| Name | Nation | Sport | Games | Notes |
|---|
| Alice Coachman | United States | Athletics | 1948 Summer | |
| Matthew Coad | New Zealand | 1996 Summer | |
| Tess Coady | Australia | Snowboarding | 2022 Winter | |
| Cyril Coaffee | Canada | Athletics | 1920 Summer, 1924 Summer | |
| Allen Coage | United States | Judo | 1976 Summer | |
| Marion Coakes | Great Britain | Equestrian jumping | 1968 Summer | |
| Daniel Coakley | Philippines | Swimming | 2008 Summer | |
| Eugene Coakley | Ireland | Rowing | 2004 Summer | |
| Richard Coakley | 2008 Summer | |
| Ben Coakwell | Canada | Bobsleigh | 2014 Winter, 2018 Winter, 2022 Winter | |
| William Coales | Great Britain | Athletics | 1908 Summer | |
| Pauline Coatanea | France | Handball | 2020 Summer | |
| Roland Coate | United States | Art competitions | 1936 Summer | |
| Charles Coates | Great Britain | Archery | 1908 Summer | |
| Colin Coates | Australia | Speed skating | 1968 Winter, 1972 Winter, 1976 Winter, 1980 Winter, 1984 Winter, 1988 Winter | |
| Dennis Coates | Great Britain | Athletics | 1976 Summer | |
| Diane Coates | 1952 Summer | |
| Georgia Coates | Swimming | 2016 Summer | |
| Joyce Coates | Figure skating | 1956 Winter | |
| Sebastián Coates | Uruguay | Football | 2012 Summer | |
| Beth Coats | United States | Biathlon | 1992 Winter, 1994 Winter | |
| James Coats | Great Britain | Skeleton | 1948 Winter | |
| Mehmet Çoban | Turkey | Wrestling | 1928 Summer, 1936 Summer | |
| Merve Çoban | Karate | 2020 Summer | |
| Elisa Cobañea | Argentina | Athletics | 2000 Summer | |
| Selahattin Çobanoğlu | Turkey | 2004 Summer | |
| Franco Cobas | Spain | Rowing | 1960 Summer | |
| Yariulvis Cobas | Cuba | 2012 Summer, 2024 Summer | |
| Jeff Cobb | Guam | Wrestling | 2004 Summer | |
| Madeleine Cobb | Great Britain | Athletics | 1964 Summer | |
| Richard Cobbing | Freestyle skiing | 1994 Winter | |
| Guilherme Cobbo | Brazil | Athletics | 2012 Summer | |
| Janet Cobbs | United States | Volleyball | 1992 Summer | |
| Brien Cobcroft | Australia | Equestrian eventing | 1964 Summer, 1968 Summer | |
| Annelise Coberger | New Zealand | Alpine skiing | 1992 Winter, 1994 Winter | |
| Miguelina Cobián | Cuba | Athletics | 1964 Summer, 1968 Summer | |
| Michela Cobisi | Italy | Figure skating | 2002 Winter | |
| Donald Cobley | Great Britain | Modern pentathlon | 1956 Summer, 1960 Summer | |
| Ignacio Cobos | Spain | Field hockey | 1984 Summer, 1996 Summer | |
| Emma Coburn | United States | Athletics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Agnese Cocchiere [ Wikidata ] | Italy | Water polo | 2024 Summer | |
| Elisabetta Cocciaretto | Tennis | 2024 Summer | |
| Giovanni Cocco | Weightlifting | 1952 Summer | |
| Costanza Cocconcelli | Swimming | 2024 Summer | |
| Julius Čoček | Czechoslovakia | Equestrian jumping | 1936 Summer | |
| Jean Cochard | France | Athletics | 1964 Summer, 1968 Summer | |
| Jean-Paul Coche | Judo | 1972 Summer, 1976 Summer | |
| Paul Coche | Modern pentathlon | 1928 Summer | |
| Veronica Cochela | Romania | Rowing | 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer | |
| Henri Cochet | France | Tennis | 1924 Summer | |
| Maxim Cochin | Boxing | 1948 Summer | |
| André Cochinal | Diving | 1924 Summer | |
| Hans-Jürgen Cochius | East Germany | Sailing | 1968 Summer | |
| Georges Cochon | France | Boxing | 1920 Summer | |
| Barbara Cochran | United States | Alpine skiing | 1972 Winter | |
| Bob Cochran | 1972 Winter | |
| Commodore Cochran | Athletics | 1924 Summer | |
| Dick Cochran | 1960 Summer | |
| Jimmy Cochran | Alpine skiing | 2006 Winter, 2010 Winter | |
| Lindy Cochran | 1976 Winter | |
| Marilyn Cochran | 1972 Winter | |
| Neil Cochran | Great Britain | Swimming | 1984 Summer, 1988 Summer | |
| Roy Cochran | United States | Athletics | 1948 Summer | |
| Osvaldo Cochrane Filho | Brazil | Water polo | 1964 Summer | |
| Blair Cochrane | Great Britain | Sailing | 1908 Summer | |
| Edith Cochrane | Australia | Canoe sprint | 1956 Summer | |
| Nigel Cochrane | Canada | Sailing | 1988 Summer, 1992 Summer | |
| Ryan Cochrane | Swimming | 2008 Summer, 2012 Summer, 2016 Summer | |
| Ryan Cochrane | Canoe sprint | 2012 Summer, 2016 Summer | |
| Ryan Cochran-Siegle | United States | Alpine skiing | 2018 Winter, 2022 Winter | |
| Alexandru Coci | Romania | Swimming | 2012 Summer | |
| Marius Cocioran | Athletics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Francisc Cociș | Artistic gymnastics | 1952 Summer | |
| Daniela Cociu | Moldova | Canoe sprint | 2020 Summer, 2024 Summer | |
| John Cockbill | Australia | Rowing | 1956 Summer | |
| Karen Cockburn | Canada | Trampolining | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Murray Cockburn | Athletics | 1956 Summer | |
| William Cockburn | Ice hockey | 1932 Winter | |
| Per Cock-Clausen | Denmark | Figure skating | 1948 Winter, 1952 Winter | |
| David Cocker | New Zealand | Fencing | 1984 Summer | |
| Mark Cockerell | United States | Figure skating | 1984 Winter | |
| Ian Cockerline | Canada | Luge | 2006 Winter, 2010 Winter | |
| John Cockett | Great Britain | Field hockey | 1952 Summer, 1956 Summer | |
| Percy Cockings [ Wikidata ] | Wrestling | 1908 Summer, 1912 Summer | |
| Jesse Cockney | Canada | Cross country skiing | 2014 Winter, 2018 Winter | |
| Anna Cockrell | United States | Athletics | 2020 Summer, 2024 Summer | |
| Patricia Cockrem | Australia | Basketball | 1984 Summer | |
| Micaela Cocks | New Zealand | 2008 Summer | |
| Sophie Cocks | Field hockey | 2016 Summer | |
| Arthur Cocksedge | Great Britain | Artistic gymnastics | 1920 Summer | |
| Francisc Cocoș | Romania | Wrestling | 1936 Summer | |
| Roxana Cocoș | Weightlifting | 2008 Summer, 2012 Summer | |
| Samuel Coco-Viloin | France | Athletics | 2008 Summer | |
| Paul Cocuet | Rowing | 1900 Summer | |
| Maria Cocuzza | Italy | Artistic gymnastics | 1988 Summer | |
| Luiz Cocuzzi | Brazil | Cycling mountain bike | 2020 Summer | |
| Andrea Coda | Italy | Football | 2008 Summer | |
| Osvaldo Codaro | Argentina | Water polo | 1948 Summer, 1952 Summer, 1960 Summer | |
| Alice Codato [ Wikidata ] | Italy | Rowing | 2024 Summer | |
| Giovanni Codato [ Wikidata ] | 2024 Summer | |
| Agustín Codera | Spain | Water polo | 1968 Summer | |
| Piero Codia | Italy | Swimming | 2016 Summer | |
| Antonio Codina | Spain | 1964 Summer | |
| Francisco Codina | Field hockey | 1976 Summer | |
| Jesús Codina | Basketball | 1960 Summer, 1968 Summer | |
| Laia Codina | Football | 2024 Summer | |
| Edwin Everett Codman | United States | Art competitions | 1932 Summer | |
| Ilie Codreanu | Romania | Shooting | 1972 Summer | |
| Roman Codreanu | Wrestling | 1976 Summer, 1980 Summer | |
| Giovanni Codrington | Netherlands | Athletics | 2012 Summer, 2016 Summer | |
| Andrew Coe | Canada | Rugby sevens | 2020 Summer | |
| Dan Coe | Romania | Football | 1964 Summer | |
| Des Coe | New Zealand | Shooting | 2000 Summer | |
| Harry Coe | United States | Athletics | 1908 Summer | |
| Sebastian Coe | Great Britain | 1980 Summer, 1984 Summer | |
| Tom Coe | Water polo | 1900 Summer | |
| Wesley Coe | United States | Athletics, Tug of war | 1904 Summer, 1908 Summer | |
| Inge Coeck | Belgium | Canoe sprint | 1988 Summer | |
| Guillaume Coeckelberg | Track cycling | 1908 Summer | |
| Léon Coeckelberg [ Wikidata ] | 1908 Summer | |
| Jonathan Coeffic | France | Rowing | 2004 Summer, 2008 Summer | |
| Aëcio Coelho | Brazil | Modern pentathlon, Equestrian eventing | 1948 Summer | |
| Alberto Coelho | Angola | Boxing | 1980 Summer | |
| Eduarda Coelho | Portugal | Athletics | 1992 Summer, 1996 Summer | |
| Francisco Coelho | Weightlifting | 1984 Summer | |
| Graziane de Jesus Coelho | Brazil | Basketball | 2008 Summer | |
| Ilídio Coelho | Angola | Athletics | 1980 Summer | |
| João Coelho | Portugal | 2024 Summer | |
| Jordan Coelho | France | Swimming | 2016 Summer | |
| Ygor Coelho | Brazil | Badminton | 2016 Summer, 2020 Summer, 2024 Summer | |
| Alfredo Coello | Paraguay | Shooting | 1984 Summer | |
| Gina Coello | Honduras | Athletics | 2000 Summer | |
| Eline Coene | Netherlands | Badminton | 1992 Summer, 1996 Summer | |
| Laura Coenen | United States | Handball | 1988 Summer, 1992 Summer, 1996 Summer | |
| Philippe Coenjaerts | Belgium | Athletics | 1928 Summer | |
| Carl Coerse | Netherlands | Wrestling | 1920 Summer, 1924 Summer | |
| Willem Coertzen | South Africa | Athletics | 2012 Summer, 2016 Summer | |
| Pieter Coetze | Swimming | 2020 Summer, 2024 Summer | |
| Duné Coetzee | 2020 Summer | |
| Jeff Coetzee | Tennis | 2008 Summer | |
| Miranda Coetzee | Athletics | 2024 Summer | |
| Pietie Coetzee | Field hockey | 2000 Summer, 2004 Summer, 2012 Summer | |
| Rivaldo Coetzee | Football | 2016 Summer | |
| Amanda Coetzer | Tennis | 1992 Summer, 1996 Summer, 2000 Summer | |
| Natalie Van Coevorden | Australia | Triathlon | 2024 Summer | |
| Andrzej Cofalik | Poland | Weightlifting | 1992 Summer, 1996 Summer | |
| Sam Coffa | Australia | 1964 Summer | |
| Calvin Coffey | United States | Rowing | 1976 Summer | |
| Leslie Coffey | Australia | Shooting | 1964 Summer | |
| Olivia Coffey | United States | Rowing | 2020 Summer, 2024 Summer | |
| Sam Coffey | Football | 2024 Summer | |
| Ivanon Coffie | Netherlands | Baseball | 2004 Summer | |
| Edmund Coffin | United States | Equestrian eventing | 1976 Summer | |
| Roy Coffin | Field hockey | 1932 Summer | |
| Clyde Coffman | Athletics | 1932 Summer | |
| Joe Cofie | Ghana | Boxing | 1972 Summer | |
| Saúl Cofiño | Spain | Artistic gymnastics | 2000 Summer | |
| Corey Cogdell | United States | Shooting | 2008 Summer, 2012 Summer, 2016 Summer | |
| Joseph Cogels | Belgium | 1920 Summer | |
| Oscar Coggins | Hong Kong | Triathlon | 2020 Summer | |
| Juan Coghen | Spain | Field hockey | 1980 Summer | |
| Mercedes Coghen | 1992 Summer | |
| Eamonn Coghlan | Ireland | Athletics | 1976 Summer, 1980 Summer, 1988 Summer | |
| Peter Coghlan | 2000 Summer | |
| Roxana Cogianu | Romania | Rowing | 2008 Summer, 2012 Summer, 2016 Summer | |
| Ottavio Cogliati | Italy | Road cycling | 1960 Summer | |
| François Cogné | France | Art competitions | 1924 Summer | |
| Robert Cogniaux | Belgium | Archery | 1972 Summer, 1976 Summer, 1980 Summer | |
| Traian Cogut | Romania | Shooting | 1964 Summer | |
| Don Cohan | United States | Sailing | 1972 Summer | |
| Gal Cohen Groumi | Israel | Swimming | 2020 Summer, 2024 Summer | |
| Abram Cohen | United States | Fencing | 1956 Summer | |
| Adva Cohen | Israel | Athletics | 2020 Summer | |
| Avi Cohen | Football | 1976 Summer | |
| Daryl Cohen | Australia | Weightlifting | 1960 Summer | |
| Des Cohen | South Africa | Swimming, Water polo | 1948 Summer, 1952 Summer | |
| Gezi Cohen | Israel | Weightlifting | 1960 Summer | |
| Gil Cohen | Sailing | 2012 Summer, 2016 Summer | |
| Gili Cohen | Judo | 2016 Summer, 2020 Summer | |
| Glen Cohen | Great Britain | Athletics | 1976 Summer, 1980 Summer | |
| Henri Cohen | Belgium | Water polo | 1900 Summer | |
| Herbert Cohen | United States | Fencing | 1964 Summer, 1968 Summer | |
| Irwin Cohen | Judo | 1972 Summer | |
| James Cohen | Great Britain | Athletics | 1928 Summer | |
| Nathan Cohen | New Zealand | Rowing | 2008 Summer, 2012 Summer | |
| Nessa Cohen | United States | Art competitions | 1928 Summer | |
| Richard Cohen | Great Britain | Fencing | 1972 Summer, 1976 Summer, 1984 Summer | |
| Sasha Cohen | United States | Figure skating | 2002 Winter, 2006 Winter | |
| Sión Cóhen | Panama | Wrestling | 1964 Summer | |
| Steve Cohen | United States | Artistic gymnastics | 1968 Summer | |
| Steve Cohen | Judo | 1988 Summer | |
| Teal Cohen [ Wikidata ] | Rowing | 2024 Summer | |
| Tiffany Cohen | Swimming | 1984 Summer | |
| Yoav Cohen | Israel | Sailing | 2020 Summer | |
| Harvey Cohn | United States | Athletics | 1904 Summer, 1908 Summer | |
| Alexander Cohoon | Great Britain | Swimming | 2024 Summer | |
| Robert Cohu | France | Basketball | 1936 Summer | |
| Nicoleta Coica | Moldova | Swimming | 2004 Summer | |
| René Coicaud | France | Fencing | 1956 Summer | |
| Fabrice Coiffic | Mauritius | Athletics | 2012 Summer | |
| Gérard Coignot | France | Swimming | 1956 Summer | |
| Érika Coimbra | Brazil | Volleyball | 2000 Summer, 2004 Summer | |
| Eshyllen Coimbra | Rugby sevens | 2020 Summer | |
| Herlander Coimbra | Angola | Basketball | 1992 Summer, 1996 Summer, 2000 Summer | |
| Gérard Coinçon | France | Football | 1960 Summer | |
| Georges Coindre [ Wikidata ] | Track cycling | 1900 Summer | |
| Eloisa Coiro | Italy | Athletics | 2024 Summer | |
| Octave Coisy | France | Track cycling | 1900 Summer | |
| Danilo Coito | Uruguay | Basketball | 1960 Summer | |
| Cristieana Cojocaru | Romania | Athletics | 1984 Summer | |
| Daniel Cojocaru | 1992 Summer | |
| Doina Cojocaru | Handball | 1976 Summer | |
| Georgeta Cojocaru | Table tennis | 1996 Summer | |
| Lucian Cojocaru | Shooting | 1972 Summer | |
| Denise Cojuangco | Philippines | Equestrian jumping | 1992 Summer, 1996 Summer | |
| Olesea Cojuhari | Moldova | Athletics | 2012 Summer | |
| John Coker | Sierra Leone | Boxing | 1968 Summer | |
| Trevor Coker | New Zealand | Rowing | 1972 Summer, 1976 Summer | |
| Mattia Cola | Italy | Biathlon | 2010 Winter | |
| Philippe Cola | France | Shooting | 1984 Summer, 1988 Summer, 1992 Summer | |
| Massimo Colaci | Italy | Volleyball | 2016 Summer, 2020 Summer | |
| Giuseppe Colacicco | Boxing | 1924 Summer | |
| José Antonio Colado | Spain | Shooting | 2004 Summer | |
| Stefano Colagè | Italy | Road cycling | 1984 Summer | |
| İbrahim Çolak | Turkey | Artistic gymnastics | 2020 Summer, 2024 Summer | |
| LaTasha Colander | United States | Athletics | 2000 Summer, 2004 Summer | |
| Ferdinando Colaninno | Italy | Sailing | 2000 Summer | |
| Henri Colans | Belgium | Weightlifting | 1948 Summer, 1952 Summer | |
| Giuseppe Colantuono | Italy | 1948 Summer | |
| Griffin Colapinto | United States | Surfing | 2024 Summer | |
| Thibault Colard | France | Rowing | 2016 Summer | |
| Mario Colarossi | Italy | Athletics | 1956 Summer | |
| Fabrice Colas | France | Track cycling | 1984 Summer, 1988 Summer | |
| Guilbaut Colas | Freestyle skiing | 2006 Winter, 2010 Winter | |
| Liubal Colás | Cuba | Wrestling | 1996 Summer | |
| Paul Colas | France | Shooting | 1908 Summer, 1912 Summer, 1920 Summer, 1924 Summer | |
| Marius Colau | Football | 1948 Summer | |
| Jean Colbach | Luxembourg | Athletics | 1920 Summer | |
| Daciano Colbachini | Italy | 1912 Summer, 1920 Summer | |
| Walter Colbath | United States | Diving | 1928 Summer | |
| Freya Colbert | Great Britain | Swimming | 2024 Summer | |
| Federico Colbertaldo | Italy | 2008 Summer | |
| Casey Colby | United States | Ski jumping | 1998 Winter | |
| Sonia Colceru | Romania | Volleyball | 1964 Summer | |
| Anne-Marie Colchen | France | Athletics | 1948 Summer | |
| Brendan Cole | Australia | 2012 Summer | |
| Briony Cole | Diving | 2008 Summer | |
| Charlie Cole | United States | Rowing | 2012 Summer, 2016 Summer | |
| Ellie Cole [ Wikidata ] | Australia | Diving | 2024 Summer | |
| Erik Cole | United States | Ice hockey | 2006 Winter | |
| Frank Cole | Great Britain | Basketball | 1948 Summer | |
| Gene Cole | United States | Athletics | 1952 Summer | |
| Israel Cole | Sierra Leone | Boxing | 1984 Summer | |
| Jeremy Cole | Zimbabwe | Shooting | 1980 Summer | |
| Ken Cole | Australia | Basketball | 1964 Summer | |
| Lee Cole | Ireland | Field hockey | 2024 Summer | |
| Lilian Cole | Nigeria | Football | 2008 Summer | |
| Louise Cole | Ireland | Sailing | 1996 Summer | |
| Melanie Cole | Canada | Figure skating | 1988 Winter | |
| Neville Cole | Great Britain | Boxing | 1972 Summer | |
| Roy Cole | Canada | Shooting | 1952 Summer | |
| Stanley Cole | United States | Water polo | 1964 Summer, 1968 Summer, 1972 Summer | |
| Warren Cole | New Zealand | Rowing | 1968 Summer, 1972 Summer | |
| Samson Colebrooke | Bahamas | Athletics | 2020 Summer | |
| Lynn Colella | United States | Swimming | 1972 Summer | |
| Rick Colella | 1972 Summer, 1976 Summer | |
| Aubrey Coleman [ Wikidata ] | Great Britain | Wrestling | 1908 Summer | |
| Christian Coleman | United States | Athletics | 2016 Summer, 2024 Summer | |
| Christopher Coleman | Bobsleigh | 1992 Winter, 1994 Winter | |
| Daniel Coleman | Ghana | Football | 2004 Summer | |
| Eleanor Coleman | United States | Swimming | 1924 Summer | |
| Ellis Coleman | Wrestling | 2012 Summer | |
| George Coleman | Great Britain | Athletics | 1952 Summer, 1956 Summer | |
| Georgia Coleman | United States | Diving | 1928 Summer, 1932 Summer | |
| Glenn Coleman | Art competitions | 1932 Summer | |
| Jacinta Coleman | New Zealand | Road cycling | 2000 Summer | |
| Johannes Coleman | South Africa | Athletics | 1936 Summer, 1948 Summer | |
| Leon Coleman | United States | 1968 Summer | |
| Lionel Coleman | Canada | Road cycling, Track cycling | 1936 Summer | |
| Maria Coleman | Ireland | Sailing | 2000 Summer, 2004 Summer | |
| Mark Coleman | United States | Wrestling | 1992 Summer | |
| Michelle Coleman | Sweden | Swimming | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Nathaniel Coleman | United States | Sport climbing | 2020 Summer | |
| Phil Coleman | Athletics | 1956 Summer, 1960 Summer | |
| Robert Coleman | Great Britain | Sailing | 1920 Summer | |
| William Coleman | United States | Equestrian eventing | 2012 Summer | |
| Zane Coleman | New Zealand | Wrestling | 1984 Summer | |
| Antonius Colenbrander | Netherlands | Equestrian eventing, Equestrian jumping | 1924 Summer, 1928 Summer | |
| Bimbo Coles | United States | Basketball | 1988 Summer | |
| Geoffrey Coles | Great Britain | Shooting | 1908 Summer | |
| Laura Coles | Australia | 2020 Summer | |
| Mildred Coles | Great Britain | Tennis | 1908 Summer | |
| Nicky Coles | New Zealand | Rowing | 2004 Summer, 2008 Summer | |
| Phil Coles | Australia | Canoe sprint | 1960 Summer, 1964 Summer, 1968 Summer | |
| William Coles | Great Britain | Bobsleigh | 1948 Winter | |
| Maggie Coles-Lyster | Canada | Track cycling | 2024 Summer | |
| Chris Coletta | United States | 1992 Summer | |
| Alexandra Coletti | Monaco | Alpine skiing | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Giovanni Battista Coletti | Italy | Fencing | 1976 Summer | |
| David van der Colff | Botswana | Swimming | 2016 Summer | |
| Peter Colfs | Belgium | Art competitions | 1932 Summer | |
| Carol Colgan | Canada | Rowing | 1984 Summer | |
| Gilbert Colgate | United States | Bobsleigh | 1936 Winter | |
| Steve Colgate | Sailing | 1968 Summer | |
| Nádia Colhado | Brazil | Basketball | 2012 Summer, 2016 Summer | |
| Ion Coliban | Romania | Alpine skiing | 1948 Winter, 1952 Winter | |
| Domingo Colín | Mexico | Athletics | 1976 Summer, 1980 Summer | |
| Gérard Colin | France | Ski jumping | 1980 Winter, 1984 Winter | |
| Kathryn Colin | United States | Canoe sprint | 2000 Summer, 2004 Summer | |
| Luc Colin | France | Cross country skiing | 1968 Winter | |
| Marcelino Colín | Mexico | Athletics | 1984 Summer | |
| Pablo Colín | 1968 Summer | |
| Paul Colin | France | Art competitions | 1948 Summer | |
| Philippe Colin | Canoe sprint | 2008 Summer | |
| Richarno Colin | Mauritius | Boxing | 2008 Summer, 2012 Summer, 2020 Summer | |
| Luis Colina | Colombia | Shooting | 1972 Summer | |
| Verónica Colindres | El Salvador | Athletics | 2008 Summer | |
| Alojz Colja | Yugoslavia | Rowing | 1964 Summer | |
| Meredith Colket | United States | Athletics | 1900 Summer | |
| Carles Coll [ Wikidata ] | Spain | Swimming | 2024 Summer | |
| Cata Coll | Football | 2024 Summer | |
| Leandro Coll | Rowing | 1924 Summer | |
| Mickey Coll | Puerto Rico | Basketball | 1972 Summer | |
| Ángel Colla | Argentina | Track cycling | 1992 Summer, 1996 Summer | |
| Alejandro Colla | Sailing | 2004 Summer | |
| Daniel Colla | Volleyball | 1988 Summer | |
| María Carmen Collado | Spain | Swimming | 2000 Summer | |
| Teresita Collado | Guatemala | Athletics | 2000 Summer, 2004 Summer | |
| Dorian Çollaku | Albania | 2004 Summer, 2008 Summer | |
| Emil Collan | Finland | Shooting | 1912 Summer | |
| Jock Collaquo | Hong Kong | Field hockey | 1964 Summer | |
| Henri Collard | Belgium | Track cycling | 1936 Summer | |
| Jean Collard | Art competitions | 1936 Summer | |
| Maxime Collard | France | Equestrian dressage | 2020 Summer | |
| Michelle Collard | Canada | Biathlon | 1998 Winter | |
| Véronique Collard | Belgium | Athletics | 1992 Summer | |
| Christian Collardot | France | 1960 Summer | |
| Olivier Collarini [ Wikidata ] | Italy | Fencing | 1900 Summer | |
| Jean Collas | France | Rugby, Tug of war | 1900 Summer | |
| Enrique Collazo | Puerto Rico | Boxing | 2012 Summer | |
| Rodolfo Collazo | Uruguay | Rowing | 2004 Summer, 2008 Summer, 2012 Summer | |
| William Collazo | Cuba | Athletics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Florence Colle | France | 1988 Summer | |
| Nadir Colledani | Italy | Cycling mountain bike | 2020 Summer | |
| Cecilia Colledge | Great Britain | Figure skating | 1932 Winter, 1936 Winter | |
| Philippe Collet | France | Athletics | 1988 Summer, 1992 Summer | |
| René Collet | Alpine skiing | 1956 Winter | |
| David Collet | Great Britain | Rowing | 1928 Summer | |
| Thibaut Collet | France | Athletics | 2024 Summer | |
| Willy Collet | Belgium | Rowing | 1936 Summer, 1948 Summer | |
| Andrew Collett | Australia | Judo | 2000 Summer, 2004 Summer | |
| Ernie Collett | Canada | Ice hockey | 1924 Winter | |
| Laura Collett | Great Britain | Equestrian eventing | 2020 Summer, 2024 Summer | |
| Wayne Collett | United States | Athletics | 1972 Summer | |
| Tito Collevati | Italy | Artistic gymnastics | 1908 Summer | |
| Jim Colley [ Wikidata ] | Australia | Sailing | 2024 Summer | |
| Robert Colley | New Zealand | Boxing | 1976 Summer | |
| Saruba Colley | The Gambia | Athletics | 2012 Summer | |
| Shay Colley | Canada | Basketball | 2020 Summer, 2024 Summer | |
| Beatrice Colli [ Wikidata ] | Italy | Sport climbing | 2024 Summer | |
| Enrico Colli | Cross country skiing | 1924 Winter | |
| Ilio Colli | Alpine skiing | 1952 Winter | |
| Max Colli | Austria | Rowing | 1936 Summer | |
| Vincenzo Colli | Italy | Cross country skiing | 1924 Winter | |
| Sven Colliander | Sweden | Equestrian eventing, Equestrian dressage | 1928 Summer, 1936 Summer | |
| Renée Colliard | Switzerland | Alpine skiing | 1956 Winter | |
| Roberto Colliard | Mexico | Sailing | 1972 Summer | |
| George Collie | Ireland | Art competitions | 1932 Summer | |
| George Collie | Bahamas | Athletics | 1964 Summer | |
| Latario Collie-Minns | 2016 Summer | |
| Adrian Collier | Great Britain | Canoe sprint | 1988 Summer | |
| Benjamin Collier | New Zealand | Field hockey | 2008 Summer | |
| Dylan Collier | Rugby sevens | 2020 Summer, 2024 Summer | |
| Elise Collier | Australia | Shooting | 2020 Summer | |
| Jeanne Collier | United States | Diving | 1964 Summer | |
| John Collier | Athletics | 1928 Summer | |
| Michael Collier | Sierra Leone | Swimming | 1996 Summer | |
| Napheesa Collier | United States | Basketball | 2020 Summer, 2024 Summer | |
| Raymond Collier | Canada | Rowing | 1988 Summer | |
| Charles Collignon | France | Fencing | 1908 Summer | |
| Jacques Collignon | Swimming | 1956 Summer | |
| Albéric Collin | Belgium | Art competitions | 1920 Summer | |
| André Collin | France | 1912 Summer | |
| Anton Collin | Finland | Road cycling, Cross country skiing | 1924 Summer, 1924 Winter | |
| Gustav Collin [ Wikidata ] | Sweden | Swimming | 1912 Summer | |
| Keith Collin | Great Britain | Diving | 1960 Summer | |
| Philippe Collin | Belgium | Field hockey | 1972 Summer | |
| Romeo Collina | Italy | Water polo | 1980 Summer, 1984 Summer | |
| Andrea Collinelli | Track cycling | 1996 Summer | |
| Belinda Colling | New Zealand | Basketball | 2000 Summer | |
| Wilfried Colling | West Germany | Wrestling | 1988 Summer | |
| Don Collinge | Canada | Fencing | 1936 Summer | |
| Ross Collinge | New Zealand | Rowing | 1968 Summer, 1972 Summer | |
| Raymond Collings | Great Britain | Bobsleigh | 1948 Winter | |
| Maria Consolata Collino | Italy | Fencing | 1972 Summer, 1976 Summer | |
| Chris Collins | Grenada | Boxing | 1984 Summer, 1988 Summer | |
| Christine Collins | United States | Rowing | 2000 Summer | |
| Claire Collins | 2020 Summer, 2024 Summer | |
| Daniel Collins | Australia | Canoe sprint | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| Danielle Collins | United States | Tennis | 2024 Summer | |
| David Collins | Rowing | 1996 Summer | |
| Deitre Collins | Volleyball | 1988 Summer | |
| Doug Collins | Basketball | 1972 Summer | |
| Eoin Collins | Ireland | Tennis | 1988 Summer, 1992 Summer | |
| Frank Collins [ Wikidata ] | Great Britain | Diving | 1908 Summer | |
| Gerald Collins | Canada | Boxing | 1956 Summer | |
| Gerard Collins | Ireland | Canoe slalom | 1972 Summer | |
| Henry Collins | Australia | Boxing | 2000 Summer | |
| Ian Collins | Great Britain | Swimming | 1984 Summer | |
| Jackson Collins | Australia | Canoe sprint | 2024 Summer | |
| John Collins | Great Britain | Rowing | 2016 Summer, 2020 Summer | |
| Killian Collins | Ireland | Sailing | 2004 Summer | |
| Kim Collins | Saint Kitts and Nevis | Athletics | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2016 Summer | |
| Melissa Collins | Canada | Water polo | 2000 Summer, 2004 Summer | |
| Michael Collins | Great Britain | Athletics | 1908 Summer | |
| Michelle Collins | United States | 2000 Summer | |
| Paul Collins | Canada | 1952 Summer | |
| Phillip Collins | Ireland | Track cycling | 1996 Summer | |
| Porter Collins | United States | Rowing | 1996 Summer, 2000 Summer | |
| Robert Collins | Great Britain | 1948 Summer | |
| Shane Collins | New Zealand | Field hockey | 1992 Summer | |
| Stef Collins | Great Britain | Basketball | 2012 Summer | |
| Steve Collins | Canada | Ski jumping | 1980 Winter, 1984 Winter, 1988 Winter | |
| Tiarn Collins | New Zealand | Snowboarding | 2022 Winter | |
| Tim Collins | Bermuda | Equestrian eventing | 2004 Summer | |
| William Collins | Canada | Canoe sprint | 1956 Summer | |
| Simone Collio | Italy | Athletics | 2004 Summer, 2008 Summer, 2012 Summer | |
| Roger Colliot | France | Football | 1952 Summer | |
| Roland Collombin | Switzerland | Alpine skiing | 1972 Winter | |
| Jonathan Collomb-Patton | France | Snowboarding | 1998 Winter, 2002 Winter | |
| Albert Collon | Belgium | Ice hockey | 1928 Winter | |
| Marie Collonvillé | France | Athletics | 2004 Summer, 2008 Summer | |
| Sebastian Colloredo | Italy | Ski jumping | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Pierre Collura | Finland | Sailing | 2008 Summer | |
| Brian Collyer | Canada | Water polo | 1984 Summer | |
| Tiffany Collymore [ Wikidata ] | Grenada | Swimming | 2024 Summer | |
| Gerry Ó Colmáin | Ireland | Boxing | 1948 Summer | |
| Luis Colman | Uruguay | Rowing | 1968 Summer | |
| Roger Colman | Australia | Sailing | 1988 Summer | |
| Néstor Colmenares | Venezuela | Basketball | 2016 Summer | |
| Pierre Colnard | France | Athletics | 1968 Summer | |
| Nando de Colo | Basketball | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Zeno Colò | Italy | Alpine skiing | 1948 Winter, 1952 Winter | |
| Fabricio Coloccini | Argentina | Football | 2004 Summer | |
| Silvian Colodrovschi [ Wikidata ] | Romania | Water polo | 2024 Summer | |
| Dario Cologna | Switzerland | Cross country skiing | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Gianluca Cologna | 2014 Winter | |
| Carlos Coloma Nicolás | Spain | Cycling mountain bike | 2008 Summer, 2012 Summer, 2016 Summer | |
| Santiago Colombatto | Argentina | Football | 2020 Summer | |
| Alain Colombe | France | Canoe slalom | 1972 Summer | |
| Bruna Colombetti-Peroncini | Italy | Fencing | 1956 Summer, 1960 Summer, 1964 Summer, 1968 Summer | |
| Dario Colombi | Bobsleigh | 1952 Winter | |
| Carlos Colombino | Uruguay | Equestrian jumping | 1960 Summer | |
| Andrea Colombo | Italy | Athletics | 2000 Summer | |
| Angelo Colombo | Football | 1988 Summer | |
| Carlo Colombo | Shooting | 1992 Summer, 1996 Summer | |
| Cesare Colombo | Tennis | 1920 Summer | |
| Charlie Colombo | United States | Football | 1948 Summer, 1952 Summer | |
| Elia Colombo [ Wikidata ] | Switzerland | Sailing | 2024 Summer | |
| Filippo Colombo | Cycling mountain bike | 2020 Summer | |
| Francesco Colombo | Italy | Artistic gymnastics | 1996 Summer | |
| Grazia Colombo | Swimming | 1984 Summer | |
| Jürgen Colombo | West Germany | Track cycling | 1972 Summer | |
| Luca Colombo | Italy | Road cycling | 1992 Summer | |
| Luigi Colombo [ Wikidata ] | Track cycling | 1900 Summer | |
| Marco Colombo | Swimming | 1984 Summer | |
| María Colombo | Argentina | Field hockey | 1988 Summer | |
| Maurizio Colombo | Italy | Track cycling | 1984 Summer | |
| Umberto Colombo | Athletics | 1900 Summer | |
| Lucrezia Colombotto Rosso | Golf | 2020 Summer | |
| Jorge Colome | Cuba | Canoe sprint | 1980 Summer | |
| José Colomer | Spain | Field hockey | 1960 Summer, 1964 Summer, 1968 Summer | |
| Juan Colomer | 1976 Summer | |
| Pascal Colomer | Chile | Shooting | 1996 Summer | |
| Raúl Martínez Colomer | Puerto Rico | Swimming | 2012 Summer | |
| Alejandro Colomino [ Wikidata ] | Argentina | Rowing | 2024 Summer | |
| Anthony Colón | Puerto Rico | Athletics | 1972 Summer, 1976 Summer | |
| Clotilde Colón | Boxing | 1948 Summer | |
| Filiberto Colon | Swimming | 1984 Summer | |
| Gloria Colón | Fencing | 1960 Summer | |
| Jacques Colon | Belgium | Shooting | 1976 Summer | |
| Javier Antonio Colón | Puerto Rico | Basketball | 1992 Summer | |
| José Antonio Colon | Boxing | 1972 Summer | |
| José María Colon | Spain | Canoe sprint | 1968 Summer | |
| Manuel Colón | Handball | 2004 Summer | |
| María Caridad Colón | Cuba | Athletics | 1980 Summer | |
| Pedro Colón | Puerto Rico | Sailing | 2000 Summer | |
| Téofilo Colón | Athletics | 1952 Summer | |
| Victor Colon | Artistic gymnastics | 1992 Summer | |
| Gregorio Colonia | Philippines | Weightlifting | 1988 Summer | |
| Nestor Colonia | 2016 Summer | |
| Pinetta Colonna-Gamero | Italy | Art competitions | 1936 Summer | |
| Carolina Colorado Henao | Colombia | Swimming | 2008 Summer, 2012 Summer | |
| Diego Colorado | Athletics | 2016 Summer | |
| José María Colorado | Spain | Shooting | 1992 Summer | |
| Simon Colosimo | Australia | Football | 2000 Summer | |
| Haydée Coloso-Espino | Philippines | Swimming | 1960 Summer | |
| Slobodanka Čolović | Yugoslavia | Athletics | 1988 Summer | |
| Gustave Colpaert | Belgium | Wrestling | 1928 Summer | |
| Alva Colquhoun | Australia | Swimming | 1960 Summer | |
| Nicolas Colsaerts | Belgium | Golf | 2016 Summer | |
| Marie-Angéline Colson | France | Artistic gymnastics | 1992 Summer | |
| Sam Colson | United States | Athletics | 1976 Summer | |
| George Colțea | Romania | Biathlon | 2022 Winter | |
| Franco Colturi | Italy | Alpine skiing | 1992 Winter | |
| Katia Colturi | Short track speed skating | 1994 Winter, 1998 Winter | |
| Luigi Colturi | Alpine skiing | 1994 Winter | |
| Reinaldo Colucci | Brazil | Triathlon | 2008 Summer, 2012 Summer | |
| Dimitri Colupaev | Germany | Swimming | 2012 Summer | |
| Bill Colvin | Canada | Ice hockey | 1956 Winter | |
| David Colvin | Australia | Rowing | 1992 Summer | |
| Lizzie Colvin | Ireland | Field hockey | 2020 Summer | |
| Rodney Colwell | Canada | Shooting | 1992 Summer | |
| Chris Colwill | United States | Diving | 2008 Summer, 2012 Summer | |
| Claire Colwill | Australia | Field hockey | 2024 Summer | |
| Lansana Coly | Senegal | Judo | 1984 Summer, 1988 Summer | |
| Sharon Colyear | Great Britain | Athletics | 1976 Summer, 1984 Summer | |
| Evelyn Colyer | Tennis | 1924 Summer | |
| Geoffrey Colyer | Canoe sprint | 1952 Summer | |
| Renzo Colzi | France | Track cycling | 1956 Summer | |
| Dragoș Coman | Romania | Swimming | 2000 Summer, 2004 Summer, 2008 Summer | |
| Gabriela Coman | Volleyball | 1980 Summer | |
| Ioan Coman | Cross country skiing | 1936 Winter | |
| Jamie Coman | Australia | Equestrian jumping | 2000 Summer | |
| Petre Coman | Romania | Wrestling | 1968 Summer, 1972 Summer, 1976 Summer | |
| Tomas Coman | Ireland | Athletics | 2000 Summer | |
| Gianni Comandini | Italy | Football | 2000 Summer | |
| Nadia Comăneci | Romania | Artistic gymnastics | 1976 Summer, 1980 Summer | |
| Anna Comarella | Italy | Cross country skiing | 2018 Winter, 2022 Winter | |
| Jaume Comas | Spain | Basketball | 2004 Summer | |
| Jorge Comas | Swimming | 1972 Summer, 1976 Summer | |
| Jorge Comas | Argentina | Football | 1988 Summer | |
| Antonio Comaschi | Boxing | 1972 Summer | |
| Rocío Comba | Athletics | 2008 Summer, 2012 Summer, 2016 Summer | |
| Oriol Combarros | Spain | Artistic gymnastics | 2004 Summer | |
| Delphine Combe | France | Athletics | 1996 Summer | |
| Sabrina Comberlato | Italy | Softball | 2000 Summer | |
| René Combes | France | Athletics | 1968 Summer | |
| Bernard Combet | Swimming | 1972 Summer | |
| Gianpiero Combi | Italy | Football | 1928 Summer | |
| Sébastien Combot | France | Canoe slalom | 2016 Summer | |
| Steve Combs | United States | Wrestling | 1968 Summer | |
| Anne-Marie Comeau | Canada | Cross country skiing | 2018 Winter | |
| Denzel Comenentia | Netherlands | Athletics | 2024 Summer | |
| Niall Comerford | Ireland | Rugby sevens | 2024 Summer | |
| Gloria Comerma | Spain | Field hockey | 2008 Summer, 2016 Summer | |
| Camila Comin | Brazil | Artistic gymnastics | 2000 Summer, 2004 Summer | |
| Davide Comini [ Wikidata ] | Italy | Rowing | 2024 Summer | |
| Giuseppe Comini | Fencing | 1956 Summer | |
| Guido Cominotto | Athletics | 1924 Summer, 1928 Summer | |
| Eben Comins | United States | Art competitions | 1932 Summer | |
| William Comins | Athletics | 1924 Summer | |
| Olga Commandeur | Netherlands | 1984 Summer | |
| Adam Commens | Australia | Field hockey | 2000 Summer | |
| Drew Commesso | United States | Ice hockey | 2022 Winter | |
| Peter Commette | Sailing | 1976 Summer | |
| Chris Commons | Australia | Athletics | 1976 Summer | |
| Samuela Comola | Italy | Biathlon | 2022 Winter | |
| Adriana Comolli | Argentina | Swimming | 1968 Summer | |
| Jos Compaan | Netherlands | Rowing | 1980 Summer, 1984 Summer, 1988 Summer | |
| Renzo Compagna | Italy | Fencing | 1924 Summer | |
| Kai Compagner | Netherlands | Rowing | 1992 Summer, 1996 Summer | |
| Deborah Compagnoni | Italy | Alpine skiing | 1992 Winter, 1994 Winter, 1998 Winter | |
| Ottavio Compagnoni | Cross country skiing | 1952 Winter, 1956 Winter, 1960 Winter | |
| Severino Compagnoni | 1948 Winter, 1952 Winter | |
| Megan Compain | New Zealand | Basketball | 2000 Summer, 2004 Summer | |
| Aude Compan | France | Sailing | 2016 Summer | |
| Misleydis Compañy | Cuba | Fencing | 2008 Summer | |
| Benjamin Compaoré | France | Athletics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Rob Compas | Netherlands | Road cycling | 1992 Summer | |
| Tom Compernolle | Belgium | Athletics | 2004 Summer | |
| Jesse Compher | United States | Ice hockey | 2022 Winter | |
| Georg Comploi | Italy | 1992 Winter | |
| Cornelis Compter | Netherlands | Weightlifting | 1928 Summer | |
| Caitlin Compton Gregg | United States | Cross country skiing | 2010 Winter | |
| Joseph Compton | Great Britain | Sailing | 1936 Summer | |
| Jorge Comrie | Panama | Judo | 1976 Summer | |
| Blane Comstock | United States | Ice hockey | 1976 Winter | |
| Claudine le Comte | Belgium | Fencing | 1972 Summer, 1976 Summer | |
| Philippe Comtois | Canada | Diving | 1996 Summer, 2004 Summer | |
| Tom Comyns | Ireland | Athletics | 2000 Summer | |
| Brian Conacher | Canada | Ice hockey | 1964 Winter | |
| Georges Conan | France | Road cycling | 1932 Summer | |
| Frederic Conant | United States | Sailing | 1932 Summer | |
| Giuseppe Conca | Italy | Weightlifting | 1924 Summer, 1928 Summer | |
| Valdenice Conceição | Brazil | Canoe sprint | 2024 Summer | |
| Buly Da Conceição Triste | São Tomé and Príncipe | 2016 Summer, 2020 Summer | |
| Cleiton Conceição | Brazil | Boxing | 2000 Summer | |
| Flávio Conceição | Football | 1996 Summer | |
| Hebert Conceição | Boxing | 2020 Summer | |
| Janina Conceição | Volleyball | 2000 Summer | |
| Jean-Jacques Conceição | Angola | Basketball | 1992 Summer | |
| Jhennifer Conceição | Brazil | Swimming | 2016 Summer | |
| José da Conceição | Athletics | 1952 Summer, 1956 Summer, 1960 Summer | |
| Robson Conceição | Boxing | 2008 Summer, 2012 Summer, 2016 Summer | |
| Rosângela Conceição | Wrestling | 2008 Summer | |
| Emerito Concepcion | Philippines | Shooting | 1992 Summer | |
| Janier Concepción | Cuba | Rowing | 2008 Summer | |
| Javier Concepción | Volleyball | 2016 Summer | |
| Juan Gabriel Concepción | Spain | Athletics | 1996 Summer | |
| Lee Concepcion | Philippines | Swimming | 1988 Summer, 1992 Summer | |
| René Concepcion | 1988 Summer | |
| Jesús Conde | Mexico | Weightlifting | 1972 Summer | |
| María Conde | Spain | Basketball | 2020 Summer, 2024 Summer | |
| Martín Conde | Argentina | Beach volleyball | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Ricardo Conde | Spain | Swimming, Water polo | 1952 Summer | |
| Rodrigo Conde | Rowing | 2024 Summer | |
| Sékou Condé | Guinea | Football | 1968 Summer | |
| Francesco Condemi | Italy | Water polo | 2024 Summer | |
| Kyra Condie | United States | Sport climbing | 2020 Summer | |
| George Conditt IV | Puerto Rico | Basketball | 2024 Summer | |
| Allyn Condon | Great Britain | Athletics, Bobsleigh | 2000 Summer, 2010 Winter | |
| David Condon | Field hockey | 2016 Summer | |
| Jack Condon | South Africa | Tennis | 1924 Summer | |
| John Condon | Great Britain | Boxing | 1908 Summer | |
| Javier Condor | Costa Rica | Judo | 1984 Summer | |
| Aurora Condorelli [ Wikidata ] | Italy | Water polo | 2024 Summer | |
| Santo Condorelli | Canada, Italy | Swimming | 2016 Summer, 2020 Summer | |
| Marco Condori | Bolivia | Athletics | 2000 Summer | |
| Ricardo Condori | 1972 Summer | |
| Gheorghe Condovici | Romania | Artistic gymnastics | 1964 Summer | |
| Dominic Condrau [ Wikidata ] | Switzerland | Rowing | 2024 Summer | |
| Carin Cone | United States | Swimming | 1956 Summer | |
| Mac Cone | Canada | Equestrian jumping | 1996 Summer, 2008 Summer | |
| Antonio Conelli | Italy | Swimming | 1928 Summer | |
| Gary Conelly | United States | 1972 Summer | |
| Muriel Coneo | Colombia | Athletics | 2016 Summer | |
| Vincent Confait | Seychelles | 1980 Summer, 1984 Summer | |
| Diego Confalonieri | Italy | Fencing | 2008 Summer | |
| Rick Yves Confiance | Seychelles | Weightlifting | 2016 Summer | |
| Gerardo Conforti | Italy | Equestrian jumping | 1936 Summer, 1948 Summer | |
| Alessandro Conforto | Modern pentathlon | 1996 Summer | |
| Antonella Confortola | Cross country skiing | 1998 Winter, 2002 Winter, 2006 Winter, 2010 Winter | |
| Silvio Confortola | 1948 Winter | |
| Yuri Confortola | Short track speed skating | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Cong Huanling | China | Rowing | 2004 Summer | |
| Cong Xuedi | Basketball | 1984 Summer, 1988 Summer, 1992 Summer | |
| Cong Yanxia | Handball | 1996 Summer | |
| Cong Yuzhen | Athletics | 1988 Summer | |
| Jack Conger | United States | Swimming | 2016 Summer | |
| Ray Conger | Athletics | 1928 Summer | |
| Pierangelo Congiu | Italy | Canoe sprint | 1972 Summer | |
| Gerlon Congo [ Wikidata ] | Ecuador | Boxing | 2024 Summer | |
| Roy Congreve | Kenya | Shooting | 1956 Summer | |
| Enrique Conill | Cuba | Sailing | 1924 Summer | |
| Jerry Conine | United States | Wrestling | 1964 Summer | |
| Dorian Coninx | France | Triathlon | 2016 Summer, 2020 Summer, 2024 Summer | |
| Maria-Joëlle Conjungo | Central African Republic | Athletics | 2000 Summer, 2004 Summer | |
| Mickaël Conjungo | 1992 Summer, 1996 Summer, 2000 Summer | |
| Burhan Conkeroğlu | Turkey | Wrestling | 1928 Summer | |
| Pearl Conklin | United States | Art competitions | 1932 Summer | |
| Michael Conlan | Ireland | Boxing | 2012 Summer, 2016 Summer | |
| Alyssa Conley | South Africa | Athletics | 2016 Summer | |
| Kim Conley | United States | 2012 Summer, 2016 Summer | |
| Mike Conley Sr. | 1984 Summer, 1992 Summer, 1996 Summer | |
| Phil Conley | 1956 Summer | |
| Paul Conlin | Canada | Ice hockey | 1964 Winter, 1968 Winter | |
| Michelle Conn | Field hockey | 1988 Summer, 1992 Summer | |
| Frank Connah | Great Britain | 1908 Summer | |
| Graeme Connal | Curling | 2010 Winter | |
| Katharine Connal | Athletics | 1936 Summer | |
| Jared Connaughton | Canada | 2008 Summer, 2012 Summer | |
| Flavien Conne | Switzerland | Ice hockey | 2002 Winter, 2006 Winter | |
| Alex Connell | Great Britain | Speed skating | 1956 Winter | |
| Craig Connell | New Zealand | Track cycling | 1988 Summer | |
| Frank Connell | United States | Road cycling | 1932 Summer | |
| Grant Connell | Canada | Tennis | 1988 Summer, 1996 Summer | |
| Ana Paula Henkel | Brazil | Volleyball, Beach volleyball | 1992 Summer, 1996 Summer, 2004 Summer, 2008 Summer | |
| James Connelly | Canada | Ice hockey | 1960 Winter | |
| Kyle Connelly | Luge | 2002 Winter | |
| Tina Connelly | Athletics | 2000 Summer | |
| Bart Conner | United States | Artistic gymnastics | 1976 Summer, 1984 Summer | |
| Dennis Conner | Sailing | 1976 Summer | |
| Frank Conner | Athletics | 1928 Summer, 1932 Summer | |
| Richard Conner | Diving | 1956 Summer | |
| Corey Conners | Canada | Golf | 2020 Summer, 2024 Summer | |
| Paige Conners | Israel | Figure skating | 2018 Winter | |
| Maurice de Conninck | France | Athletics | 1920 Summer, 1924 Summer | |
| Breege Connolly | Ireland | 2016 Summer | |
| David Connolly | Skeleton | 2006 Winter | |
| Ella Connolly | Australia | Athletics | 2024 Summer | |
| Erika Connolly | United States | Swimming | 2020 Summer, 2024 Summer | |
| Garrett Connolly | Ireland | Sailing | 1996 Summer | |
| Hal Connolly | United States | Athletics | 1956 Summer, 1960 Summer, 1964 Summer, 1968 Summer | |
| James Connolly | 1920 Summer, 1924 Summer | |
| James Brendan Connolly | 1896 Summer, 1900 Summer | |
| Lanihei Connolly | Cook Islands | Swimming | 2024 Summer | |
| Linda Connolly | Great Britain | Figure skating | 1972 Winter | |
| Thomas F. Connolly | United States | Artistic gymnastics | 1932 Summer | |
| Diana Connolly-Carew [ Wikidata ] | Ireland | Equestrian jumping | 1968 Summer | |
| Abbey Connor [ Wikidata ] | Australia | Swimming | 2024 Summer | |
| Ben Connor | Great Britain | Athletics | 2020 Summer | |
| David Connor | Australia | Sailing | 1988 Summer | |
| Isabelle Connor | United States | Rhythmic gymnastics | 2020 Summer | |
| James Connor | Australia | Diving | 2012 Summer, 2016 Summer | |
| John Connor | Canada | Football | 1976 Summer | |
| Keith Connor | Great Britain | Athletics | 1980 Summer, 1984 Summer | |
| Maggie Connor | United States | Freestyle skiing | 1992 Winter | |
| Peter Connor | Ireland | Canoe sprint | 1988 Summer | |
| Shaun Connor [ Wikidata ] | Australia | Sailing | 2024 Summer | |
| William Connor | Great Britain | Artistic gymnastics | 1900 Summer | |
| Clive Conolly | Zimbabwe | Shooting | 1984 Summer | |
| Mark Conover | United States | Athletics | 1988 Summer | |
| Sheila Conover | Canoe sprint | 1984 Summer, 1988 Summer, 1992 Summer | |
| Alberto Conrad | Bolivia | Swimming | 1936 Summer | |
| Christian Conrad | Switzerland | Ice hockey | 1956 Winter | |
| Franz Conrad | Luxembourg | Weightlifting | 1936 Summer | |
| Lars Conrad | Germany | Swimming | 2000 Summer, 2004 Summer | |
| Reinaldo Conrad | Brazil | Sailing | 1960 Summer, 1968 Summer, 1972 Summer, 1976 Summer, 1980 Summer | |
| Sam Conrad | Australia | Rowing | 2008 Summer | |
| Sarah Conrad | Canada | Snowboarding | 2006 Winter, 2010 Winter | |
| Tim Conrad | Australia | Rowing | 1976 Summer | |
| André Conrardy | Luxembourg | Canoe sprint | 1960 Summer | |
| Joseph Conrardy | Belgium | Art competitions | 1932 Summer | |
| Jean-Marie Conrath | France | Athletics | 1976 Summer | |
| Georges Conraux | Fencing | 1924 Summer | |
| Anthony Conroy | United States | Ice hockey | 1920 Summer | |
| Craig Conroy | 2006 Winter | |
| James Conroy | Ireland | Archery | 1976 Summer, 1980 Summer | |
| John Conroy | Great Britain | Field hockey | 1952 Summer, 1956 Summer | |
| Jordan Conroy | Ireland | Rugby sevens | 2020 Summer, 2024 Summer | |
| Andrea Consigli | Italy | Football | 2008 Summer | |
| Manuel Consiglieri | Peru | Athletics | 1948 Summer | |
| Douglas Consiglio | Canada | 1988 Summer | |
| Rosaria Console | Italy | 2004 Summer, 2012 Summer | |
| Adolfo Consolini | 1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer | |
| Chiara Consolini | 3x3 basketball | 2020 Summer | |
| Chiara Consonni | Track cycling | 2024 Summer | |
| Luigi Consonni | 1932 Summer | |
| Simone Consonni | 2016 Summer, 2020 Summer, 2024 Summer | |
| George Constable | Great Britain | Athletics | 1928 Summer | |
| Patrick Constable [ Wikidata ] | Australia | Track cycling | 2016 Summer | |
| Christos Constandinidis | Greece | Weightlifting | 1988 Summer | |
| Frank Constandse | Netherlands | Volleyball | 1964 Summer | |
| Michel Constandt | Belgium | Fencing | 1968 Summer | |
| Eugène Constant | France | Rowing | 1924 Summer | |
| Louis Constant [ Wikidata ] | Boxing | 1908 Summer | |
| Nicolas Constant | Artistic gymnastics | 1908 Summer | |
| Constantin von Liechtenstein | Liechtenstein | Alpine skiing | 1948 Winter | |
| Agafia Constantin | Romania | Canoe sprint | 1976 Summer, 1980 Summer, 1984 Summer | |
| Denis Constantin | Mauritius | Badminton | 2000 Summer | |
| Gheorghe Constantin | Romania | Football | 1964 Summer | |
| Ion Constantin | Equestrian jumping | 1952 Summer | |
| Ionel Constantin | Canoe sprint | 1984 Summer | |
| Maria Constantin | Bobsleigh | 2014 Winter, 2018 Winter | |
| Maria Constantin | Alpine skiing | 2022 Winter | |
| Mariana Constantin | Artistic gymnastics | 1976 Summer | |
| Marioara Constantin | Rowing | 1976 Summer | |
| Constantine II of Greece | Greece | Sailing | 1960 Summer | |
| Kyra Constantine | Canada | Athletics | 2020 Summer, 2024 Summer | |
| Maria Constantinescu | Romania | Rowing | 1980 Summer | |
| Gerardo Constantini | Argentina | 1976 Summer | |
| Stefania Constantini | Italy | Curling | 2022 Winter | |
| Gheorghe Constantinide | Romania | Basketball | 1952 Summer | |
| Claude Constantino | Senegal | 1968 Summer | |
| Gabriel Constantino | Brazil | Athletics | 2020 Summer | |
| Valerie Constien | United States | 2020 Summer, 2024 Summer | |
| Pedro Consuegra | Argentina | Water polo | 1960 Summer | |
| Alberto Contador | Spain | Road cycling | 2008 Summer | |
| Victor Contador | Chile | Equestrian jumping | 1984 Summer | |
| Louise Contamine | Belgium | Figure skating | 1936 Winter | |
| Leopoldo Contarbio | Argentina | Basketball | 1948 Summer, 1952 Summer | |
| Rosanna Contardo [ Wikidata ] | Italy | Swimming | 1960 Summer | |
| Paolo Conte Bonin | 2024 Summer | |
| Aïssata Denn Conte | Guinea | Athletics | 2020 Summer | |
| Antonio Conte | Italy | Fencing | 1900 Summer | |
| Facundo Conte | Argentina | Volleyball | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Hugo Conte | 1984 Summer, 1988 Summer, 2000 Summer | |
| Javier Conte | Sailing | 2000 Summer, 2004 Summer, 2008 Summer | |
| Margarida Conte | Brazil | Handball | 2000 Summer | |
| Nicolas Conte | France | Snowboarding | 1998 Winter | |
| Yvonne Conte | Fencing | 1924 Summer | |
| Enzo Contegno | Italy | Shooting | 1976 Summer | |
| Laura Conter | Diving | 1960 Summer | |
| Bill Conterio | United States | Football | 1956 Summer | |
| Luigi Contessi [ Wikidata ] | Italy | Artistic gymnastics | 1920 Summer | |
| Samuel Contesti | Figure skating | 2010 Winter | |
| Alberto Coletti Conti | Shooting | 1924 Summer | |
| Francesca Conti | Water polo | 2004 Summer | |
| Giacomo Conti | Bobsleigh | 1956 Winter | |
| Giovanni Conti [ Wikidata ] | San Marino | Sailing | 1988 Summer | |
| Giulia Conti | Italy | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Leopoldo Conti | Football | 1924 Summer | |
| Luigi Conti | Athletics | 1960 Summer | |
| Tino Conti | Road cycling | 1968 Summer | |
| Pier Angelo Conti Manzini | Rowing | 1968 Summer, 1972 Summer | |
| Alexis Contin | France | Speed skating | 2010 Winter, 2014 Winter, 2018 Winter | |
| Kamil Čontofalský | Slovakia | Football | 2000 Summer | |
| Andrei Contolenco | Romania | Canoe sprint | 1968 Summer | |
| Adolfo Contoli | Italy | Athletics | 1924 Summer | |
| Attilio Conton | 1928 Summer | |
| Theresa Contos | United States | Handball | 1984 Summer | |
| Soli Contractor | India | Sailing | 1972 Summer | |
| Altagracia Contreras | Dominican Republic | Judo | 1992 Summer | |
| Benito Contreras | Mexico | Football | 1928 Summer | |
| Dalia Contreras | Venezuela | Taekwondo | 2004 Summer, 2008 Summer | |
| Edgar Contreras | 2016 Summer | |
| Edickson Contreras | Diving | 2012 Summer | |
| Ernesto Contreras | Argentina | Track cycling, Road cycling | 1960 Summer, 1964 Summer, 1968 Summer | |
| Francisco Contreras | Mexico | Athletics | 1924 Summer | |
| Humberto Contreras | Chile | Football | 1928 Summer | |
| Isabel Contreras | Spain | Canoe sprint | 2020 Summer | |
| Jorge Contreras | Chile | Rowing | 1956 Summer | |
| José Contreras | Cuba | Baseball | 1996 Summer, 2000 Summer | |
| Leonel Contreras | Chile | Football | 1984 Summer | |
| Luis Contreras | Venezuela | Boxing | 1972 Summer | |
| Mario Wilfredo Contreras | El Salvador | Road cycling | 2008 Summer | |
| Nancy Contreras | Mexico | Track cycling | 1996 Summer, 2004 Summer | |
| Pablo Contreras | Chile | Football | 2000 Summer | |
| Ponciano Contreras | Mexico | Wrestling | 1968 Summer | |
| Verónica Contreras [ Wikidata ] | Peru | Volleyball | 1996 Summer | |
| Víctor Contreras | Mexico | Field hockey | 1972 Summer | |
| Víctor Contreras | Chile | Rowing | 1984 Summer | |
| Yeny Contreras | Taekwondo | 2012 Summer | |
| Yidiel Contreras | Spain | Athletics | 2016 Summer | |
| Yuderqui Contreras | Dominican Republic | Weightlifting | 2008 Summer, 2012 Summer, 2016 Summer | |
| Gianfranco Contri | Italy | Road cycling | 1992 Summer | |
| Paride Contri [ Wikidata ] | Art competitions | 1936 Summer | |
| Arturo Conturbia | Switzerland | Athletics | 1928 Summer | |
| Alain Convard | France | Archery | 1972 Summer | |
| Walter Convents | West Germany | Fencing | 1972 Summer | |
| Casey Converse | United States | Swimming | 1976 Summer | |
| Paul Convert [ Wikidata ] | Belgium | Equestrian jumping, Equestrian eventing | 1912 Summer | |
| Aileen Convery | Ireland | Swimming | 1988 Summer | |
| Pat Convery | Water polo | 1924 Summer | |
| Ab Conway | Canada | Athletics | 1936 Summer | |
| Hollis Conway | United States | 1988 Summer, 1992 Summer | |
| Jerome Conway | Canada | Sailing | 1960 Summer | |
| Joanne Conway | Great Britain | Figure skating | 1988 Winter, 1992 Winter | |
| Michael Conway | Canada | Rowing | 1972 Summer | |
| Michelle Conway | Artistic gymnastics | 2000 Summer | |
| Patricia Conway | Great Britain | Archery | 1976 Summer | |
| Phil Conway | Ireland | Athletics | 1972 Summer | |
| Sally Conway | Great Britain | Judo | 2012 Summer, 2016 Summer | |
| Charles Conwell | United States | Boxing | 2016 Summer | |
| Magdy Conyd | Canada | Fencing | 1968 Summer, 1972 Summer | |
| Abraham Conyedo | Italy | Wrestling | 2020 Summer | |
| Ed Coode | Great Britain | Rowing | 2000 Summer, 2004 Summer | |
| Gwynneth Coogan | United States | Athletics | 1992 Summer | |
| Mark Coogan | 1996 Summer | |
| Aaron Cook | Great Britain, Moldova | Taekwondo | 2008 Summer, 2016 Summer | |
| Alice Cook | United States | Figure skating | 1976 Winter | |
| Annelies Cook | Biathlon | 2014 Winter | |
| Arthur Cook | Shooting | 1948 Summer | |
| Bjørn Cook | Norway | Wrestling | 1948 Summer | |
| Chris Cook | Great Britain | Swimming | 2004 Summer, 2008 Summer | |
| Chris Cook | United States | Cross country skiing | 2006 Winter | |
| Chris Cook | Canada | Sailing | 2008 Summer | |
| Christine Cook | Great Britain | Field hockey | 1996 Summer | |
| David Cook | Road cycling | 1992 Summer | |
| Dustin Cook | Canada | Alpine skiing | 2018 Winter | |
| Edward Cook | United States | Athletics | 1908 Summer | |
| Elwood Cook | Football | 1952 Summer | |
| Emily Cook | Freestyle skiing | 2006 Winter, 2010 Winter, 2014 Winter | |
| Eric Cook | South Africa | Sailing | 1992 Summer | |
| Garry Cook | Great Britain | Athletics | 1984 Summer | |
| Gordon Cook | Canada | Sailing | 2008 Summer, 2012 Summer | |
| Jacqui Cook | Rowing | 2004 Summer | |
| James Cook | Australia | Sailing | 1984 Summer | |
| Jason Cook [ Wikidata ] | South Africa | Baseball | 2000 Summer | |
| Joseph Cook [ Wikidata ] | Great Britain | Artistic gymnastics | 1908 Summer | |
| Julie Cook | Field hockey | 1988 Summer | |
| Karl Cook | United States | Equestrian jumping | 2024 Summer | |
| Kassidy Cook | Diving | 2016 Summer, 2024 Summer | |
| Kristina Cook | Great Britain | Equestrian eventing | 2008 Summer, 2012 Summer | |
| Leonard Cook | Australia | Boxing | 1936 Summer | |
| Myrtle Cook | Canada | Athletics | 1928 Summer | |
| Natalie Cook | Australia | Beach volleyball | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Oliver Cook | Great Britain | Rowing | 2020 Summer | |
| Robert Cook | Wrestling | 1928 Summer | |
| Robert Cook | Bermuda | Swimming | 1948 Summer, 1952 Summer | |
| Sarah Cook | Australia | Rowing | 2008 Summer, 2012 Summer | |
| Stacey Cook | United States | Alpine skiing | 2006 Winter, 2010 Winter, 2014 Winter | |
| Steph Cook | Great Britain | Modern pentathlon | 2000 Summer | |
| Summer Rappaport | United States | Triathlon | 2020 Summer | |
| Tamsin Cook | Australia | Swimming | 2016 Summer, 2020 Summer | |
| Theodore Andrea Cook | Great Britain | Art competitions | 1920 Summer | |
| Tony Cook | Australia | Athletics | 1964 Summer | |
| Alan Cooke | Great Britain | Table tennis | 1988 Summer, 1992 Summer | |
| Aoife Cooke | Ireland | Athletics | 2020 Summer | |
| Arnold Cooke | Great Britain | Rowing | 1964 Summer | |
| Baden Cooke | Australia | Road cycling | 2004 Summer | |
| Carl Cooke | United States | Athletics | 1912 Summer | |
| Cecil Cooke | Bahamas | Sailing | 1964 Summer | |
| Edward Cooke | Australasia | Swimming | 1908 Summer | |
| Emma Cooke | United States | Archery | 1904 Summer | |
| Geoff Cooke | Great Britain | Track cycling | 1972 Summer | |
| George Edwin Cooke | United States | Football | 1904 Summer | |
| George Cooke | New Zealand | Rowing | 1932 Summer | |
| John Solomon | 1932 Summer | |
| Gillian Cooke | Great Britain | Bobsleigh | 2010 Winter | |
| Harold Cooke | Field hockey | 1920 Summer | |
| Harold Cooke | Fencing | 1948 Summer, 1952 Summer | |
| Ian Cooke | Australia | Field hockey | 1976 Summer | |
| James Cooke | Singapore | Sailing | 1960 Summer | |
| James Cooke | Great Britain | Modern pentathlon | 2016 Summer, 2020 Summer | |
| John Cooke | United States | Rowing | 1956 Summer | |
| John Cooke | Great Britain | Shooting | 1972 Summer, 1976 Summer, 1984 Summer | |
| Nicole Cooke | Road cycling | 2004 Summer, 2008 Summer, 2012 Summer | |
| Peter Cooke | Kenya | Sailing | 1964 Summer | |
| Rebecca Cooke | Great Britain | Swimming | 2000 Summer, 2004 Summer | |
| Rohan Cooke | New Zealand | Sailing | 1996 Summer | |
| Shaun Cooke | South Africa | Field hockey | 1996 Summer | |
| Simon Cooke | New Zealand | Sailing | 2000 Summer | |
| Thomas Cooke | United States | Football | 1904 Summer | |
| John Cookman | Ice hockey | 1932 Winter | |
| Tepaea Cook-Savage | New Zealand | Rugby sevens | 2024 Summer | |
| Poppy Cooksey | Great Britain | Fencing | 1964 Summer, 1968 Summer, 1972 Summer | |
| Frans Cools | Belgium | Track cycling | 1936 Summer | |
| Jan Cools | Wrestling | 1948 Summer, 1952 Summer | |
| Samantha Cools | Canada | Cycling BMX racing | 2008 Summer | |
| Reid Coolsaet | Athletics | 2012 Summer, 2016 Summer | |
| Nelli Cooman | Netherlands | 1988 Summer, 1992 Summer | |
| Hubert Coomans [ Wikidata ] | Belgium | Canoe sprint | 1948 Summer | |
| Maurice Coomarawel | Sri Lanka | Road cycling | 1960 Summer | |
| Alex Coomber | Great Britain | Skeleton | 2002 Winter | |
| Margaret Coomber | Athletics | 1972 Summer | |
| Alec Coombes | Rugby sevens | 2020 Summer | |
| Heather Coombridge | New Zealand | Swimming | 1972 Summer | |
| Eswort Coombs | Saint Vincent and the Grenadines | Athletics | 1992 Summer, 1996 Summer | |
| Joseph Coombs | Trinidad and Tobago | 1976 Summer, 1980 Summer | |
| Simon Coombs | Australia | Swimming | 1996 Summer | |
| Sven Coomer | Modern pentathlon | 1956 Summer | |
| Penny Coomes | Great Britain | Figure skating | 2010 Winter, 2014 Winter, 2018 Winter | |
| Adam Coon | United States | Wrestling | 2024 Summer | |
| John Coon | Australia | Sailing | 1960 Summer, 1964 Summer | |
| Coone [ Wikidata ] | France | Artistic gymnastics | 1900 Summer | |
| Aisling Cooney | Ireland | Swimming | 2008 Summer | |
| Nick Cooney | Shooting | 1980 Summer | |
| Kyra Cooney-Cross | Australia | Football | 2020 Summer, 2024 Summer | |
| Daily Cooper Gaspar | Cuba | Athletics | 2024 Summer | |
| Abbey Cooper | United States | 2016 Summer | |
| Albert Cooper | Football | 1928 Summer | |
| Alex Cooper [ Wikidata ] | Bermuda | Sailing | 1972 Summer | |
| Alfred Egerton Cooper | Great Britain | Art competitions | 1948 Summer | |
| Andrew Cooper | Australia | Rowing | 1988 Summer, 1992 Summer | |
| Anton Cooper | New Zealand | Cycling mountain bike | 2020 Summer | |
| Arthur Cooper | Trinidad and Tobago | Athletics | 1972 Summer | |
| Audrey Cooper | Great Britain | Beach volleyball | 1996 Summer | |
| Brad Cooper | Australia | Swimming | 1972 Summer | |
| Bradley Cooper | Bahamas | Athletics | 1984 Summer, 1988 Summer | |
| Brent Cooper | New Zealand | Judo | 1988 Summer | |
| Brian Cooper | United States | Ice hockey | 2022 Winter | |
| Charlotte Cooper | Great Britain | Tennis | 1900 Summer | |
| Christin Cooper | United States | Alpine skiing | 1980 Winter, 1984 Winter | |
| Craig Cooper | New Zealand | Badminton | 2008 Summer | |
| David Cooper | Australia | Equestrian jumping | 1996 Summer | |
| Denise Cooper | Canoe sprint | 1992 Summer | |
| Donald Cooper | New Zealand | 1972 Summer, 1976 Summer | |
| Edmund Cooper | Bermuda | Swimming | 1936 Summer | |
| Fred Cooper | Great Britain | Shooting | 1956 Summer | |
| Graham Cooper | Rowing | 1960 Summer | |
| Hannah Cooper | Liberia | Athletics | 2000 Summer | |
| Henry Cooper | Great Britain | Boxing | 1952 Summer | |
| Henry C. Cooper | Australia | 1936 Summer | |
| Isaac Cooper | Swimming | 2020 Summer, 2024 Summer | |
| Jacqui Cooper | Freestyle skiing | 1994 Winter, 1998 Winter, 2006 Winter, 2010 Winter | |
| Janice Cooper | Athletics | 1956 Summer | |
| John Cooper | Great Britain | 1964 Summer, 1968 Summer | |
| Joyce Cooper | Swimming | 1928 Summer, 1932 Summer | |
| Kim Cooper | Australia | Softball | 1996 Summer | |
| Kirk Cooper | Bermuda | Sailing | 1964 Summer, 1968 Summer, 1972 Summer | |
| Linda Cooper | United States | Diving | 1964 Summer | |
| Lynette Cooper | Rhodesia | Swimming | 1960 Summer | |
| Malcolm Cooper | Great Britain | Shooting | 1972 Summer, 1976 Summer, 1984 Summer, 1988 Summer | |
| Matthew Cooper | Rowing | 1968 Summer, 1972 Summer | |
| Melody Cooper | New Zealand | Field hockey | 2012 Summer | |
| Paul Cooper | Hong Kong | Sailing | 1964 Summer, 1968 Summer | |
| Ramone Cooper | Australia | Freestyle skiing | 2010 Winter | |
| Ron Cooper | Great Britain | Boxing | 1948 Summer | |
| Sapphire Cooper | New Zealand | Field hockey | 1992 Summer | |
| Sarah Cooper | Great Britain | Shooting | 1984 Summer, 1988 Summer | |
| Sayon Cooper | Liberia | Athletics | 1996 Summer, 2000 Summer | |
| Susan Cooper | Great Britain | Swimming | 1980 Summer | |
| Theron Cooper | Bahamas | Athletics | 1996 Summer | |
| Todd Cooper | Great Britain | Swimming | 2004 Summer, 2008 Summer | |
| William Cooper | United States | Sailing | 1932 Summer | |
| Cynthia Cooper-Dyke | Basketball | 1988 Summer, 1992 Summer | |
| Ralph Cooperman | Great Britain | Fencing | 1956 Summer, 1960 Summer, 1964 Summer | |
| Anuradha Cooray | Sri Lanka | Athletics | 2004 Summer, 2012 Summer, 2016 Summer | |
| Henri Coosemans | Belgium | Basketball | 1948 Summer, 1952 Summer | |
| Kevin Coote | Australia | Wrestling | 1952 Summer, 1956 Summer | |
| Augustus Cootmans | Belgium | Artistic gymnastics | 1920 Summer | |
| Franci Čop | Yugoslavia | Alpine skiing | 1936 Winter, 1948 Winter | |
| Iztok Čop | Slovenia | Rowing | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer | |
| Milan Čop | Yugoslavia | Football | 1964 Summer | |
| Eileen Coparropa | Panama | Swimming | 1996 Summer, 2000 Summer, 2004 Summer | |
| Haley Cope | United States | 2004 Summer | |
| Karen Cope | Costa Rica | Beach volleyball | 2016 Summer | |
| Bill Copeland | Canada | Sailing | 1952 Summer | |
| Dirk Copeland | United States | Track cycling | 1992 Summer, 1996 Summer | |
| Jim Copeland | Road cycling | 1988 Summer | |
| Katherine Copeland | Great Britain | Rowing | 2012 Summer, 2016 Summer | |
| Leslie Copeland | Fiji | Athletics | 2012 Summer, 2016 Summer | |
| Lillian Copeland | United States | 1928 Summer, 1932 Summer | |
| Alexis Copello | Cuba | 2008 Summer, 2012 Summer | |
| Alfredo Copello | Argentina | Boxing | 1924 Summer | |
| Yasmani Copello | Turkey | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Elizabeth Copes | Argentina | Judo | 2004 Summer | |
| Tomaž Čopi | Slovenia | Sailing | 1996 Summer, 2000 Summer, 2004 Summer | |
| Mirosław Copija | Poland | Ice hockey | 1988 Winter | |
| Pierre-Yves Copin | France | Swimming | 1972 Summer | |
| James Copley | United States | Bobsleigh | 1972 Winter | |
| John Copley | Great Britain | Art competitions | 1948 Summer | |
| Melinda Copp | Canada | Swimming | 1984 Summer | |
| Stephen Copp | Sweden | Snowboarding | 1998 Winter, 2002 Winter | |
| Luigi Coppa | Italy | Artistic gymnastics | 1972 Summer | |
| Robert Coppée | Belgium | Football | 1920 Summer, 1924 Summer | |
| Paul Coppejans | Athletics | 1964 Summer | |
| Harry Coppell | Great Britain | 2020 Summer | |
| Kahleah Copper | United States | Basketball | 2024 Summer | |
| Emil Coppetti | Switzerland | Bobsleigh | 1928 Winter | |
| Erica Coppey | Belgium | Field hockey | 2012 Summer | |
| Pierre Coppieters | Swimming, Water polo | 1928 Summer, 1936 Summer | |
| Marcel Coppin | Luxembourg | Artistic gymnastics | 1952 Summer, 1960 Summer | |
| Walter Coppins | Australia | Track cycling | 1924 Summer | |
| Paul Coppo | United States | Ice hockey | 1964 Winter | |
| Susana Coppo | Argentina | Swimming | 1976 Summer | |
| Steven Coppola | United States | Rowing | 2008 Summer | |
| Andrea Coppolino | Italy | Artistic gymnastics | 2008 Summer | |
| Henri Copponex | Switzerland | Sailing | 1948 Summer, 1952 Summer, 1960 Summer | |
| Clara Copponi | France | Track cycling | 2020 Summer, 2024 Summer | |
| Paul Copu | Romania | Athletics | 1980 Summer | |
| Bryan Coquard | France | Track cycling | 2012 Summer | |
| Henri Coquelin [ Wikidata ] | Fencing | 1900 Summer | |
| Andre Jin Coquillard | South Korea | Rugby sevens | 2020 Summer | |
| Luis Coquis | Peru | Shooting | 1956 Summer | |
| Ayşe Cora | Turkey | Basketball | 2016 Summer | |
| Ramón Cora | Cuba | Rowing | 1948 Summer | |
| Josip Čorak | Yugoslavia | Wrestling | 1972 Summer | |
| Vivian Coralie | Mauritius | Athletics | 1984 Summer | |
| Edwin Coratti | Italy | Snowboarding | 2018 Winter, 2022 Winter | |
| Artúr Coray | Hungary | Athletics | 1900 Summer | |
| Antonella Corazza | Italy | Rowing | 1984 Summer | |
| Juan Antonio Corbalán | Spain | Basketball | 1972 Summer, 1980 Summer, 1984 Summer | |
| Sofia Corban | Romania | Rowing | 1980 Summer, 1984 Summer | |
| Florin Corbeanu | 2000 Summer, 2004 Summer | |
| Caspar Corbeau | Netherlands | Swimming | 2020 Summer, 2024 Summer | |
| Josée Corbeil | Canada | Volleyball | 1996 Summer | |
| Georges Corbel | France | Field hockey | 1968 Summer, 1972 Summer | |
| Laurie Corbelli | United States | Volleyball | 1984 Summer | |
| Vito Corbelli | San Marino | Road cycling | 1960 Summer | |
| María Corbera | Spain | Canoe sprint | 2024 Summer | |
| Jennifer Corbet | United States | Rowing | 1988 Summer | |
| Kaylene Corbett | South Africa | Swimming | 2020 Summer, 2024 Summer | |
| Watty Corbett | Great Britain | Football | 1908 Summer | |
| Alfred Corbiaux | Belgium | Canoe sprint | 1948 Summer | |
| Harold Corbin | United States | Fencing | 1932 Summer | |
| Gregory Corbitt | Australia | Field hockey | 1992 Summer | |
| Ted Corbitt | United States | Athletics | 1952 Summer | |
| Archibald Corble | Great Britain | Fencing | 1912 Summer, 1924 Summer, 1928 Summer | |
| Carol Corbu | Romania | Athletics | 1972 Summer, 1976 Summer | |
| Michael Corby | Great Britain | Field hockey | 1964 Summer, 1972 Summer | |
| Luis Manuel Corchete | Spain | Athletics | 2020 Summer | |
| Ciro Di Corcia | Italy | Boxing | 2000 Summer | |
| Louise Corcoran | New Zealand | Skeleton | 2006 Winter | |
| Madison Corcoran | Ireland | Canoe slalom | 2024 Summer | |
| Michaela Corcoran | 2024 Summer | |
| Mike Corcoran | 1992 Summer, 1996 Summer | |
| Tom Corcoran | United States | Alpine skiing | 1956 Winter, 1960 Winter | |
| Amélie Cordeau | France | Archery | 2024 Summer | |
| Jean-Pierre Cordebois | Canoe sprint | 1968 Summer, 1972 Summer | |
| André Cordeiro | Brazil | Swimming | 1996 Summer | |
| Domingas Cordeiro | Angola | Handball | 1996 Summer, 2000 Summer | |
| Rob Cordemans | Netherlands | Baseball | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Carlos Cordero | Mexico | Athletics | 2008 Summer, 2012 Summer | |
| Domingo Cordero | Puerto Rico | 1988 Summer, 1992 Summer, 1996 Summer | |
| Eduardo Cordero | Chile | Basketball | 1948 Summer, 1952 Summer | |
| Efraín Cordero | El Salvador | Athletics | 1968 Summer | |
| Irma Cordero | Peru | Volleyball | 1968 Summer, 1976 Summer | |
| Burkhard Cordes | Brazil | Sailing | 1968 Summer, 1972 Summer | |
| Kevin Cordes | United States | Swimming | 2016 Summer | |
| Otto Cordes | Germany | Water polo | 1928 Summer, 1932 Summer | |
| Tom Cordes | Netherlands | Road cycling | 1988 Summer | |
| Edera Cordiale | Italy | Athletics | 1948 Summer, 1952 Summer | |
| Karl Cordin | Austria | Alpine skiing | 1972 Winter | |
| Joe Cordina | Great Britain | Boxing | 2016 Summer | |
| Isaïa Cordinier | France | Basketball | 2024 Summer | |
| Stéphane Cordinier | Handball | 1996 Summer | |
| Robert Cordner | Canada | Canoe sprint | 1952 Summer | |
| Alfredo Córdoba | Mexico | Football | 1948 Summer | |
| Arturo Córdoba | Honduras | Athletics | 1968 Summer | |
| Nicolás Córdoba | Argentina | Artistic gymnastics | 2016 Summer | |
| Cordon [ Wikidata ] | France | Equestrian dressage | 1900 Summer | |
| Guy de Cordon [ Wikidata ] | Equestrian jumping | 1900 Summer | |
| Kevin Cordón | Guatemala | Badminton | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Pilar Lucrecia Cordón | Spain | Equestrian jumping | 2016 Summer | |
| Eugène Cordonnier | France | Artistic gymnastics | 1920 Summer, 1924 Summer | |
| Audrey Cordon-Ragot | Road cycling | 2012 Summer, 2016 Summer, 2024 Summer | |
| Delia Córdova | Peru | Volleyball | 1976 Summer | |
| Francisco Córdova | Puerto Rico | Basketball | 1968 Summer | |
| Samuel Córdova | Mexico | Volleyball | 2016 Summer | |
| Sebastián Córdova | Football | 2020 Summer | |
| Constantin Corduneanu | Romania | Wrestling | 1992 Summer, 1996 Summer | |
| Gheorghe Corduneanu | 1996 Summer | |
| Belinda Cordwell | New Zealand | Tennis | 1988 Summer | |
| Fredy Corea [ Wikidata ] | Nicaragua | Baseball | 1996 Summer | |
| Antonio Corell | Spain | Swimming | 1968 Summer, 1972 Summer | |
| Salvador Corelo | Honduras | 1984 Summer | |
| Lorena Corengia | Argentina | Rowing | 1996 Summer | |
| Albert Corey | United States | Athletics | 1904 Summer | |
| Brendan Corey [ Wikidata ] | Australia | Short track speed skating | 2022 Winter | |
| Melissa Corfe | South Africa | Swimming | 2008 Summer | |
| Antonio Corgos | Spain | Athletics | 1980 Summer, 1984 Summer, 1988 Summer | |
| Federico Coria | Argentina | Tennis | 2020 Summer | |
| Borna Ćorić | Croatia | 2016 Summer | |
| Steve Corica | Australia | Football | 1992 Summer, 1996 Summer | |
| Eugenio Corini | Italy | 1992 Summer | |
| Sergio Corino | Spain | 1996 Summer | |
| Jack Cork | Great Britain | 2012 Summer | |
| James Corkery | Canada | Athletics | 1912 Summer | |
| Steve Corkin | New Zealand | Judo | 1992 Summer, 1996 Summer | |
| Jamie Lynn Corkish | United States | Shooting | 2008 Summer, 2012 Summer | |
| Natalie Corless | Canada | Luge | 2022 Winter | |
| Eduardo Corletti | Argentina | Boxing | 1960 Summer | |
| Christian Cormack | Great Britain | Rowing | 2004 Summer | |
| Appie Corman | Netherlands | Boxing | 1948 Summer | |
| Carole Cormenier | France | Shooting | 2020 Summer, 2024 Summer | |
| Daniel Cormier | United States | Wrestling | 2004 Summer | |
| Marie-Huguette Cormier | Canada | Fencing | 1984 Summer, 1988 Summer | |
| Rhéal Cormier | Baseball | 2008 Summer | |
| Jean-François Corminboeuf | Switzerland | Sailing | 1980 Summer | |
| Ethan Cormont | France | Athletics | 2020 Summer | |
| Giovanni Cornacchia | Italy | 1960 Summer, 1964 Summer, 1968 Summer | |
| Giancarlo Cornaggia-Medici | Fencing | 1928 Summer, 1932 Summer, 1936 Summer | |
| José Cornavaca | Nicaragua | Judo | 1976 Summer | |
| Andrei Cornea | Romania | Rowing | 2024 Summer | |
| Ovidiu Cornea | 2004 Summer | |
| Alfredo Cornejo | Chile | Boxing | 1960 Summer | |
| Cristina Cornejo | Peru | Weightlifting | 2008 Summer | |
| Eduardo Cornejo | Chile | Boxing | 1948 Summer | |
| Guillermo Cornejo | Peru | Shooting | 1956 Summer, 1960 Summer, 1964 Summer | |
| Wendy Cornejo | Bolivia | Athletics | 2016 Summer | |
| Petr Cornelie | France | Basketball | 2020 Summer | |
| Joseph Cornelis | Belgium | Boxing | 1936 Summer | |
| Oscar Cornelis | Wrestling | 1920 Summer | |
| Henk Cornelisse | Netherlands | Track cycling | 1964 Summer | |
| Adelinde Cornelissen | Equestrian dressage | 2012 Summer, 2016 Summer | |
| Ko Cornelissen | Boxing | 1924 Summer | |
| Charles Cornelius | India | Field hockey | 1972 Summer | |
| Everton Cornelius | Antigua and Barbuda | Athletics | 1976 Summer | |
| Jacob Cornelius | United States | Rowing | 2012 Summer | |
| Torleiv Corneliussen | Norway | Sailing | 1912 Summer | |
| Judy Cornell | United States | Swimming | 1952 Summer | |
| Sheila Cornell-Douty | Softball | 1996 Summer, 2000 Summer | |
| Émile Cornellie | Belgium | Sailing | 1920 Summer | |
| Florimond Cornellie | 1920 Summer | |
| Sigrid Corneo | Slovenia | Road cycling | 2008 Summer | |
| Harry Corner | Great Britain | Cricket | 1900 Summer | |
| Gaston Cornereau | France | Fencing | 1924 Summer | |
| Jerry Cornes | Great Britain | Athletics | 1932 Summer, 1936 Summer | |
| Alizé Cornet | France | Tennis | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Bruno Cornet | Paraguay | Fencing | 1996 Summer | |
| Cayetano Cornet | Spain | Athletics | 1988 Summer, 1992 Summer | |
| Francis Cornet | Belgium | Shooting | 1968 Summer, 1972 Summer | |
| George Cornet | Great Britain | Water polo | 1908 Summer, 1912 Summer | |
| Lynda Cornet | Netherlands | Rowing | 1984 Summer | |
| Pedro Cornet | Paraguay | Fencing | 1988 Summer | |
| Renato Cornett | Australia | Boxing | 1984 Summer | |
| George Cornetta | United States | Athletics | 1920 Summer | |
| Frédéric Cornette | France | 1992 Summer | |
| Geoffrey Cornewall | Great Britain | Archery | 1908 Summer | |
| Liberto Corney | Uruguay | Boxing | 1924 Summer | |
| Roger Cornforth | Australia | Water polo | 1948 Summer | |
| Iris Corniani | Italy | Swimming | 1976 Summer | |
| Émile Cornic | France | Fencing | 1928 Summer | |
| Sheree Corniel | Puerto Rico | Softball | 1996 Summer | |
| Ruddy Cornielle | Dominican Republic | Athletics | 1984 Summer | |
| Chris Corning | United States | Snowboarding | 2018 Winter, 2022 Winter | |
| Lionel Cornish | Great Britain | Athletics | 1908 Summer | |
| Dominique Cornu | Belgium | Track cycling | 2012 Summer | |
| Jean-Claude Cornu | France | Sailing | 1960 Summer | |
| René Cornu | Swimming | 1948 Summer | |
| Bàrbara Cornudella | Spain | Sailing | 2016 Summer | |
| Serge Cornut | France | Equestrian dressage | 1992 Summer | |
| María Corominas | Spain | Swimming | 1968 Summer | |
| Adriana Corona | Mexico | Triathlon | 2008 Summer | |
| Alessandro Corona | Italy | Rowing | 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer | |
| José de Jesús Corona | Mexico | Football | 2004 Summer, 2012 Summer | |
| Evaristo Coronado | Costa Rica | 1984 Summer | |
| Luis Coronado | Guatemala | Weightlifting | 1992 Summer | |
| Stefany Coronado | Bolivia | Athletics | 2016 Summer | |
| Francisco Coronel | Mexico | Road cycling | 1964 Summer | |
| Mariela Coronel | Argentina | Football | 2008 Summer | |
| Vasile Coroş | Romania | Speed skating | 1980 Winter | |
| Christer Corpi | Sweden | Boxing | 1980 Summer, 1984 Summer | |
| Tom Corr | Ireland | 1984 Summer | |
| Ernesto Corradi | Italy | Modern pentathlon | 1924 Summer | |
| Giuseppe Corradi | Football | 1952 Summer | |
| Gino Corradini | Weightlifting | 1968 Summer | |
| Gian Corrado Gross | Swimming | 1964 Summer | |
| Daniel Corral | Mexico | Artistic gymnastics | 2012 Summer, 2016 Summer, 2020 Summer | |
| Raquel Corral | Spain | Artistic swimming | 2004 Summer, 2008 Summer | |
| Cristóbal Corrales | Honduras | Athletics | 1968 Summer | |
| Manuel Corrales | Spain | Shooting | 1932 Summer | |
| Ramiro Corrales | United States | Football | 2000 Summer | |
| Rodrigo Corrales | Spain | Handball | 2020 Summer, 2024 Summer | |
| Jean-Claude Corre | France | Athletics | 1988 Summer | |
| Alonso Correa | Peru | Surfing | 2024 Summer | |
| Ana Beatriz Corrêa | Brazil | Volleyball | 2020 Summer | |
| Ángel Correa | Argentina | Football | 2016 Summer | |
| Charles Corrêa | Brazil | Canoe slalom | 2016 Summer | |
| Darwin Correa | Uruguay | Canoe sprint | 2004 Summer | |
| Emilio Correa | Cuba | Boxing | 1972 Summer, 1976 Summer | |
| Emilio Correa | 2008 Summer | |
| Fernando Correa | Venezuela | Road cycling | 1984 Summer | |
| Harold Correa | France | Athletics | 2016 Summer | |
| Javier Correa | Argentina | Canoe sprint | 1996 Summer, 2000 Summer, 2004 Summer | |
| Luciano Corrêa | Brazil | Judo | 2008 Summer, 2012 Summer | |
| Luis Correa | Chile | Boxing | 1924 Summer | |
| Matheus Corrêa | Brazil | Athletics | 2020 Summer, 2024 Summer | |
| Miguel Correa | Argentina | Canoe sprint | 2008 Summer, 2012 Summer | |
| Salvador Correa | Bobsleigh | 1948 Winter | |
| Vanina Correa | Football | 2008 Summer | |
| Maritza Corredor | Colombia | Road cycling | 1996 Summer | |
| João Barrento | Portugal | Equestrian jumping | 1948 Summer | |
| Alphonso Correia | Guyana | Weightlifting | 1948 Summer | |
| António Correia | Portugal | Sailing | 1972 Summer, 1984 Summer | |
| Breno Correia | Brazil | Swimming | 2020 Summer, 2024 Summer | |
| Fernando Correia | Portugal | Fencing | 1912 Summer, 1920 Summer | |
| Jean-Luc Correia | France | Rowing | 1972 Summer | |
| José Manuel Correia | Portugal | Water polo | 1952 Summer | |
| Maritza Correia | United States | Swimming | 2004 Summer | |
| Paulo Roberto Correia | Brazil | Athletics | 1980 Summer, 1984 Summer | |
| David Corrente | Canada | Baseball | 2008 Summer | |
| Àlex Corretja | Spain | Tennis | 2000 Summer | |
| Marie Corridon | United States | Swimming | 1948 Summer | |
| Heather Corrie | Canoe slalom | 2008 Summer | |
| James Corrigan | Athletics | 2024 Summer | |
| Alysha Corrigan | Canada | Rugby sevens | 2024 Summer | |
| Kathleen Corrigan | United States | Artistic gymnastics | 1964 Summer | |
| Liam Corrigan | Rowing | 2020 Summer, 2024 Summer | |
| Lisa Corrigan | Australia | Athletics | 2008 Summer | |
| Ross Corrigan | Ireland | Rowing | 2024 Summer | |
| Tania Corrigan | New Zealand | Shooting | 2000 Summer | |
| Susan Corrock | United States | Alpine skiing | 1972 Winter | |
| Dan Corry | Ireland | Equestrian jumping | 1948 Summer | |
| Amerigo Corsanego | Italy | Wrestling | 1920 Summer | |
| Mirko Corsano | Volleyball | 2000 Summer, 2008 Summer | |
| George Corsar | Great Britain | Road cycling | 1912 Summer | |
| Gianni Corsaro | Italy | Athletics | 1948 Summer, 1960 Summer | |
| Adolfo Corsi | Track cycling | 1928 Summer | |
| Cristiana Corsi | Taekwondo | 2000 Summer, 2004 Summer | |
| Robin Corsiglia | Canada | Swimming | 1976 Summer | |
| Claudia Corsini | Italy | Modern pentathlon | 2004 Summer, 2008 Summer | |
| Joe Corso | United States | Wrestling | 1976 Summer | |
| James Corson | Athletics | 1928 Summer | |
| Marilyn Corson | Canada | Swimming | 1968 Summer, 1972 Summer | |
| Shayne Corson | Ice hockey | 1998 Winter | |
| Gail Cort | Rowing | 1976 Summer, 1984 Summer | |
| José Luis Corta | Spain | 1980 Summer | |
| Nadia Cortassa | Italy | Triathlon | 2004 Summer | |
| Francisco Cortés Juncosa | Spain | Field hockey | 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer | |
| Enrique Cortés Pes | Baseball | 1992 Summer | |
| Alain Cortes | France | Modern pentathlon | 1976 Summer, 1980 Summer | |
| Alma Cortes [ Wikidata ] | Mexico | Athletics | 2024 Summer | |
| Federico Cortés | Argentina | Road cycling | 1960 Summer | |
| Félix Cortes | Philippines | Shooting | 1952 Summer | |
| Francisco Cortes | Chile | Alpine skiing | 1960 Winter, 1964 Winter | |
| Gerardo Cortes Sr. | Modern pentathlon | 1956 Summer | |
| Gerardo Cortes Jr. | 1988 Summer | |
| Javier Cortés | Mexico | Football | 2012 Summer | |
| Omar Cortés | Spain | Artistic gymnastics | 2000 Summer | |
| Onix Cortés | Cuba | Judo | 2012 Summer | |
| Peter Cortes | United States | Rowing | 1976 Summer | |
| Ramiro Cortés | Uruguay | Basketball | 1956 Summer | |
| Armando Cortesão | Portugal | Athletics | 1912 Summer | |
| Marisa Cortesi | Switzerland | Equestrian eventing | 2004 Summer | |
| Omer Corteyn | Belgium | Athletics | 1920 Summer | |
| Edgar Cortez | Nicaragua | 2012 Summer | |
| Hernán Cortez | Bolivia | Weightlifting | 1988 Summer | |
| Joana Cortez | Brazil | Tennis | 2000 Summer | |
| Lorenzo Cortez | Philippines | Swimming | 1960 Summer | |
| Antonio Corti | Argentina | Boxing | 1984 Summer | |
| Auguste Corti | Switzerland | Wrestling | 1924 Summer | |
| Mario Cortiello | Italy | Art competitions | 1948 Summer | |
| Hélène Cortin | France | Rowing | 1992 Summer, 1996 Summer | |
| Chus Cortina | Mexico | Alpine skiing | 1992 Winter | |
| Javier Cortina | Cuba | Wrestling | 2012 Summer, 2016 Summer | |
| Manuel Cortina | Mexico | Canoe sprint | 2008 Summer | |
| Oscar Cortínez | Argentina | Athletics | 2000 Summer | |
| Jane Cortis | Australia | Swimming | 1964 Summer | |
| George Cortlever | Netherlands | Swimming, Water polo | 1908 Summer, 1920 Summer | |
| Clodomiro Cortoni | Argentina | Track cycling | 1948 Summer, 1952 Summer | |
| Richard Cortright | United States | 1952 Summer, 1956 Summer, 1960 Summer | |
| Richard Corts | Germany | Athletics | 1928 Summer | |
| Leo Cortsen | Denmark | Wrestling | 1952 Summer | |
| Dora Corty-Mönkemeyer | Germany | Art competitions | 1936 Summer | |
| Jean-Pierre Corval | France | Athletics | 1972 Summer, 1976 Summer | |
| Silvia Corvalán | Argentina | Field hockey | 1996 Summer | |
| Inocenta Corvea | Cuba | Basketball | 1980 Summer | |
| Lucas Corvée | France | Badminton | 2024 Summer | |
| Enzo Corvi | Switzerland | Ice hockey | 2018 Winter, 2022 Winter | |
| André Corvington | Haiti | Fencing | 1900 Summer | |
| Charles B. Cory | United States | Golf | 1904 Summer | |
| George Cosac | Romania | Tennis | 1992 Summer | |
| Jessica Cosby | United States | Athletics | 2008 Summer, 2012 Summer | |
| Andrew Coscoran | Ireland | 2020 Summer, 2024 Summer | |
| Aldo Cosentino | France | Boxing | 1968 Summer, 1972 Summer, 1976 Summer | |
| Antonio Cosentino | Italy | Sailing | 1952 Summer, 1956 Summer, 1960 Summer | |
| Cristina Cosentino | Argentina | Field hockey | 2024 Summer | |
| Egidio Cosentino | Italy | 1952 Summer | |
| Renato Cosentino | Sailing | 1936 Summer, 1948 Summer | |
| Tony Cosey | United States | Athletics | 2000 Summer | |
| Cormic Cosgrove | Football | 1904 Summer | |
| Osman Coşgül | Turkey | Athletics | 1952 Summer | |
| Aleksandar Ćosić | Yugoslavia | 1948 Summer | |
| Krešimir Ćosić | Basketball | 1968 Summer, 1972 Summer, 1976 Summer, 1980 Summer | |
| Miro Ćosić | Bosnia and Herzegovina | Biathlon | 2006 Winter | |
| Zoran Ćosić | Yugoslavia | 1984 Winter, 1992 Winter | |
| Guillermo Cosio | Mexico | Football | 1976 Summer | |
| Claudia Coslovich | Italy | Athletics | 2000 Summer, 2004 Summer | |
| Adrian Cosma | Romania | Handball | 1972 Summer, 1976 Summer, 1980 Summer | |
| Alexandru Cosma | Weightlifting | 1952 Summer | |
| Ion Cosma | Road cycling | 1960 Summer, 1964 Summer | |
| Lilia Cosman | Artistic gymnastics | 2024 Summer | |
| Sampson Cosmas | Nigeria | Weightlifting | 1980 Summer | |
| Jean Cosmat | France | Rowing | 1936 Summer | |
| Massimo Cosmelli | Italy | Basketball | 1968 Summer | |
| Marian Cosmescu | Romania | Modern pentathlon | 1972 Summer | |
| Benoît Cosnefroy | France | Road cycling | 2020 Summer | |
| Charlie Cosnier | Snowboarding | 2002 Winter | |
| Costel Coșniță | Romania | Canoe sprint | 1972 Summer | |
| Carlos del Coso | Spain | Field hockey | 1960 Summer, 1964 Summer, 1968 Summer | |
| Andrea Coss | Australia | Rowing | 1992 Summer | |
| Orlando Cossani | Argentina | Swimming | 1952 Summer | |
| Rose Cossar | Canada | Rhythmic gymnastics | 2012 Summer | |
| Christopher Cosser | South Africa | Sport climbing | 2020 Summer | |
| Agostino Cossia | Italy | Boxing | 1956 Summer | |
| Arantxa Cossío [ Wikidata ] | Mexico | Table tennis | 2024 Summer | |
| José Cossio | Spain | Swimming | 1960 Summer | |
| Francesco Cossu | Italy | Rowing | 1932 Summer | |
| Bruna Alexandre | Brazil | Table tennis | 2024 Summer | |
| Valentina Costa Biondi | Argentina | Field hockey | 2020 Summer | |
| Adrian Costa | Australia | Freestyle skiing | 1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter | |
| Afonso Costa | Portugal | Rowing | 2020 Summer | |
| Afrânio da Costa | Brazil | Shooting | 1920 Summer | |
| Albert Costa | Spain | Tennis | 1996 Summer, 2000 Summer | |
| André Costa | Brazil | Rowing | 1996 Summer | |
| Antoine Costa | France | Artistic gymnastics | 1908 Summer, 1912 Summer | |
| Armando Costa | Angola | Basketball | 2008 Summer | |
| Artur Costa | Portugal | Swimming | 1988 Summer, 1992 Summer | |
| Arturo Costa | Cuba | Shooting | 1968 Summer, 1972 Summer | |
| Bruno De Costa | Canada | 1972 Summer | |
| Calisto da Costa | Independent Olympians | Athletics | 2000 Summer | |
| Carlos Costa | Spain | Tennis | 1996 Summer | |
| Catarina Costa | Portugal | Judo | 2020 Summer, 2024 Summer | |
| Chiara Costa | Senegal | Shooting | 2020 Summer | |
| Cláudia Costa | Brazil | Artistic gymnastics | 1980 Summer | |
| Diogo Costa | Portugal | Sailing | 2020 Summer, 2024 Summer | |
| Eduardo Costa | Mozambique | Athletics | 1980 Summer | |
| Eduardo Costa | Argentina | Judo | 2000 Summer, 2004 Summer, 2008 Summer | |
| Eliani da Costa | Brazil | Volleyball | 1984 Summer, 1988 Summer | |
| Enrico Costa | Italy | Bobsleigh | 1998 Winter | |
| Fernando Costa | Portugal | Swimming | 2004 Summer, 2008 Summer | |
| Francesca Costa | Italy | Artistic gymnastics | 1960 Summer | |
| Francesco Costa | Bobsleigh | 2014 Winter, 2018 Winter | |
| Gareth Costa | South Africa | Rowing | 1996 Summer | |
| Guilherme Costa | Brazil | Swimming, Marathon swimming | 2020 Summer, 2024 Summer | |
| Héctor Costa | Uruguay | Basketball | 1952 Summer, 1956 Summer, 1960 Summer | |
| Joana Costa | Brazil | Athletics | 2016 Summer | |
| João Costa | Portugal | Fencing | 1948 Summer, 1952 Summer | |
| João Costa | Shooting | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| João Costa [ Wikidata ] | Swimming | 2024 Summer | |
| Joaquina Costa | Spain | Canoe sprint | 1992 Summer | |
| Jorge Costa | Portugal | Athletics | 2004 Summer | |
| José da Costa | Brazil | Volleyball | 1964 Summer, 1968 Summer | |
| José Costa | Portugal | Sailing | 2016 Summer, 2020 Summer | |
| José Palhares Costa | Athletics | 1928 Summer | |
| Karla Costa | Brazil | Basketball | 2004 Summer, 2008 Summer, 2012 Summer | |
| Keila Costa | Athletics | 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Lazaro Costa | Cuba | Water polo | 1976 Summer, 1980 Summer | |
| Leonardo Costa | Brazil | Swimming | 2000 Summer | |
| Luís Costa | Angola | Basketball | 2008 Summer | |
| Luis Antonio Costa | Argentina | Field hockey | 1976 Summer | |
| Manuel da Costa | Portugal | Shooting | 1964 Summer | |
| Manuel da Costa | Equestrian jumping | 1988 Summer | |
| Maria da Costa | Brazil | Swimming | 1948 Summer | |
| Maria Fernanda Costa | 2024 Summer | |
| Marlenis Costa | Cuba | Volleyball | 1992 Summer, 1996 Summer, 2000 Summer | |
| Melani Costa | Spain | Swimming | 2008 Summer, 2012 Summer, 2016 Summer | |
| Miguel Costa [ Wikidata ] | Portugal | Sailing | 1996 Summer | |
| Narciso Costa | Brazil | Athletics | 1924 Summer | |
| Nyeme Costa | Volleyball | 2024 Summer | |
| Paul Costa | Australia | Freestyle skiing | 1994 Winter | |
| Pedro Costa | Portugal | Sailing | 2020 Summer | |
| Rayssa Costa | Brazil | Fencing | 2016 Summer | |
| Renata Costa | Football | 2004 Summer, 2008 Summer, 2012 Summer | |
| Ricardo Costa | Portugal | 2004 Summer | |
| Ronaldo da Costa | Brazil | Athletics | 1996 Summer | |
| Rosa Costa | Spain | Artistic swimming | 1984 Summer | |
| Rui Costa | Portugal | Road cycling | 2012 Summer, 2016 Summer, 2024 Summer | |
| Salvador Costa | Spain | Rowing | 1952 Summer | |
| Samuel Costa | Italy | Nordic combined | 2014 Winter, 2022 Winter | |
| Silvia Costa | Cuba | Athletics | 1992 Summer | |
| Susana Costa | Portugal | 2016 Summer | |
| Thalia Costa | Brazil | Rugby sevens | 2020 Summer, 2024 Summer | |
| Thalita Costa | 2020 Summer, 2024 Summer | |
| Venancio Costa | Spain | Volleyball | 1992 Summer | |
| Vítor Costa | Portugal | Athletics | 2000 Summer, 2004 Summer | |
| Walter Costa | Angola | Basketball | 2004 Summer | |
| Tamara Costache | Romania | Swimming | 1988 Summer | |
| Carolina Costagrande | Italy | Volleyball | 2012 Summer | |
| Anna Costalunga | Basketball | 1992 Summer | |
| Costantino Costantini | Art competitions | 1936 Summer | |
| Dino Costantini | Equestrian eventing | 1972 Summer, 1988 Summer | |
| Massimo Costantini | Table tennis | 1988 Summer | |
| Francesco Costantino | Wrestling | 1996 Summer | |
| Salvatore Costantino | Athletics | 1948 Summer | |
| Tommaso Costantino | Fencing | 1920 Summer | |
| Francisco Costanzo | Uruguay | Boxing | 1936 Summer | |
| Francisco Costas | Mexico | Athletics | 1928 Summer | |
| Humberto Costas | Spain | Sailing | 1976 Summer | |
| Juan Costas | 1976 Summer, 1988 Summer | |
| Chiara Costazza | Italy | Alpine skiing | 2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter | |
| Alin Coste | Romania | Swimming | 2016 Summer | |
| Arturo Coste | Mexico | Water polo | 1952 Summer | |
| Charles Coste | France | Track cycling | 1948 Summer | |
| Émile Coste | Fencing | 1900 Summer | |
| Jorge Coste | Mexico | Water polo | 1976 Summer | |
| Mihai Coste | Romania | Volleyball | 1964 Summer | |
| Bianca Costea | Swimming | 2020 Summer | |
| Marian Costea | Ice hockey | 1976 Winter, 1980 Winter | |
| Amy Costello | Great Britain | Field hockey | 2024 Summer | |
| Pat Costello | United States | Rowing | 1952 Summer, 1956 Summer | |
| Paul Costello | 1920 Summer, 1924 Summer, 1928 Summer | |
| Robert Costello | Equestrian eventing | 2000 Summer | |
| Victor Costello | Ireland | Athletics | 1992 Summer | |
| Julio César Costemalle | Uruguay | Water polo | 1936 Summer, 1948 Summer | |
| Dick Coster | Netherlands | Sailing | 1980 Summer | |
| Elizabeth Coster | New Zealand | Swimming | 2004 Summer, 2008 Summer | |
| Kalle Coster | Netherlands | Sailing | 2004 Summer, 2008 Summer, 2012 Summer | |
| Sven Coster | 2004 Summer, 2008 Summer, 2012 Summer | |
| Loïc Costerg | France | Bobsleigh | 2014 Winter, 2018 Winter | |
| Nick Costes | United States | Athletics | 1956 Summer | |
| Grigore Costescu | Romania | Basketball | 1952 Summer | |
| Daniela Costian | Australia | Athletics | 1992 Summer, 1996 Summer, 2000 Summer | |
| Candy Costie | United States | Artistic swimming | 1984 Summer | |
| Sandra Costigan | Field hockey | 1988 Summer | |
| Carlo Costigliolo [ Wikidata ] | Italy | Artistic gymnastics | 1920 Summer | |
| Luigi Costigliolo [ Wikidata ] | 1920 Summer | |
| Jamie Costin | Ireland | Athletics | 2000 Summer, 2008 Summer | |
| Paulo Costinha | Portugal | Football | 1996 Summer | |
| Paolo Costoli | Italy | Swimming | 1928 Summer, 1932 Summer | |
| Bernadette Coston | South Africa | Field hockey | 2012 Summer | |
| Viorel Costraş | Romania | Water polo | 1980 Summer | |
| Tanguy Cosyns | Belgium | Field hockey | 2016 Summer | |
| Frane Cota | Yugoslavia | Art competitions | 1924 Summer | |
| Constantin Cotacu | Romania | Bobsleigh | 1964 Winter | |
| Alain Côté | Canada | Fencing | 1984 Summer, 1988 Summer, 1992 Summer | |
| Andrée-Anne Côté | Artistic swimming | 2020 Summer | |
| Aubert Côté | Wrestling | 1908 Summer | |
| Caroline Côté | Volleyball | 1984 Summer | |
| Chantal Côté | Speed skating | 1988 Winter | |
| Gérard Côté | Athletics | 1948 Summer | |
| Langis Côté | Weightlifting | 1988 Summer | |
| Paul Côté | Sailing | 1972 Summer | |
| Dimitri Goanță | Romania | Water polo | 2012 Summer | |
| Waldemar Cotelo | Uruguay | Athletics | 1996 Summer | |
| Elio Cotena | Italy | Boxing | 1968 Summer | |
| Antonio Cotichini [ Wikidata ] | Artistic gymnastics | 1908 Summer | |
| Wilfredo Coto | Cuba | Shooting | 1948 Summer | |
| Jacques Cotot | France | Boxing | 1960 Summer, 1964 Summer | |
| Samuele Cottafava [ Wikidata ] | Italy | Beach volleyball | 2024 Summer | |
| Olivier Cotte | France | Freestyle skiing | 1994 Winter, 1998 Winter | |
| Stéphanie Cottel | Rhythmic gymnastics | 1988 Summer | |
| Joni Cotten | United States | Curling | 2002 Winter | |
| Edward Cotter | Canada | Athletics | 1908 Summer | |
| Geoff Cotter | New Zealand | Rowing | 1988 Summer | |
| James Cotterell [ Wikidata ] | Great Britain | Artistic gymnastics | 1908 Summer, 1920 Summer | |
| Johnno Cotterill | Australia | Water polo | 2012 Summer, 2016 Summer | |
| Mary-Anne Cotterill | Great Britain | Swimming | 1964 Summer | |
| Thomas Fremantle, 3rd Baron Cottesloe | Shooting | 1908 Summer | |
| Jean Cottez | France | Rowing | 1936 Summer | |
| Aleksandra Cotti | Italy | Water polo | 2012 Summer, 2016 Summer | |
| Frédéric Cottier | France | Equestrian jumping | 1984 Summer, 1988 Summer | |
| Gérald Cottier | Switzerland | Basketball | 1952 Summer | |
| Pierre Cottier | Weightlifting | 1936 Summer | |
| De Cottignon | France | Sailing | 1900 Summer | |
| Bob Cottingham | United States | Fencing | 1988 Summer, 1992 Summer | |
| John Cottle | New Zealand | Equestrian jumping | 1984 Summer, 1988 Summer | |
| Simon Cottle | Great Britain | Rowing | 2004 Summer | |
| Héctor Cotto | Puerto Rico | Athletics | 2008 Summer, 2012 Summer | |
| José Cotto | Boxing | 1996 Summer | |
| Miguel Cotto | 2000 Summer | |
| Serge Van Cottom | Belgium | Weightlifting | 1980 Summer | |
| Amy Cotton | Canada | Judo | 2004 Summer, 2012 Summer | |
| Bernie Cotton | Great Britain | Field hockey | 1972 Summer | |
| John Cotton | United States | Baseball | 2000 Summer | |
| Rebecca Cotton | New Zealand | Basketball | 2000 Summer, 2004 Summer | |
| Shirley Cotton | Australia | Athletics | 1956 Summer | |
| Joe Cottrill | Great Britain | 1912 Summer | |
| Madeleine Cotty | France | Art competitions | 1924 Summer | |
| Vlad Cotuna | Romania | Artistic gymnastics | 2012 Summer | |
| Emmanuelle Coubat | France | Table tennis | 1992 Summer, 1996 Summer | |
| Pierre de Coubertin | Germany | Art competitions | 1912 Summer | |
| Jean-Claude Coucardon | France | Rowing | 1972 Summer, 1976 Summer | |
| Liz Couch | New Zealand | Skeleton | 2002 Winter | |
| Risdon Couch [ Wikidata ] | Great Britain | Wrestling | 1908 Summer | |
| Sharon Couch | United States | Athletics | 1992 Summer, 2000 Summer | |
| Tonia Couch | Great Britain | Diving | 2008 Summer, 2012 Summer, 2016 Summer | |
| John Couchman | Rowing | 1936 Summer | |
| Paulien Couckuyt | Belgium | Athletics | 2020 Summer, 2024 Summer | |
| Coucou [ Wikidata ] | France | Artistic gymnastics | 1900 Summer | |
| Jacques Couderc de Fonlongue | Equestrian jumping | 1928 Summer | |
| Céline Couderc | Swimming | 2004 Summer, 2008 Summer | |
| Gilles Coudray | Republic of the Congo | 1992 Summer | |
| Tiana Coudray | United States | Equestrian eventing | 2012 Summer | |
| Bryn Coudraye | Australia | Rowing | 2012 Summer | |
| Louis Coudurier [ Wikidata ] | France | Fencing | 1900 Summer | |
| Carole Couesnon | Shooting | 1996 Summer | |
| Charles-Philbert de Couët de Lorry | Equestrian eventing | 1952 Summer | |
| Michel Cougé | Football | 1976 Summer | |
| Aoife Coughlan | Australia | Judo | 2020 Summer, 2024 Summer | |
| Angela Coughlan | Canada | Swimming | 1968 Summer | |
| Eoin Coughlan | Australia | Judo | 2016 Summer | |
| Gerry Coughlan | Ireland | Athletics | 1928 Summer | |
| James Coughlan | New Zealand | Field hockey | 2016 Summer | |
| Peter Coughlan | Australia | Swimming | 1976 Summer | |
| Natalie Coughlin | United States | 2004 Summer, 2008 Summer, 2012 Summer | |
| Paul Couillaud | France | Athletics | 1924 Summer | |
| Bilal Coulibaly | Basketball | 2024 Summer | |
| Ismaël Coulibaly | Mali | Taekwondo | 2016 Summer, 2024 Summer | |
| Kafoumba Coulibaly | Ivory Coast | Football | 2008 Summer | |
| Mamadou Coulibaly | Mali | Judo | 1992 Summer | |
| Mohamed Coulibaly | Swimming | 2008 Summer | |
| Moussa Coulibaly | Football | 2004 Summer | |
| Naîgnouma Coulibaly | Basketball | 2008 Summer | |
| Raymond Coulibaly [ Wikidata ] | Judo | 1972 Summer | |
| Yoyaga Coulibaly | Ivory Coast | Athletics | 1964 Summer, 1968 Summer | |
| Joanna Coull | Great Britain | Swimming | 1988 Summer | |
| Robert Coull | Track cycling | 1988 Summer | |
| François Coulombe-Fortier | Canada | Taekwondo | 2012 Summer | |
| Henri de Coulombiers [ Wikidata ] | France | Equestrian jumping | 1900 Summer | |
| Eugène Coulon | Water polo | 1900 Summer | |
| Eugène Coulon | Athletics | 1920 Summer | |
| Michel Coulon | Belgium | Road cycling | 1968 Summer | |
| Raymond Coulon | France | Art competitions | 1948 Summer | |
| D'Arcy Coulson | Canada | Luge | 1968 Winter | |
| Dudley Coulson | Kenya | Field hockey | 1956 Summer | |
| Rowan Coultas | Great Britain | Snowboarding | 2018 Winter | |
| Allan Coulter | Canada | Volleyball | 1984 Summer, 1992 Summer | |
| Chan Coulter | United States | Athletics | 1924 Summer | |
| Raymond Coulter | Shooting | 1924 Summer | |
| Thomas Coulter | Canada | Athletics | 1932 Summer | |
| Bill Coulthard | Basketball | 1952 Summer | |
| Jean Coulthard | Art competitions | 1948 Summer | |
| Shaun Coulton | Australia | Rowing | 2004 Summer | |
| André Coumans | Belgium | Equestrian jumping | 1920 Summer | |
| Mel Counts | United States | Basketball | 1964 Summer | |
| Monique Coupat | France | Rowing | 1988 Summer | |
| Pierre Couquelet | Belgium | Alpine skiing | 1984 Winter | |
| René la Cour | Denmark | Sailing | 1948 Summer | |
| Troels la Cour | 1948 Summer | |
| Georgia Courage-Gardiner | Australia | Artistic swimming | 2024 Summer | |
| Laurent Couraire-Delage | France | Sailing | 1984 Summer, 1988 Summer | |
| Charles Courant | Switzerland | Wrestling | 1920 Summer, 1924 Summer | |
| Yvette Courault | France | Shooting | 1984 Summer | |
| Félicien Courbet | Belgium | Swimming, Water polo | 1908 Summer, 1912 Summer, 1920 Summer | |
| Raoul Courbin | France | Football | 1948 Summer | |
| Courder | Track cycling | 1920 Summer | |
| Jim Courier | United States | Tennis | 1992 Summer | |
| Henri Cournollet | France | Curling | 1924 Winter | |
| Charle Cournoyer | Canada | Short track speed skating | 2014 Winter, 2018 Winter | |
| René Cournoyer | Artistic gymnastics | 2020 Summer, 2024 Summer | |
| Albert Courquin | France | Shooting | 1908 Summer, 1924 Summer | |
| Didier Courrèges | Equestrian eventing | 2004 Summer | |
| Louis Courron | Athletics | 1948 Summer | |
| Clova Court | Great Britain | 1992 Summer | |
| Jean-François Court | France | Wrestling | 1984 Summer, 1988 Summer | |
| John Court | Great Britain | Canoe slalom | 1972 Summer | |
| Joyce Court | Canada | Swimming | 1948 Summer | |
| Pierre Court | France | Field hockey | 1960 Summer | |
| Léon Courtejaire | Athletics | 1924 Summer | |
| Jacky Courtillat | Fencing | 1960 Summer, 1964 Summer | |
| Charles Courtin | Athletics | 1920 Summer | |
| John Courtis | Great Britain | Boxing | 1924 Summer | |
| Karen Courtland | United States | Figure skating | 1994 Winter | |
| Percy Courtman | Great Britain | Swimming | 1908 Summer, 1912 Summer | |
| Russ Courtnall | Canada | Ice hockey | 1984 Winter | |
| Frank Courtney | Rowing | 1932 Summer | |
| J. Ira Courtney | United States | Athletics | 1912 Summer | |
| Joanne Courtney | Canada | Curling | 2018 Winter | |
| Kate Courtney | United States | Cycling mountain bike | 2020 Summer | |
| Tom Courtney | Athletics | 1956 Summer | |
| Adrien Courtois | France | 1936 Summer | |
| Charles Courtois | Artistic gymnastics | 1908 Summer | |
| Didier Courtois | Figure skating | 1988 Winter | |
| Émile Courtois | Belgium | Wrestling | 1952 Summer | |
| Laurence Courtois | Tennis | 1996 Summer | |
| Louis Courtois | France | Bobsleigh | 1968 Winter | |
| Jim Courtright | Canada | Athletics | 1936 Summer | |
| René Courvoisier | Switzerland | Field hockey | 1936 Summer | |
| E. Irving Couse | United States | Art competitions | 1928 Summer, 1932 Summer | |
| Cousin [ Wikidata ] | France | Artistic gymnastics | 1900 Summer | |
| Marcel Cousin | Tennis | 1924 Summer | |
| Pierre Cousin | Athletics | 1948 Summer | |
| Julien Cousineau | Canada | Alpine skiing | 2010 Winter | |
| Charles Cousins | Great Britain | Rowing | 2012 Summer | |
| DeMarcus Cousins | United States | Basketball | 2016 Summer | |
| Duane Cousins | Australia | Athletics | 1996 Summer, 2000 Summer | |
| Peter Cousins | Great Britain | Judo | 2008 Summer | |
| Robin Cousins | Figure skating | 1976 Winter, 1980 Winter | |
| Steven Cousins | 1992 Winter, 1994 Winter, 1998 Winter | |
| Yvon Coussin | France | Weightlifting | 1976 Summer | |
| Anthony Coutinho | India | Athletics | 1964 Summer | |
| Geisa Coutinho | Brazil | 2004 Summer, 2012 Summer, 2016 Summer | |
| Piedade Coutinho | Swimming | 1936 Summer, 1948 Summer, 1952 Summer | |
| Carlos Couto | Fencing | 1968 Summer | |
| Eduardo Couto | Sailing | 2008 Summer | |
| Emanuel Couto | Portugal | Tennis | 1992 Summer, 1996 Summer | |
| Fernando Couto | Athletics | 1988 Summer, 1992 Summer | |
| José Couto | Swimming | 1996 Summer, 2000 Summer, 2004 Summer | |
| Kurt Couto | Mozambique | Athletics | 2004 Summer, 2012 Summer, 2016 Summer | |
| Máximo Couto | Portugal | Water polo | 1952 Summer | |
| Francis Coutou | France | Field hockey | 1972 Summer | |
| Jacques Coutrot | Fencing | 1924 Summer, 1936 Summer | |
| Denis Couttet | Cross country skiing | 1924 Winter | |
| Henri Couttet | Ice hockey | 1920 Summer | |
| James Couttet | Alpine skiing, Ski jumping | 1948 Winter, 1952 Winter | |
| Marcel Couttet | Ice hockey | 1936 Winter | |
| Alicia Coutts | Australia | Swimming | 2008 Summer, 2012 Summer, 2016 Summer | |
| Burdett Coutts | Singapore | Field hockey | 1956 Summer | |
| John Coutts | New Zealand | Swimming | 1976 Summer | |
| Russell Coutts | Sailing | 1984 Summer, 1992 Summer | |
| Paul Couture | France | 1900 Summer | |
| I. Couturier [ Wikidata ] | United States | Art competitions | 1924 Summer | |
| Jean Couturier | France | Basketball | 1936 Summer | |
| Patricia Couturier | Rowing | 1984 Summer | |
| Tomás Couve | Chile | Equestrian jumping | 2012 Summer | |
| Raoul Couvert | France | Ice hockey | 1924 Winter, 1928 Winter | |
| Georges Couvreur | United States | Art competitions | 1932 Summer | |
| Camille Couzi | France | Fencing | 1992 Summer | |
| Dean Couzins | New Zealand | Field hockey | 2004 Summer, 2008 Summer, 2012 Summer | |
| Mélanie Couzy | France | Shooting | 2020 Summer, 2024 Summer | |
| Alberto Cova | Italy | Athletics | 1984 Summer, 1988 Summer | |
| Jesús Cova [ Wikidata ] | Venezuela | Boxing | 2024 Summer | |
| Monica Covacci | Canada | Artistic gymnastics | 1988 Summer | |
| Ion Covaci | Romania | Boxing | 1968 Summer | |
| Iosif Covaci | Alpine skiing, Cross country skiing | 1936 Winter | |
| Ludovic Covaci-Borbely | Rowing | 1964 Summer | |
| Gheorghe Covaciu | Handball | 1984 Summer | |
| Adalbert Covacs | Modern pentathlon | 1972 Summer | |
| Victor Covalenco | Moldova | Athletics | 2004 Summer, 2008 Summer | |
| Serghei Covaliov | Romania | Canoe sprint | 1968 Summer, 1972 Summer | |
| Mihai Covaliu | Fencing | 1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer | |
| Agustin Covarrubias [ Wikidata ] | Chile | Equestrian jumping | 2024 Summer | |
| Anne Covell | Canada | Athletics | 1968 Summer | |
| Chloe Covell | Australia | Skateboarding | 2024 Summer | |
| Mark Covell | Great Britain | Sailing | 2000 Summer | |
| Phyllis Covell | Tennis | 1924 Summer | |
| Frank Covelli | United States | Athletics | 1964 Summer, 1968 Summer | |
| Yvan Covent | Belgium | Road cycling | 1960 Summer | |
| Bill Coventry | New Zealand | Rowing | 1988 Summer, 1992 Summer | |
| Kirsty Coventry | Zimbabwe | Swimming | 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer | |
| Victor Coverley-Price | Great Britain | Art competitions | 1948 Summer | |
| Deb Covey | Canada | Field hockey | 1988 Summer, 1992 Summer | |
| Gerald Covey | Canoe sprint | 1948 Summer | |
| Andrea Covi | Italy | 1996 Summer | |
| Karlo Čović | Yugoslavia | Wrestling | 1968 Summer, 1972 Summer | |
| Frédéric Covili | France | Alpine skiing | 2002 Winter | |
| Alessandro Covre | Italy | Wrestling | 1912 Summer | |
| Barry Cowan | Great Britain | Tennis | 2000 Summer | |
| James Cowan | Shooting | 1908 Summer | |
| Lyndsai Cowan | Canada | Figure skating | 1968 Winter | |
| Sandy Cowan | Lacrosse | 1904 Summer | |
| John Coward | Great Britain | Ice hockey | 1936 Winter | |
| Josh Coward | Australia | Rugby sevens | 2020 Summer | |
| Matthew Coward-Holley | Great Britain | Shooting | 2020 Summer, 2024 Summer | |
| Patrick Cowdell | Boxing | 1976 Summer | |
| Jacqui Cowderoy | Australia | Alpine skiing | 1980 Winter | |
| Bob Cowell | United States | Swimming | 1948 Summer | |
| Heather Cowell | Great Britain | Rugby sevens | 2024 Summer | |
| Chloe Cowen | Judo | 2000 Summer | |
| Gordon Cowey | Australia | Rowing | 1956 Summer | |
| William Cowhig | Great Britain | Artistic gymnastics | 1908 Summer, 1912 Summer, 1920 Summer | |
| Don Cowie | New Zealand | Sailing | 1992 Summer, 1996 Summer, 2000 Summer | |
| Gillian Cowley | Zimbabwe | Field hockey | 1980 Summer | |
| Michael Cowley | Great Britain | Road cycling | 1964 Summer | |
| Orlando Cowley | Cuba | Water polo | 1972 Summer, 1980 Summer | |
| Rhydian Cowley | Australia | Athletics | 2016 Summer, 2020 Summer, 2024 Summer | |
| Sarah Cowley | New Zealand | 2012 Summer | |
| Alison Cox | United States | Rowing | 2004 Summer | |
| Bill Cox | Athletics | 1924 Summer | |
| Bill Cox | Speed skating | 1968 Winter | |
| Britteny Cox | Australia | Freestyle skiing | 2010 Winter, 2014 Winter, 2018 Winter, 2022 Winter | |
| Bronwyn Cox | Rowing | 2020 Summer, 2024 Summer | |
| Carmiesha Cox | Bahamas | Athletics | 2016 Summer | |
| Crystal Cox | United States | 2004 Summer | |
| David Cox | Great Britain | Artistic gymnastics | 1992 Summer | |
| Doug Cox | Canada | Wrestling | 1988 Summer, 1996 Summer | |
| Gardner Cox | United States | Sailing | 1968 Summer | |
| Han Cox | Netherlands | Rowing | 1928 Summer | |
| J'den Cox | United States | Wrestling | 2016 Summer | |
| John Cox [ Wikidata ] | Great Britain | 1908 Summer | |
| John Cox | Venezuela | Basketball | 2016 Summer | |
| Lionel Cox | Australia | Track cycling | 1952 Summer | |
| Lionel Cox | Belgium | Shooting | 2012 Summer | |
| Marsha Cox | South Africa | Field hockey | 2004 Summer, 2008 Summer, 2012 Summer | |
| Matthew Cox [ Wikidata ] | Australia | Snowboarding | 2022 Winter | |
| Michelle Cox | Softball | 2020 Summer | |
| Peter Cox Jr. | United States | Fencing | 1996 Summer | |
| Rawle Cox | Field hockey | 1984 Summer | |
| Renie Cox | Alpine skiing | 1960 Winter | |
| Rohanee Cox | Australia | Basketball | 2008 Summer | |
| Ryan Cox | South Africa | Road cycling | 2004 Summer | |
| Shana Cox | Great Britain | Athletics | 2012 Summer | |
| Shannon Cox | New Zealand | Rowing | 2024 Summer | |
| Shawn Cox | Barbados | Boxing | 2000 Summer | |
| Somers Cox | New Zealand | Rowing | 1932 Summer | |
| Sophie Cox | Great Britain | Judo | 2004 Summer, 2012 Summer | |
| Stan Cox | Athletics | 1948 Summer, 1952 Summer | |
| Stephanie Cox | United States | Football | 2008 Summer | |
| Stephen Cox | New Zealand | Road cycling | 1984 Summer | |
| Stephen Cox | Zimbabwe | Rowing | 2024 Summer | |
| William Cox [ Wikidata ] | Great Britain | Wrestling | 1908 Summer | |
| Jo Cox-Ladru | Netherlands | Artistic gymnastics | 1952 Summer | |
| Richard Coxon | Australia | Sailing | 1984 Summer | |
| Shauna Coxsey | Great Britain | Sport climbing | 2020 Summer | |
| Tracy Cox-Smyth | Zimbabwe | Diving | 1988 Summer, 1992 Summer | |
| Eric Coy | Canada | Athletics | 1948 Summer | |
| Michelle Coy | Great Britain | Bobsleigh | 2002 Winter | |
| Warren Coye | Belize | Road cycling | 1984 Summer | |
| Dan Coyle | Ireland | Athletics | 1948 Summer | |
| Daniel Coyle | Equestrian jumping | 2024 Summer | |
| Frank Coyle | United States | Athletics | 1912 Summer | |
| John Coyle | Short track speed skating | 1994 Winter | |
| Natalya Coyle | Ireland | Modern pentathlon | 2012 Summer, 2016 Summer, 2020 Summer | |
| Colleen Coyne | United States | Ice hockey | 1998 Winter | |
| Kendall Coyne Schofield | 2014 Winter, 2018 Winter, 2022 Winter | |
| Amy Cozad | Diving | 2016 Summer | |
| Sydney Cozens | Great Britain | Track cycling | 1928 Summer | |
| Remus Cosma | Romania | Boxing | 1976 Summer | |
| Ionela Cozmiuc | Rowing | 2016 Summer, 2020 Summer, 2024 Summer | |
| Marius Cozmiuc | 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer | |
| Sharon Cozzarin | Canada | Shooting | 1992 Summer | |
| Luciano Cozzi | Italy | Diving | 1928 Summer | |
| Paolo Cozzi | Volleyball | 2004 Summer | |
| Vanessa Cozzi | Brazil | Rowing | 2016 Summer | |