | 1908 Summer | |
| Frithjof Kleen | Germany | Sailing | 2012 Summer | |
| Christian Klees | Shooting | 1996 Summer | |
| Ulrike Klees | West Germany | Swimming | 1972 Summer | |
| Victor Klees | Luxembourg | Water polo | 1928 Summer | |
| Federico Kleger | Argentina | Athletics | 1928 Summer, 1932 Summer | |
| Jolán Kleiber-Kontsek | Hungary | 1964 Summer, 1968 Summer | |
| Carien Kleibeuker | Netherlands | Speed skating | 2006 Winter, 2014 Winter | |
| Benjamin Kleibrink | Germany | Fencing | 2008 Summer, 2012 Summer, 2020 Summer | |
| Peter Kleibrink | West Germany | Handball | 1976 Summer | |
| Shannon Kleibrink | Canada | Curling | 2006 Winter | |
| Nina Kleijweg | Netherlands | Fencing | 1960 Summer | |
| Heinz Kleimeier | West Germany | Water polo | 1968 Summer | |
| Leo Klein Gebbink | Netherlands | Field hockey | 1992 Summer, 1996 Summer | |
| Isaya Klein Ikkink | Athletics | 2024 Summer | |
| Aika Klein | Germany | Short track speed skating | 2002 Winter, 2006 Winter, 2010 Winter | |
| Anne-Laure Klein | France | Rhythmic gymnastics | 2000 Summer | |
| Dominik Klein | Germany | Handball | 2008 Summer | |
| Edwin Klein | West Germany | Athletics | 1972 Summer, 1976 Summer | |
| Gustave Klein | France | Swimming | 1924 Summer, 1928 Summer | |
| Hanna Klein | Germany | Athletics | 2020 Summer, 2024 Summer | |
| Hans-Joachim Klein | Swimming | 1960 Summer, 1964 Summer | |
| Harri Klein | Brazil | Rowing | 1960 Summer, 1968 Summer | |
| Helga Klein | Germany | Athletics | 1952 Summer | |
| Henri Klein | France | 1948 Summer | |
| Henry Klein | Virgin Islands | 1976 Summer | |
| Herbert Klein | Germany | Swimming | 1952 Summer, 1956 Summer | |
| Jackie Klein | United States | Artistic gymnastics | 1956 Summer | |
| Jean Klein | France | Rowing | 1960 Summer | |
| Josef Klein | Czechoslovakia | Athletics | 1936 Summer | |
| Ken Klein Jr. | Virgin Islands | Sailing | 1984 Summer | |
| Ken Klein Sr. | 1972 Summer | |
| Kristin Klein | United States | Volleyball | 1996 Summer | |
| Leslie Klein | Canoe sprint | 1984 Summer | |
| Lisa Klein | Germany | Track cycling, Road cycling | 2020 Summer, 2024 Summer | |
| Luis Klein | Fencing | 2020 Summer | |
| Lukáš Klein | Slovakia | Tennis | 2020 Summer | |
| Manfred Klein | West Germany, Germany | Rowing | 1972 Summer, 1984 Summer, 1988 Summer, 1992 Summer | |
| Martin Klein | Russia | Wrestling | 1912 Summer | |
| Nico Klein | Luxembourg | Shooting | 1968 Summer | |
| Nils Klein [ Wikidata ] | Sweden | 1912 Summer | |
| Noeki Klein | Netherlands | Water polo | 2008 Summer | |
| Peter Klein | West Germany | Athletics | 1984 Summer, 1988 Summer | |
| Pit Klein [ Wikidata ] | Luxembourg | Archery | 2024 Summer | |
| Ralph Klein | Israel | Basketball | 1952 Summer | |
| Robert Klein | Germany | Artistic gymnastics | 1956 Summer | |
| Roelof Klein | Netherlands | Rowing | 1900 Summer | |
| Sascha Klein | Germany | Diving | 2008 Summer, 2012 Summer, 2016 Summer | |
| Tanja Klein | Austria | Road cycling, Track cycling | 1996 Summer | |
| Willi Klein | Germany | Alpine skiing | 1952 Winter | |
| Willy Klein | Luxembourg | Artistic gymnastics | 1936 Summer | |
| Wolfgang Klein | Germany | Athletics | 1964 Summer | |
| Ulrike Kleindl | Austria | 1988 Summer | |
| Joe Kleine | United States | Basketball | 1984 Summer | |
| Megan Kleine | Swimming | 1992 Summer | |
| Piet Kleine | Netherlands | Speed skating | 1976 Winter, 1980 Winter | |
| Theodor Kleine | Germany | Canoe sprint | 1956 Summer | |
| Werner Kleine | Rowing | 1928 Summer | |
| Regina Kleine-Kuhlmann | West Germany | 1984 Summer | |
| Rudolf Kleiner | Switzerland | Speed skating | 1948 Winter | |
| Nadine Kleinert | Germany | Athletics | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Markus Kleinheinz | Austria | Luge | 1998 Winter, 2002 Winter, 2006 Winter | |
| Hans Kleinpeter | Switzerland | Bobsleigh | 1964 Winter | |
| Mark Kleinschmidt | Germany | Rowing | 1996 Summer | |
| Moniek Kleinsman | Netherlands | Speed skating | 2006 Winter | |
| Jan Kleintjes | Art competitions | 1928 Summer, 1936 Summer | |
| Valerie Kleiser | Austria | Bobsleigh | 2018 Winter | |
| Viola Kleiser | 2014 Winter | |
| Josef Kleisl | Germany | Ski jumping | 1952 Winter, 1956 Winter | |
| Roger S. Kleivdal | Norway | Snowboarding | 2010 Winter | |
| Magne Kleiven | Artistic gymnastics | 1952 Summer | |
| Linas Kleiza | Lithuania | Basketball | 2008 Summer, 2012 Summer | |
| Saulius Kleiza | Athletics | 1996 Summer, 2000 Summer | |
| Aleksandra Klejnowska | Poland | Weightlifting | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Hanga Klekner | Hungary | Athletics | 2024 Summer | |
| Adrie Klem | Netherlands | Rowing | 1976 Summer | |
| Harald Klem | Denmark | Artistic gymnastics, Swimming | 1908 Summer | |
| Meindert Klem | Netherlands | Rowing | 2008 Summer, 2012 Summer | |
| Theodor Klem | Norway | 1912 Summer, 1920 Summer | |
| Peter Klemenc | Yugoslavia | Ice hockey | 1984 Winter | |
| Anita Klemenčič [ Wikidata ] | Slovenia | Cross country skiing | 2022 Winter | |
| Blaža Klemenčič | Cycling mountain bike | 2008 Summer, 2012 Summer | |
| Jani Klemenčič | Rowing | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Jože Klemenčič | Yugoslavia | Cross country skiing | 1984 Winter | |
| Polona Klemenčič | Slovenia | Biathlon | 2022 Winter | |
| Valentina Klemenčič | Handball | 2024 Summer | |
| Živa Klemenčič | Biathlon | 2022 Winter | |
| Ivans Klementjevs | Soviet Union, Latvia | Canoe sprint | 1988 Summer, 1992 Summer, 1996 Summer | |
| Jefimijs Klementjevs | Latvia | 1992 Summer, 2000 Summer | |
| Barbora Klementová | Slovakia | Cross country skiing | 2018 Winter, 2022 Winter | |
| Rolf Klementsen | Norway | Shooting | 1952 Summer | |
| Oliver Klemet | Germany | Marathon swimming, Swimming | 2024 Summer | |
| Håvard Klemetsen | Norway | Nordic combined | 2006 Winter, 2014 Winter | |
| Ole Klemetsen | Boxing | 1992 Summer | |
| Maria Klemetz | Finland | Sailing | 2008 Summer | |
| Michael Klemm | Germany | Handball | 1992 Summer | |
| Walther Klemm | Art competitions | 1928 Summer, 1932 Summer | |
| Jens Klemmensen | Denmark | 1932 Summer | |
| Pedro Klempa | Argentina | Alpine skiing | 1964 Winter | |
| Jerzy Klempel | Poland | Handball | 1976 Summer, 1980 Summer | |
| David Klemperer | Germany | Beach volleyball | 2008 Summer | |
| Hugo Klempfner | Czechoslovakia | Water polo | 1924 Summer | |
| Dorota Klencz | Poland | Artistic gymnastics | 1972 Summer | |
| Paul Klenerman | Great Britain | Fencing | 1984 Summer | |
| Ricardo Klenk | Argentina | Alpine skiing | 1980 Winter | |
| Bernd Klenke | East Germany | Sailing | 1980 Summer | |
| Nina Klenovska | Bulgaria | Biathlon | 2006 Winter, 2010 Winter | |
| Andreja Klepač | Slovenia | Tennis | 2012 Summer | |
| Zofia Klepacka | Poland | Sailing | 2004 Summer, 2008 Summer, 2012 Summer, 2020 Summer | |
| Jeffrey Klepacki | United States | Rowing | 1992 Summer, 1996 Summer, 2000 Summer | |
| Maja Klepić | Bosnia and Herzegovina | Alpine skiing | 2010 Winter | |
| Aleksandr Klepikov | Soviet Union | Rowing | 1976 Summer | |
| Vladimir Klepinin | Kazakhstan | Speed skating | 1994 Winter, 1998 Winter | |
| Aikaterini Klepkou | Greece | Swimming | 1996 Summer | |
| Herbert Klepp | Austria | Canoe sprint | 1948 Summer | |
| Katja Klepp | East Germany | Shooting | 1988 Summer | |
| Mart Klepp | Canada | 1988 Summer | |
| Hans Kleppen | Norway | Ski jumping | 1928 Winter | |
| Lars Kleppich | Australia | Sailing | 1992 Summer, 2000 Summer, 2004 Summer | |
| Gerhard Kleppinger | West Germany | Football | 1988 Summer | |
| Carl-Gustaf Klerck | Sweden | Fencing | 1912 Summer | |
| Evgeny Kleshchenko | Russian Olympic Committee | Cycling BMX racing | 2020 Summer | |
| Valeriy Kleshnyov | Soviet Union | Rowing | 1980 Summer | |
| Eberhard Klessen | East Germany | Cross country skiing | 1972 Winter | |
| Grzegorz Kleszcz | Poland | Weightlifting | 2000 Summer, 2004 Summer, 2008 Summer | |
| Michail Kletcherov | Bulgaria | Biathlon | 2010 Winter, 2014 Winter | |
| Valentyn Kletskoy | Ukraine | Rowing | 2012 Summer | |
| Leif Klette | Norway | Fencing | 1952 Summer, 1960 Summer | |
| Decio Klettenberg | Brazil | Rowing | 1936 Summer | |
| Loni Klettl | Canada | Alpine skiing | 1980 Winter | |
| Nikola Kleut | Yugoslavia | Athletics | 1936 Summer | |
| Lucijan Kleva | Rowing | 1964 Summer | |
| Olga Klevakina | Soviet Union | Swimming | 1980 Summer | |
| Elizaveta Klevanovich | Russian Olympic Committee | 2020 Summer | |
| Sergey Klevchenya | Unified Team, Russia | Speed skating | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter | |
| Marcus Kleveland | Norway | Snowboarding | 2018 Winter, 2022 Winter | |
| Stig Kleven | Wrestling | 1988 Summer | |
| Tore Klevstuen | Short track speed skating | 1994 Winter | |
| Sergei Klevtsov | Soviet Union | Field hockey | 1980 Summer | |
| Yevgeny Klevtsov | Road cycling | 1952 Summer, 1960 Summer | |
| Jan Kleyn | Netherlands | Athletics | 1948 Summer | |
| Kacper Klich | Poland | Swimming | 2016 Summer | |
| Uwe Kliche | West Germany | Weightlifting | 1968 Summer, 1972 Summer | |
| Ferenc Klics | Hungary | Athletics | 1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer | |
| Manfred Klieme | Germany | Track cycling | 1960 Summer | |
| Hedi Kliemke [ Wikidata ] | Canoe sprint | 2024 Summer | |
| Hermann Klien | Austria | Artistic gymnastics | 1960 Summer | |
| Cornelia Klier | East Germany | Rowing | 1980 Summer | |
| Johanna Klier | Athletics | 1976 Summer, 1980 Summer | |
| Richard Klier | Czechoslovakia | Shooting | 1924 Summer | |
| Kacem Klifa | Morocco | Artistic gymnastics | 1960 Summer | |
| Dmitry Kliger | Unified Team | Athletics | 1992 Summer | |
| Gideon Kliger | Israel | Sailing | 2004 Summer, 2008 Summer, 2012 Summer | |
| Sofia Kligkopoulou | Greece | Basketball | 2004 Summer | |
| Jos Klijnen | Netherlands | Art competitions | 1924 Summer | |
| Miloš Klika | Bohemia | Fencing | 1912 Summer | |
| Andrea Klikovac | Montenegro | Handball | 2016 Summer, 2020 Summer | |
| Filip Klikovać | Water polo | 2016 Summer | |
| Michael Klim | Australia | Swimming | 1996 Summer, 2000 Summer, 2004 Summer | |
| Romuald Klim | Soviet Union | Athletics | 1964 Summer, 1968 Summer | |
| Aleksander Klima | Poland | Biathlon | 1972 Winter | |
| Josef Klíma | Czechoslovakia | Basketball | 1936 Summer | |
| Ludvík Klíma | Canoe sprint | 1936 Summer, 1948 Summer | |
| Jadwiga Klimaj | Poland | Athletics | 1960 Summer | |
| Anatoliy Klimanov | Soviet Union | Boxing | 1976 Summer | |
| Andrzej Klimaszewski | Poland | Athletics | 1980 Summer | |
| Andrzej Klimaszewski | Canoe sprint | 1980 Summer | |
| Arnošt Klimčík | Czechoslovakia | Handball | 1972 Summer | |
| Piotr Klimczak | Poland | Athletics | 2004 Summer, 2008 Summer | |
| Mariusz Klimczyk | 1980 Summer | |
| Aleksandr Klimenko | Unified Team, Ukraine | 1992 Summer, 1996 Summer | |
| Anatoli Klimenko | Belarus | Shooting | 1996 Summer, 2000 Summer | |
| Margarita Klimenko | Russia | Luge | 1998 Winter, 2002 Winter | |
| Viktor Klimenko | Soviet Union | Artistic gymnastics | 1968 Summer, 1972 Summer | |
| Vlastibor Klimeš | Czechoslovakia | Art competitions | 1948 Summer | |
| Vlastibor Klimeš | Basketball | 1980 Summer | |
| Zuzana Klimešová | Czech Republic | 2004 Summer | |
| Darya Klimina | Kazakhstan | Biathlon | 2014 Winter, 2018 Winter | |
| Jessica Klimkait | Canada | Judo | 2020 Summer | |
| Ingrid Klimke | Germany | Equestrian eventing | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Reiner Klimke | Germany, West Germany | Equestrian eventing, Equestrian dressage | 1960 Summer, 1964 Summer, 1968 Summer, 1976 Summer, 1984 Summer, 1988 Summer | |
| Ilia Klimkin | Russia | Figure skating | 2006 Winter | |
| Jan Klimko | Czechoslovakia | Nordic combined | 1984 Winter, 1988 Winter | |
| Olga Klimko | Soviet Union, Unified Team | Equestrian dressage | 1988 Summer, 1992 Summer | |
| Věra Klimková | Czechoslovakia | Cross country skiing | 1984 Winter, 1988 Winter | |
| Sergiy Klimniuk | Ukraine | Canoe sprint | 2000 Summer | |
| Aleksandr Klimov | Soviet Union, Unified Team | Speed skating | 1988 Winter, 1992 Winter | |
| Alexei Klimov | Russia | Shooting | 2008 Summer, 2012 Summer, 2016 Summer | |
| Evgenii Klimov | Russia, Russian Olympic Committee | Nordic combined, Ski jumping | 2014 Winter, 2018 Winter, 2022 Winter | |
| Evgeny Klimov | Russian Olympic Committee | Curling | 2022 Winter | |
| Fedor Klimov | Russia | Figure skating | 2014 Winter | |
| Grigory Klimov | Soviet Union | Athletics | 1956 Summer, 1960 Summer | |
| Igor Klimov | Kazakhstan | Wrestling | 1996 Summer | |
| Sergey Klimov | Soviet Union | Canoe sprint | 1956 Summer | |
| Sergey Klimov | Russia | Track cycling | 2000 Summer | |
| Viktor Klimov | Soviet Union | Road cycling | 1988 Summer | |
| Yury Klimov | Handball | 1972 Summer, 1976 Summer | |
| Marina Klimova | Soviet Union, Unified Team | Figure skating | 1984 Winter, 1988 Winter, 1992 Winter | |
| Natalya Klimova | Soviet Union | Basketball | 1976 Summer | |
| Andrej Klimovets | Germany | Handball | 2008 Summer | |
| Inta Kļimoviča | Soviet Union | Athletics | 1976 Summer | |
| Tatsiana Klimovich | Belarus, Independent Olympians | Rowing | 2020 Summer, 2024 Summer | |
| Zbigniew Klimowski | Poland | Ski jumping | 1992 Winter | |
| Carol Klimpel | Canada | Swimming | 1984 Summer | |
| Fritz Klimsch | Germany | Art competitions | 1936 Summer | |
| Andrej Klinar | Yugoslavia | Alpine skiing | 1964 Winter, 1968 Winter | |
| Anja Klinar | Slovenia | Swimming | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Ciril Klinar | Yugoslavia | Ice hockey | 1968 Winter | |
| Nikica Klinčarski | Football | 1980 Summer | |
| Byrle Klinck | Canada | Ice hockey | 1956 Winter | |
| Boštjan Kline | Slovenia | Alpine skiing | 2018 Winter, 2022 Winter | |
| Michelle Kline | United States | Speed skating | 1992 Winter, 1994 Winter | |
| Ema Klinec | Slovenia | Ski jumping | 2018 Winter, 2022 Winter | |
| Alix Klineman | United States | Beach volleyball | 2020 Summer | |
| Kajsa Kling | Sweden | Alpine skiing | 2010 Winter, 2014 Winter | |
| Esa Klinga | Finland | Nordic combined | 1964 Winter, 1968 Winter | |
| Hanna Klinga | Sweden | Sailing | 2016 Summer | |
| László Klinga | Hungary | Wrestling | 1972 Summer, 1976 Summer | |
| Carl Klingberg | Sweden | Ice hockey | 2018 Winter, 2022 Winter | |
| Jürgen Klinge | East Germany | Wrestling | 1968 Summer | |
| Manuel Klinge | Germany | Ice hockey | 2010 Winter | |
| Werner Klingelfuss | Switzerland | Canoe sprint | 1936 Summer | |
| Adolphe Klingelhoefer | France | Athletics | 1900 Summer | |
| Dirk Klingenberg | Germany | Water polo | 1996 Summer | |
| Meghan Klingenberg | United States | Football | 2016 Summer | |
| Paul Klingenburg | Germany | Water polo | 1936 Summer | |
| Margrit Klinger | West Germany | Athletics | 1984 Summer | |
| Miroslav Klinger | Czechoslovakia | Artistic gymnastics | 1920 Summer, 1924 Summer | |
| Jan Klingers | Netherlands | Canoe sprint | 1952 Summer | |
| Alfred Klingler | Germany | Handball | 1936 Summer | |
| Kurt Klingler | Switzerland | Shooting | 1968 Summer | |
| Michael Klingler | Liechtenstein | Bobsleigh | 2010 Winter | |
| Petra Klingler | Switzerland | Sport climbing | 2020 Summer | |
| Bernd Klingner | Germany, West Germany | Shooting | 1960 Summer, 1968 Summer, 1972 Summer | |
| Lennart Klingström | Sweden | Canoe sprint | 1948 Summer | |
| Martin Klink | Germany | Swimming | 1964 Summer | |
| Jorinde van Klinken | Netherlands | Athletics | 2020 Summer, 2024 Summer | |
| Rob Klinkhammer | Canada | Ice hockey | 2018 Winter | |
| Dominique Klinnik | France | Bobsleigh | 1992 Winter | |
| Inna Klinova | Kazakhstan | Canoe sprint | 2016 Summer | |
| Jürgen Klinsmann | West Germany | Football | 1988 Summer | |
| Inger Klint | Denmark | Fencing | 1928 Summer, 1932 Summer | |
| John Klintberg | Sweden | Athletics | 1912 Summer | |
| Liudmyla Klipova | Soviet Union | Swimming | 1956 Summer, 1960 Summer | |
| Sergei Klischin | Austria | Judo | 1996 Summer | |
| Darya Klishina | Russia, Russian Olympic Committee | Athletics | 2016 Summer, 2020 Summer | |
| Waldemar Klisiak | Poland | Ice hockey | 1992 Winter | |
| Paweł Klisz | Cross country skiing | 2014 Winter | |
| Wladimir Klitschko | Ukraine | Boxing | 1996 Summer | |
| Lourdes Klitzkie | Guam | Athletics | 1988 Summer | |
| Egor Kliuka | Russia, Russian Olympic Committee | Volleyball | 2016 Summer, 2020 Summer | |
| Kristina Kliukevičiūtė | Lithuania | Rhythmic gymnastics | 1996 Summer | |
| Yuliya Kliukova | Ukraine | Freestyle skiing | 1998 Winter | |
| Kinga Klivinyi | Hungary | Handball | 2024 Summer | |
| Martin Kližan | Slovakia | Tennis | 2012 Summer | |
| Nenad Kljaić | Croatia | Handball | 1996 Summer | |
| Sacha Kljestan | United States | Football | 2008 Summer | |
| Denis Klobučar | Croatia | Cross country skiing | 2002 Winter, 2006 Winter | |
| Tomáš Klobučník | Slovakia | Swimming | 2012 Summer, 2016 Summer | |
| Ewa Kłobukowska | Poland | Athletics | 1964 Summer | |
| Stanisław Klocek | Ice hockey | 1980 Winter, 1984 Winter | |
| Lyubov Klochko | Ukraine | Athletics | 1996 Summer | |
| Yana Klochkova | Swimming | 2000 Summer, 2004 Summer | |
| Edit Klocker | Hungary | 1996 Summer | |
| Karl Klöckner | Germany | Track cycling | 1936 Summer | |
| Lucia Hrivnák Klocová | Slovakia | Athletics | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Andreas Klöden | Germany | Road cycling | 2000 Summer, 2004 Summer | |
| Rudolf Kloeckner | Romania | Alpine skiing, Cross country skiing | 1936 Winter | |
| Chloe Kloezeman | Greece | Softball | 2004 Summer | |
| Petar Klofutar | Yugoslavia | Cross country skiing | 1928 Winter | |
| Josef Kloimstein | Austria | Rowing | 1956 Summer, 1960 Summer, 1964 Summer | |
| Lukáš Klok | Czech Republic | Ice hockey | 2022 Winter | |
| Marko Klok | Netherlands | Volleyball | 1992 Summer, 2004 Summer | |
| Dmitry Klokov | Russia | Weightlifting | 2008 Summer | |
| Neeranuch Klomdee | Thailand | Athletics | 2000 Summer, 2008 Summer | |
| Surin Klomjai | Shooting | 1996 Summer | |
| Birgit Klomp | Germany | Swimming | 1956 Summer | |
| Carmen Klomp-Wearne | Australia | Rowing | 1996 Summer | |
| Cornelis Kloos | Netherlands | Art competitions | 1928 Summer, 1932 Summer, 1936 Summer | |
| Elimar Kloos | Germany | Boxing | 1928 Summer | |
| Dirk van 't Klooster | Netherlands | Baseball | 2000 Summer, 2004 Summer, 2008 Summer | |
| Ton van Klooster | Swimming | 1972 Summer | |
| William Klooster | Ice hockey | 1980 Winter | |
| Maarten Kloosterman | Rowing | 1968 Summer | |
| Frank Klopas | United States | Football | 1988 Summer | |
| Willy Klopfenstein | Switzerland | Ski jumping | 1948 Winter | |
| Goetz Klopfer | United States | Athletics | 1968 Summer, 1972 Summer | |
| Sonya Klopfer | Figure skating | 1952 Winter | |
| Wilhelm Klopfer | Switzerland | Rowing | 1936 Summer | |
| Aleksander Kłopotowski | Poland | Art competitions | 1928 Summer | |
| Andrzej Kłopotowski | Swimming | 1960 Summer | |
| Pieter Kloppenburg | Netherlands | Road cycling | 1920 Summer | |
| Helmut Klöpsch | Germany | Biathlon | 1964 Winter | |
| Karol Kłos | Poland | Volleyball | 2016 Summer | |
| Carl Klose | United States | Rowing | 1920 Summer | |
| Sören Klose | Germany | Athletics | 2024 Summer | |
| Timm Klose | Switzerland | Football | 2012 Summer | |
| Sebastian Kłosiński | Poland | Speed skating | 2018 Winter | |
| Petra Klosová | Czech Republic | Swimming | 2004 Summer, 2008 Summer | |
| Stanisław Kłosowicz | Poland | Road cycling | 1928 Summer | |
| Line Kloster | Norway | Athletics | 2020 Summer, 2024 Summer | |
| Konstanze Klosterhalfen | Germany | 2016 Summer, 2020 Summer | |
| Kerry Klostermann | Canada | Volleyball | 1976 Summer | |
| Lukas Klostermann | Germany | Football | 2016 Summer | |
| Taryn Kloth | United States | Beach volleyball | 2024 Summer | |
| John Klotz | Belgium | Sailing | 1920 Summer, 1924 Summer | |
| Karlheinz Klotz | West Germany | Athletics | 1972 Summer | |
| Siegmar Klotz | Italy | Freestyle skiing | 2018 Winter | |
| Ulrike Klotz | East Germany | Artistic gymnastics | 1988 Summer | |
| Wolfgang Klotz | 1972 Summer, 1976 Summer | |
| Kader Klouchi | Algeria | Athletics | 1992 Summer | |
| Miroslav Klůc | Czechoslovakia | Ice hockey | 1956 Winter | |
| Eliška Klučinová | Czech Republic | Athletics | 2012 Summer, 2016 Summer | |
| Ireneusz Kluczek | Poland | 1964 Summer | |
| Janina Klucznik | Rowing | 1980 Summer | |
| Carolina Klüft | Sweden | Athletics | 2004 Summer, 2008 Summer | |
| Patrik Klüft | 2000 Summer, 2004 Summer | |
| Annette Klug | West Germany | Fencing | 1988 Summer | |
| Chris Klug | United States | Snowboarding | 1998 Winter, 2002 Winter, 2010 Winter | |
| Georgina Klug | Argentina | Beach volleyball | 2016 Summer | |
| Hans Klug | Switzerland | Diving | 1960 Summer | |
| Karl Klug | Germany | Football | 1952 Summer | |
| Anja Kluge | East Germany | Rowing | 1988 Summer | |
| Heinz Kluge | Biathlon | 1968 Winter | |
| Jürgen Kluge | Germany, East Germany | Water polo | 1964 Summer, 1968 Summer | |
| Mike Kluge | Germany | Cycling mountain bike | 1996 Summer | |
| Roger Kluge | Track cycling | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Garrett Klugh | United States | Rowing | 2004 Summer | |
| Harry Klugmann | West Germany | Equestrian eventing | 1972 Summer | |
| Kurt Klühspies | Handball | 1976 Summer | |
| Kim Kluijskens | Netherlands | Softball | 2008 Summer | |
| Katrin Klujber | Hungary | Handball | 2020 Summer, 2024 Summer | |
| Józef Klukowski | Poland | Art competitions | 1932 Summer, 1936 Summer | |
| Józef Klukowski | Swimming | 1968 Summer | |
| Aleksander Klumberg | Estonia | Athletics | 1920 Summer, 1924 Summer | |
| Marius Klumperbeek | Netherlands | Rowing | 1960 Summer, 1964 Summer | |
| Christiane Klumpp | Germany | Rhythmic gymnastics | 1992 Summer | |
| Erwin Klumpp | Switzerland | Water polo | 1948 Summer | |
| Anna Klüpfel | Fencing | 1948 Summer | |
| Rudolf Klupsch | Germany | Athletics | 1936 Summer | |
| Aleksandra Kluś | Poland | Alpine skiing | 2014 Winter | |
| Jana Klusáčková | Czech Republic | Swimming | 2004 Summer, 2008 Summer | |
| Michał Kłusak | Poland | Alpine skiing | 2018 Winter | |
| Hilde Klusenwerth | Germany | Athletics | 1936 Summer | |
| Manfred Kluth | Rowing | 1960 Summer | |
| Felipe Klüver | Uruguay | 2020 Summer | |
| Serhiy Klymentiev | Ukraine | Ice hockey | 2002 Winter | |
| Iryna Klymets | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Katarzyna Kłys | Poland | Judo | 2008 Summer, 2012 Summer, 2016 Summer | |
| Oleksandr Klyuchko | Ukraine | Boxing | 2008 Summer | |
| Marina Klyuchnikova | Soviet Union | Swimming | 1976 Summer | |
| Sergey Klyugin | Russia | Athletics | 2000 Summer | |
| Svetlana Klyuka | 2008 Summer | |
| Svetlana Klyukina | Artistic gymnastics | 2008 Summer | |
| Yury Klyuyev | Soviet Union | Speed skating | 1988 Winter | |
| Ayman Klzie | Syria | Swimming | 2020 Summer | |
| Petr Kment | Czechoslovakia | Wrestling | 1964 Summer, 1968 Summer, 1972 Summer | |
| Stane Kmet | Yugoslavia | Cross country skiing | 1928 Winter | |
| Štefan Kmeťo | Czechoslovakia | Water polo | 1992 Summer | |
| Lajos Kmetykó | Hungary | Artistic gymnastics | 1912 Summer | |
| Kazimierz Kmiecik | Poland | Football | 1972 Summer, 1976 Summer | |
| Astrid van der Knaap | Netherlands | Badminton | 1992 Summer | |
| Johannes Knab | West Germany | Road cycling | 1972 Summer | |
| Ruben Knab | Netherlands | Rowing | 2012 Summer, 2020 Summer, 2024 Summer | |
| Ursula Knab | Germany | Athletics | 1952 Summer | |
| Kerstin Knabe | East Germany | 1980 Summer, 1988 Summer | |
| Morgan Knabe | Canada | Swimming | 2000 Summer, 2004 Summer | |
| Stefan Knabe | West Germany | Sailing | 1988 Summer | |
| Margrit Knabenhans [ Wikidata ] | Switzerland | Swimming | 1952 Summer | |
| Walter Knabenhans | Track cycling | 1928 Summer | |
| Walter Knabenhans | Rowing | 1960 Summer | |
| Alois Knabl | Austria | Triathlon | 2020 Summer, 2024 Summer | |
| Christiane Knacke | East Germany | Swimming | 1980 Summer | |
| Tomaž Knafelj | Slovenia | Snowboarding | 2002 Winter, 2006 Winter | |
| Johann Knahl | Czechoslovakia | Alpine skiing | 1936 Winter | |
| Leon Knap | Yugoslavia | Cross country skiing | 1936 Winter | |
| Wiktoria Knap | Poland | Equestrian eventing | 2024 Summer | |
| Bogusława Knapczyk | Canoe slalom | 1992 Summer, 1996 Summer | |
| Bo Knape | Sweden | Sailing | 1972 Summer | |
| Ulrika Knape | Diving | 1972 Summer, 1976 Summer | |
| Edina Knapek | Hungary | Fencing | 2000 Summer, 2008 Summer, 2016 Summer | |
| Miroslav Knapek | Czechoslovakia | Rowing | 1976 Summer, 1980 Summer | |
| Željko Knapić | Yugoslavia | Athletics | 1980 Summer | |
| Wojciech Knapik | Poland | Shooting | 2004 Summer, 2008 Summer | |
| Renata Knapik-Miazga | Fencing | 2020 Summer, 2024 Summer | |
| Miroslava Knapková | Czech Republic | Rowing | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Lenka Knapová | Czechoslovakia | Figure skating | 1988 Winter | |
| Karin Knapp | Italy | Tennis | 2016 Summer | |
| Kay Knapp | United States | Swimming | 1956 Summer | |
| Lawrence Knapp | Field hockey | 1932 Summer, 1936 Summer | |
| Peter Knapp | Great Britain | Rowing | 1968 Summer | |
| Reinelde Knapp | Austria | Athletics | 1956 Summer | |
| Dirk Knappheide | West Germany, Germany | Modern pentathlon | 1988 Summer, 1992 Summer | |
| Anjuli Knäsche | Germany | Athletics | 2024 Summer | |
| Anna Knauer | Track cycling | 2016 Summer | |
| Bernhard Knauß | Slovenia | Alpine skiing | 1998 Winter | |
| Günther Knauss | West Germany | Ice hockey | 1968 Winter | |
| Hans Knauß | Austria | Alpine skiing | 1994 Winter, 1998 Winter, 2002 Winter | |
| Michael Knauth | Germany | Field hockey | 1992 Summer, 1996 Summer | |
| Hansjörg Knauthe | East Germany | Biathlon | 1968 Winter, 1972 Winter | |
| Artur Knautz | Germany | Handball | 1936 Summer | |
| Servais Knaven | Netherlands | Track cycling, Road cycling | 1992 Summer, 2004 Summer | |
| Tessa Knaven | Rowing | 1996 Summer | |
| Samuel Kňažko | Slovakia | Ice hockey | 2022 Winter | |
| Slavomír Kňazovický | Czechoslovakia, Slovakia | Canoe sprint | 1992 Summer, 1996 Summer, 2000 Summer | |
| Tim Kneale | Great Britain | Shooting | 2016 Summer | |
| Andreas Knebel | East Germany | Athletics | 1980 Summer | |
| František Knebort | Czechoslovakia | Football | 1964 Summer | |
| Bill Knecht | United States | Rowing | 1960 Summer, 1964 Summer | |
| Elvira Knecht | Switzerland | Cross country skiing | 1992 Winter | |
| Émile Knecht | Rowing | 1948 Summer, 1952 Summer | |
| Miroslav Knedla [ Wikidata ] | Czech Republic | Swimming | 2024 Summer | |
| David Kneeland | United States | Athletics | 1904 Summer | |
| Andro Knego | Yugoslavia | Basketball | 1976 Summer, 1980 Summer, 1984 Summer | |
| Sjinkie Knegt | Netherlands | Short track speed skating | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Viktor Kneib | Russia | Luge | 1998 Winter, 2002 Winter, 2006 Winter, 2010 Winter | |
| Eberhard Kneisl | Austria | Alpine skiing | 1948 Winter | |
| Franz Kneissl | Bobsleigh | 1952 Winter | |
| Kristina Knejp | Sweden | Rowing | 1996 Summer | |
| Monika Knejp | 1996 Summer | |
| Scott Kneller | Australia | Freestyle skiing | 2010 Winter, 2014 Winter | |
| Bettina Knells | Germany | Shooting | 1996 Summer | |
| Karel Kněnický | Czechoslovakia | Athletics | 1928 Summer, 1936 Summer | |
| Aly Knepper | Luxembourg | Shooting | 1960 Summer | |
| Émile Knepper | Artistic gymnastics | 1912 Summer | |
| Andrea Kneppers | Netherlands | Swimming | 2016 Summer | |
| Otto Knerr [ Wikidata ] | United States | Artistic gymnastics | 1904 Summer | |
| Karel Knesl | Czechoslovakia | Football | 1964 Summer | |
| Andrew Knewstubb | New Zealand | Rugby sevens | 2020 Summer, 2024 Summer | |
| Rudolf Knez | Yugoslavia | Ice hockey | 1968 Winter, 1972 Winter | |
| Tomislav Knez | Football | 1960 Summer | |
| Bohumil Kněžek | Czechoslovakia | Art competitions | 1936 Summer | |
| Aleksandar Knežević | Serbia and Montenegro | Handball | 2000 Summer | |
| Žarko Knežević | Yugoslavia | Basketball | 1972 Summer | |
| Kellion Knibb | Jamaica | Athletics | 2016 Summer | |
| Taylor Knibb | United States | Triathlon, Road cycling | 2020 Summer, 2024 Summer | |
| Edmond De Knibber | Belgium | Archery | 1920 Summer | |
| Manfred Knickenberg | Germany | Athletics | 1964 Summer | |
| Clarence Knickman | United States | Road cycling | 1984 Summer | |
| Louis Kniep [ Wikidata ] | Artistic gymnastics | 1904 Summer | |
| Alexa Knierim | Figure skating | 2018 Winter, 2022 Winter | |
| Chris Knierim | 2018 Winter | |
| Matthew Knies | Ice hockey | 2022 Winter | |
| Ben Kniest | Netherlands | Water polo | 1960 Summer, 1964 Summer | |
| Jože Knific | Yugoslavia | Cross country skiing | 1948 Winter | |
| Kaitlin Knifton | United States | Rowing | 2024 Summer | |
| Albert Knight | Great Britain | Diving | 1924 Summer, 1928 Summer | |
| Alfred Knight | Weightlifting | 1948 Summer | |
| Andrenette Knight | Jamaica | Athletics | 2024 Summer | |
| Anthony Knight | 1992 Summer | |
| Arthur Knight | Great Britain | Football | 1912 Summer, 1920 Summer | |
| Bianca Knight | United States | Athletics | 2012 Summer | |
| Bill Knight | Great Britain | Boxing | 1972 Summer | |
| Brandon Knight | United States | Baseball | 2008 Summer | |
| Chip Knight | Alpine skiing | 1998 Winter, 2002 Winter, 2006 Winter | |
| Corban Knight | Canada | Ice hockey | 2022 Winter | |
| Daniel Ridgway Knight | United States | Sailing | 1900 Summer | |
| Donald Knight | Canada | Figure skating | 1964 Winter | |
| Frederick Knight [ Wikidata ] | Great Britain | Wrestling | 1908 Summer | |
| Harold Knight | Art competitions | 1928 Summer | |
| Hilary Knight | United States | Ice hockey | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Jessie Knight | Great Britain | Athletics | 2020 Summer, 2024 Summer | |
| Josie Knight | Track cycling | 2020 Summer, 2024 Summer | |
| Justyn Knight | Canada | Athletics | 2020 Summer | |
| Laura Knight | Great Britain | Art competitions | 1928 Summer, 1932 Summer, 1948 Summer | |
| Martin Knight | Rowing | 1984 Summer | |
| Richard Knight | 1960 Summer | |
| Sean Knight | Barbados | Boxing | 1988 Summer | |
| Susan Knight | Australia | Diving | 1960 Summer, 1964 Summer | |
| William Knight | Canada | Volleyball | 1992 Summer | |
| Erriyon Knighton | United States | Athletics | 2020 Summer, 2024 Summer | |
| Margaret Knighton | New Zealand | Equestrian eventing | 1988 Summer | |
| Robert Knights | Great Britain | Water polo | 1956 Summer | |
| Yona Knight-Wisdom | Jamaica | Diving | 2016 Summer, 2020 Summer, 2024 Summer | |
| Rudolf Knijnenburg | Bolivia | Shooting | 2004 Summer, 2016 Summer | |
| Hansrüedi Knill | Switzerland | Athletics | 1964 Summer, 1968 Summer | |
| Nizar Knioua | Tunisia | Basketball | 2012 Summer | |
| Silvester Knipfer | West Germany | Shooting | 1972 Summer | |
| Russell Knipp | United States | Weightlifting | 1968 Summer, 1972 Summer | |
| Sven Knipphals | Germany | Athletics | 2016 Summer | |
| Angelika Knipping | West Germany | Swimming | 1984 Summer | |
| Arjan Knipping | Netherlands | 2020 Summer | |
| Eric Knittel | Germany | Rowing | 2012 Summer | |
| Bernard Knitter | Poland | Wrestling | 1960 Summer, 1964 Summer | |
| Blažena Knittlová | Czechoslovakia | Figure skating | 1948 Winter | |
| Oksana Knizhnik | Ukraine | Artistic gymnastics | 1996 Summer | |
| Iveta Knížková | Czechoslovakia, Czech Republic | Biathlon | 1992 Winter, 1994 Winter | |
| Jennifer Knobbs | Great Britain | Artistic swimming | 2012 Summer | |
| Hanspeter Knobel | Switzerland | Biathlon | 1994 Winter | |
| Jan Felix Knobel | Germany | Athletics | 2012 Summer | |
| Eugen Knoblauch | Switzerland | Canoe sprint | 1936 Summer | |
| Miloš Knobloch | Czechoslovakia | Track cycling | 1924 Summer | |
| Balázs Knoch | Hungary | Short track speed skating | 2002 Winter | |
| Viktor Knoch | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Agnes Knochenhauer | Sweden | Curling | 2018 Winter, 2022 Winter | |
| Günther Knödler | Saar | Fencing | 1952 Summer | |
| Campari Knoepffler | Nicaragua | Swimming | 1976 Summer | |
| Ralph Knoesen | South Africa | Boxing | 1960 Summer | |
| Heinz Knoflach | Austria | Ice hockey | 1968 Winter | |
| Mario Knögler | Shooting | 2000 Summer, 2004 Summer, 2008 Summer | |
| Gary Knoke | Australia | Athletics | 1964 Summer, 1968 Summer, 1972 Summer | |
| Jaap Knol | Netherlands | 1928 Summer | |
| Jacqueline Knol | Softball | 1996 Summer | |
| Monique Knol | Road cycling | 1988 Summer, 1992 Summer | |
| Alfred Knoll | Austria | Field hockey | 1952 Summer | |
| Anabel Knoll | Germany | Triathlon | 2020 Summer | |
| Anton Knoll [ Wikidata ] | Austria | Diving | 2024 Summer | |
| Ernst Knoll | West Germany | Wrestling | 1968 Summer, 1972 Summer | |
| Hermann Knoll | Austria | Field hockey, Ice hockey | 1952 Summer, 1956 Winter, 1964 Winter | |
| Mark Knoll | Canada | Speed skating | 1998 Winter, 2002 Winter | |
| Silke-Beate Knoll | West Germany, Germany | Athletics | 1988 Summer, 1992 Summer, 1996 Summer | |
| Stephan Knoll | Germany | Curling | 2002 Winter | |
| Jolien Knollema [ Wikidata ] | Netherlands | Volleyball | 2024 Summer | |
| Petr Knop | Czech Republic | Cross country skiing | 2018 Winter, 2022 Winter | |
| Béatrice Knopf-Basson | France | Canoe sprint | 1980 Summer, 1984 Summer, 1988 Summer | |
| Georg Knöpfle | Germany | Football | 1928 Summer | |
| Jana Knopová | Czechoslovakia | Artistic gymnastics | 1976 Summer | |
| Arvid Knöppel | Sweden | Shooting | 1908 Summer | |
| Arvid Knöppel | Art competitions | 1932 Summer | |
| Anna Knoroz | Russia | Athletics | 1996 Summer | |
| Juri Knorr | Germany | Handball | 2020 Summer, 2024 Summer | |
| Thomas Knorr | 1996 Summer | |
| Detlef Knorrek | Judo | 1992 Summer, 1996 Summer | |
| Lothar Knörzer | Athletics | 1956 Summer | |
| Angela Knösel | East Germany | Luge | 1968 Winter | |
| Erwin Knosp | West Germany | Wrestling | 1984 Summer | |
| Martin Knosp | 1984 Summer | |
| Ronald Knot | Czech Republic | Ice hockey | 2022 Winter | |
| Jaroslav Knotek | Czechoslovakia | Athletics | 1936 Summer, 1948 Summer | |
| Cinthia Knoth | Brazil | Sailing | 1988 Summer | |
| Francis Knott | Great Britain | Athletics | 1908 Summer | |
| George Knott | Australia | 1948 Summer | |
| John Knott | Great Britain | Shooting | 1948 Summer | |
| Kristina Knott | Philippines | Athletics | 2020 Summer | |
| Sandy Knott | United States | 1964 Summer | |
| Edward Knourek | 1920 Summer | |
| Julian Knowle | Austria | Tennis | 2008 Summer | |
| Kerry Knowler | Australia | Rowing | 2000 Summer | |
| Alison Knowles | Great Britain | 2008 Summer | |
| Andy Knowles | Bahamas | Swimming | 1976 Summer | |
| Bruce Knowles | 1976 Summer | |
| Carl Knowles | United States | Basketball | 1936 Summer | |
| Derrick Knowles | Bahamas | Athletics | 1988 Summer | |
| Durward Knowles | Great Britain, Bahamas | Sailing | 1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer, 1964 Summer, 1968 Summer, 1972 Summer, 1988 Summer | |
| Greg Knowles | New Zealand | 1988 Summer, 1992 Summer | |
| Jeremy Knowles | Bahamas | Swimming | 2000 Summer, 2004 Summer, 2008 Summer | |
| Linda Knowles | Great Britain | Athletics | 1964 Summer | |
| Mark Knowles | Bahamas | Tennis | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Mark Knowles | Australia | Field hockey | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Nat Knowles | Bahamas | Boxing | 1972 Summer | |
| Percy Knowles | Sailing | 1960 Summer, 1964 Summer, 1968 Summer, 1972 Summer | |
| Peter Knowles | Great Britain | Badminton | 1996 Summer, 2000 Summer | |
| Steve Knowlton | United States | Alpine skiing | 1948 Winter | |
| Bronwen Knox | Australia | Water polo | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Debbie Knox | Great Britain | Curling | 2002 Winter, 2006 Winter | |
| Edwin Knox | United States | Water polo | 1948 Summer | |
| Emma Knox | Australia | 2004 Summer, 2008 Summer | |
| Finlay Knox | Canada | Swimming | 2020 Summer, 2024 Summer | |
| Paul Knox | Ice hockey | 1956 Winter | |
| Shane Knox | Australia | Boxing | 1984 Summer | |
| Michelle Knox-Zaloom | United States | Rowing | 1992 Summer, 1996 Summer | |
| Bernard Knubel | Germany | Track cycling | 1896 Summer | |
| Bernhard Knubel | Rowing | 1960 Summer | |
| Mike Knuble | United States | Ice hockey | 2006 Winter | |
| Paul Knuchel | Switzerland | Diving | 1920 Summer | |
| Annan Knudsen | Norway | Rowing, Sailing | 1908 Summer, 1920 Summer | |
| Arne Knudsen | Artistic gymnastics | 1952 Summer | |
| Hans Knudsen | Denmark | Canoe sprint | 1964 Summer, 1968 Summer | |
| Harry Knudsen | Rowing | 1948 Summer | |
| Jeanette Knudsen | Canoe sprint | 1988 Summer, 1992 Summer | |
| Kim Wraae Knudsen | 2008 Summer, 2012 Summer | |
| Kirsten Knudsen | Swimming | 1972 Summer | |
| Knud Leonard Knudsen | Norway | Artistic gymnastics | 1912 Summer | |
| Knut Knudsen | Track cycling, Road cycling | 1968 Summer, 1972 Summer | |
| Lina Almind Knudsen | Denmark | Curling | 2018 Winter | |
| Michael V. Knudsen | Handball | 2012 Summer | |
| Monica Knudsen | Norway | Football | 2000 Summer | |
| Niels Knudsen | Denmark | Art competitions | 1928 Summer | |
| Olaf Knudsen | Norway | Wrestling | 1936 Summer | |
| Poul Knudsen | Denmark | Boxing | 1972 Summer | |
| Yvonne Knudsen | Canoe sprint | 1988 Summer, 1992 Summer | |
| Birger Knudtzon | Norway | Rowing | 1964 Summer | |
| Leif Knudtzon | Modern pentathlon | 1924 Summer | |
| Kerstin Knüpfer | Germany | Handball | 1992 Summer | |
| Rubén Knulst | Argentina | Rowing | 1996 Summer | |
| Edy Knupfer | Switzerland | Art competitions | 1948 Summer | |
| Ruud Knuppe | Netherlands | Canoe sprint | 1960 Summer | |
| Bernd Knuppel | Uruguay | Sailing | 1984 Summer, 1988 Summer | |
| Dominique Knüppel | 2020 Summer | |
| Alain Knuser | Switzerland | Bobsleigh | 2018 Winter | |
| Thomas Knuths | East Germany | Diving | 1980 Summer | |
| Per Knuts | Sweden | Athletics | 1960 Summer | |
| Guro Knutsen Mienna | Norway | Football | 2008 Summer | |
| Espen Knutsen | Ice hockey | 1994 Winter | |
| Marie Knutsen | Football | 2008 Summer | |
| Tormod Knutsen | Nordic combined | 1956 Winter, 1960 Winter, 1964 Winter | |
| Inger Knutsson | Sweden | Athletics | 1972 Summer | |
| Magnus Knutsson | Road cycling | 1984 Summer | |
| Thomas Knutsson | Shooting | 1992 Summer | |
| Viktor Knutsson | 1920 Summer, 1924 Summer | |
| Egill Knutzen | Norway | Fencing | 1936 Summer, 1948 Summer, 1952 Summer | |
| Michel Knuysen | Belgium | Rowing | 1952 Summer, 1956 Summer | |
| Artem Knyazev | Uzbekistan | Figure skating | 2006 Winter | |
| Viktor Knyazev | Soviet Union | Athletics | 1952 Summer | |
| Olga Knyazeva | Fencing | 1976 Summer | |
| Svetlana Knyazeva | Russia | Equestrian dressage | 2000 Summer | |
| Dmitry Knyazhevich | Fencing | 1912 Summer | |
| Hanna Knyazyeva-Minenko | Ukraine, Israel | Athletics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Myhaylo Knysh | Ukraine | 2004 Summer, 2008 Summer | |
| Olha Knysh | Alpine skiing | 2018 Winter | |
| Mantas Knystautas | Lithuania | Wrestling | 2020 Summer, 2024 Summer | |
| William Knyvett | Great Britain | Athletics | 1908 Summer | |
| 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 | |