Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Ayaka Nishimura | JPN |
HOC | Olympics | 2016 | 0–0–1 2013 Kazan HOK bronze |
| Motoki Nishimura | JPN |
JUD | Olympics | 1972 | 1–0–0 1967 Tokyo JUD gold: heavyweight +93 kg |
| Shiho Nishioka | JPN |
FEN | Olympics | 2012—2016 | 0–0–1 2007 Bangkok FEN bronze: foil team |
| Yoshie Nishioka | JPN |
SWM | Olympics | 1988 | 0–2–0 1993 Buffalo SWI silver: 200 m breaststroke; 1995 Fukuoka SWI silver: 4×100 m medley relay |
| Masashi Nishiyama | JPN |
JUD | Olympics | 2012 | 0–0–1 2009 Beograd JUD bronze: team |
| Koki Niwa | JPN |
TTE | Olympics / YOG | 2010—2020 | 0–2–1 2013 Kazan TTN silver: mixed doubles and team, bronze: singles |
| Sunder Nix | USA |
ATH | Olympics | 1984 | 1–0–1 1983 Edmonton ATH gold: 4×400 m relay, bronze: 400 m |
| Catherine Nixon | USA |
FEN | YOG | 2014 | 0–1–0 2017 Taipei FEN silver: épée team |
| Patricia Noall | CAN |
SWM | Olympics | 1988 | 2–1–3 1991 Sheffield SWI gold: 400 m freestyle, silver: 200 m freestyle, bronze: 400 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay; 1993 Buffalo SWI gold: 4×200 m freestyle relay (competed as Noall-Lauzon) |
| Cindy Noble | USA |
BKB | Olympics | 1984 | 1–0–0 1979 Ciudad de México BAS gold |
| Avognan Nogboum | CIV |
ATH | Olympics / Other | 1976—1984 | 0–1–0 1979 Ciudad de México ATH silver: 4×100 m relay |
| Yasuhiro Noguchi | JPN |
VVO | Olympics | 1972 | 1–0–0 1967 Tokyo VOL gold |
| Sean Nolan | USA |
WPO | Olympics | 2000 | 1–0–0 1993 Buffalo WAP gold |
| Frane Nonković | CRO YUG |
WPO | Olympics | 1964 | 1–0–0 1961 Sofia WAP gold |
| Alessandro Nora | ITA |
WPO | Olympics | 2016 | 0–1–0 2015 Gwangju WAP silver |
| Wolfgang Nordwig | GDR |
ATH | Olympics | 1968—1972 | 1–0–0 1970 Torino ATH gold: pole vault |
| Helen Norfolk | NZL |
SWM | Olympics | 2000—2008 | 0–3–0 2005 İzmir SWI silver: 200 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay |
| Yana Noskova | ROC RUS |
TTE | Olympics / YOG | 2010—2020 | 0–0–6 2013 Kazan TTN bronze: doubles and team; 2015 Gwangju TTN bronze: mixed doubles; 2019 Napoli TTN bronze: doubles, mixed doubles, and team |
| Gruia Novac | ROU |
WPO | Olympics | 1964—1972 | 0–0–1 1965 Budapest WAP bronze |
| Yevgeny Novikov | RUS URS |
SWM | Olympics | 1964 | 0–1–0 1965 Budapest SWI silver: 4×200 m freestyle relay |
| Yelena Novikova-Belova | BLR URS |
FEN | Olympics | 1968—1980 | 1–1–1 1970 Torino FEN gold: foil team (competed as Yelena Belova); 1973 Moskva FEN silver: foil team, bronze: foil (competed as Yelena Belova) |
| Nikolai Novosjolov | EST |
FEN | Olympics | 2000—2016 | 0–0–1 2001 Beijing FEN bronze: épée |
| Josef Novotný | CZE TCH |
VVO | Olympics | 1980 | 0–1–0 1977 Sofia VOL silver |
| Roman Novotný | CZE |
ATH | Olympics | 2008—2012 | 0–0–1 2007 Bangkok ATH bronze: long jump |
| Teresa Nowak | POL |
ATH | Olympics | 1972 | 0–1–0 1975 Roma ATH silver: 100 m hurdles |
| Józef Nowara | POL |
FEN | Olympics | 1968—1976 | 0–0–1 1973 Moskva FEN bronze: sabre team |
| Jarosław Nowicki | POL |
ROW | Olympics | 1996 | 0–0–1 1993 Buffalo ROW bronze: quadruple sculls |
| Danek Nowosielski | CAN |
FEN | Olympics | 1988—1996 | 0–1–0 1987 Zagreb FEN silver: épée team |
| Zenon Nowosz | POL |
ATH | Olympics | 1968—1976 | 1–0–0 1970 Torino ATH gold: 4×100 m relay |
| Mubarak Sultan Al-Nubi Faraj | QAT |
ATH | Olympics | 1996—2000 | 0–0–1 1997 Catania ATH bronze: 400 m hurdles |
| Andrea Nugent | CAN |
SWM | Olympics | 1988—1992 | 0–2–3 1991 Sheffield SWI silver: 4×100 m medley relay, bronze: 100 m freestyle and 4×100 m freestyle relay; 1993 Buffalo SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay |
| Mauro Numa | ITA |
FEN | Olympics | 1984—1992 | 3–1–2 1981 București FEN gold: foil team; 1983 Edmonton FEN foil team, silver: foil; 1985 Kobe FEN bronze: foil team; 1989 Duisburg FEN gold: foil, bronze: foil team |
| Liya Nurkina | KAZ |
TKW | Olympics | 2008 | 0–0–1 2007 Bangkok TKW bronze: welterweight -67 kg |
| Kai Nürnberger | GER |
BKB | Olympics | 1992 | 0–0–1 1989 Duisburg BAS bronze (competed for West Germany) |
| Ruslan Nurudinov | UZB |
WLF | Olympics | 2012—2016 | 1–0–0 2013 Kazan WLT gold: heavyweight -105 kg |
| Carlos Nuzman | BRA |
VVO | Olympics / Administrator | 1964—2017 | 0–0–1 1963 Porto Alegre VOL bronze |
| Nyantain Bayaraa | MGL |
SHO | Olympics | 2012 | 0–1–0 2011 Shenzhen SHO silver: 50 m rifle prone team |
| Jarmila Nygrýnová | CZE TCH |
ATH | Olympics | 1972—1980 | 1–1–0 1975 Roma ATH gold: long jump; 1977 Sofia ATH silver: long jump |
| Erik Nys | BEL |
ATH | Olympics | 1996—2000 | 0–0–1 1999 Palma de Mallorca ATH bronze: long jump |
| O Jong-Ae | PRK |
WLF | Olympics | 2008 | 1–0–0 2011 Shenzhen WLT gold: lightweight -58 kg |
| Brittany O'Brien | AUS |
DIV | Olympics | 2016 | 0–1–0 2017 Taipei DIV silver: synchronized platform |
| Mike O'Brien | USA |
SWM | Olympics | 1984 | 0–1–0 1985 Kobe SWI silver: 1500 m freestyle |
| Jessica O'Connell | CAN |
ATH | Olympics | 2016 | 0–1–0 2017 Taipei ATH silver: 1500 m |
| Patrick O'Connor | JAM |
ATH | Olympics | 1992 | 2–1–0 1989 Duisburg ATH gold: 4×400 m relay; 1991 Sheffield ATH gold: 400 m, silver: 4×400 m relay |
| Diane O'Grady | CAN |
ROW | Olympics | 1996 | 1–0–0 1993 Buffalo ROW gold: coxless fours |
| Turlough O'Hare | CAN |
SWM | Olympics | 1988—1992 | 2–0–3 1991 Sheffield SWI bronze: 200 m freestyle and 4×200 m freestyle relay; 1993 Buffalo SWI gold: 400 m freestyle and 800 m freestyle, bronze: 200 m freestyle |
| Eileen O'Keeffe | IRL |
ATH | Olympics | 2008 | 0–1–0 2007 Bangkok ATH silver: hammer throw |
| Brandon O'Neill | CAN |
GAR | Olympics | 2008 | 1–0–0 2005 İzmir GYM gold: floor |
| Derval O'Rourke | IRL |
ATH | Olympics | 2004—2012 | 0–0–2 2005 İzmir ATH bronze: 100 m hurdles and 4×100 m relay |
| Sonia O'Sullivan | IRL |
ATH | Olympics / Other | 1992—2004 | 1–1–0 1991 Sheffield ATH gold: 1500 m, silver: 3000 m |
| Gary O'Toole | IRL |
SWM | Olympics | 1988—1992 | 1–0–0 1991 Sheffield SWI gold: 200 m breaststroke |
| Maksim Oberemko | RUS UKR |
SAL | Olympics | 1996—2016 | 0–1–0 1999 Palma de Mallorca SAI silver: Windsurfer men |
| Mark Oberman | AUS |
WPO | Olympics | 1992—2000 | 0–0–1 1995 Fukuoka WAP bronze |
| Paul Oberman | AUS |
WPO | Olympics | 1992 | 0–0–2 1995 Fukuoka WAP bronze; 1997 Catania WAP bronze |
| Fritz Obersiebraße | GER FRG |
ATH | Olympics | 1964 | 1–0–0 1965 Budapest ATH gold: 4×100 m relay (competed for West Germany) |
| Walter Oberste | GER FRG |
ATH | Olympics | 1956 | 1–1–0 1959 Torino ATH gold: 4×400 m relay, silver: 400 m (competed for West Germany) |
| Anton Obholzer | GBR |
ROW | Olympics | 1988 | 0–0–1 1989 Duisburg ROW bronze: single sculls |
| Aleksey Obmochayev | RUS |
VVO | Olympics | 2012 | 1–0–0 2011 Shenzhen VOL gold |
| Jahir Ocampo | MEX |
DIV | Olympics | 2016 | 0–0–1 2017 Taipei DIV bronze: team |
| Diego Occhiuzzi | ITA |
FEN | Olympics | 2008—2016 | 0–1–1 2001 Beijing FEN silver: sabre team; 2005 İzmir FEN bronze: sabre team |
| Ochirbatyn Nasanburmaa | MGL |
WRE | Olympics | 2016 | 0–1–0 2013 Kazan WRE silver: freestyle light-heavyweight -67 kg |
| Ochirdolgoryn Enkhtaivan | MGL |
WRE | Olympics | 1972 | 0–0–1 1977 Sofia WRE bronze: freestyle light-flyweight -48 kg |
| Emil Ochyra | POL |
FEN | Olympics | 1960—1968 | 0–1–1 1959 Torino FEN silver: sabre, bronze: sabre team |
| Tevfik Odabaşı | TUR |
WRE | Olympics | 2004—2008 | 0–1–0 2005 İzmir WRE silver: freestyle lightweight -60 kg |
| Josef Odložil | CZE TCH |
ATH | Olympics | 1964—1968 | 0–1–0 1961 Sofia ATH silver: 4×400 m relay |
| Marlies Oelsner-Göhr | GDR |
ATH | Olympics | 1976—1988 | 1–0–0 1979 Ciudad de México ATH gold: 100 m (competed as Marlies Göhr) |
| Maja Ognjenović | SRB |
VVO | Olympics | 2008—2020 | 0–1–0 2009 Beograd VOL silver |
| Andreea Ogrăzeanu | ROU |
ATH | Olympics | 2012 | 0–0–2 2013 Kazan ATH bronze: 100 m and 200 m |
| Falilat Ogunkoya | NGR |
ATH | Olympics | 1988—2000 | 0–0–1 1987 Zagreb ATH bronze: 4×100 m relay |
| Shinji Ogura | JPN |
ATH | Olympics | 1968 | 0–1–0 1967 Tokyo ATH silver: 4×100 m relay |
| Oh Eun-Seok | KOR |
FEN | Olympics | 2004—2012 | 0–2–0 2003 Daegu FEN silver: sabre; 2007 Bangkok FEN silver: sabre team |
| Oh Ha-Na | KOR |
FEN | Olympics | 2012 | 0–3–0 2003 Daegu FEN silver: foil team; 2005 İzmir FEN silver: foil team; 2007 Bangkok FEN silver: foil team |
| Oh Hye-Ri | KOR |
TKW | Olympics | 2016 | 0–1–0 2009 Beograd TKW silver: middleweight -72 kg |
| Oh Seung-Rip | KOR |
JUD | Olympics | 1972 | 0–1–0 1967 Tokyo JUD silver: lightweight -80 kg |
| Ayami Oishi | JPN |
ROW | Olympics | 2016—2020 | 1–0–0 2015 Gwangju ROW gold: lightweight coxless pairs |
| Kazuki Oiwa | JPN |
FBL | Non-starter | 2012 | 1–0–0 2011 Shenzhen FTB gold |
| Kumiko Okamoto | JPN |
TEN | Olympics | 1988 | 0–1–0 1983 Edmonton TEN silver: doubles |
| Teruichi Okamura | JPN |
GAR | Olympics | 1972 | 2–0–0 1970 Torino GYM gold: all-around and team |
| Masumi Okawa | JPN |
GAR | Olympics | 1996 | 0–0–1 1997 Catania GYM bronze: team |
| Takayuki Okazaki | JPN |
ATH | Olympics | 1960—1964 | 0–2–0 1961 Sofia ATH silver: 4×100 m relay and long jump |
| Makoto Okiguchi | JPN |
GAR | Olympics | 2008 | 1–0–0 2009 Beograd GYM gold: team |
| Reïna-Flor Okori | GEQ FRA |
ATH | Olympics / Non-starter / Other | 2004—2016 | 0–0–1 2001 Beijing ATH bronze: 4×100 m relay (competed for France) |
| Marilyn Okoro | GBR |
ATH | Olympics | 2008 | 0–0–1 2005 İzmir ATH bronze: 800 m |
| Adam Okruashvili | GEO |
JUD | Olympics | 2012—2016 | 0–0–1 2007 Bangkok JUD bronze: open class |
| Artyom Okulov | RUS |
WLF | YOG | 2010 | 0–1–0 2013 Kazan WLT silver: light-heavyweight -85 kg |
| Yoshihiro Okumura | JPN |
SWM | Olympics | 2004—2008 | 1–1–0 2003 Daegu SWI gold: 200 m freestyle; 2005 İzmir SWI silver: 4×200 m freestyle relay |
| Oksana Okunieva | UKR |
ATH | Olympics | 2016 | 1–0–0 2017 Taipei ATH gold: high jump |
| Hiroaki Okuno | JPN |
VVO | Olympics | 1984 | 0–0–1 1981 București VOL bronze |
| Anna Olasz | HUN |
OWS/SWM | Olympics / YOG | 2010—2020 | 1–0–0 2017 Taipei SWI gold: 10 km |
| Janusz Olech | POL |
FEN | Olympics | 1988—1996 | 1–0–0 1989 Duisburg FEN gold: sabre team |
| Elisabeta Oleniuc-Lipă | ROU |
ROW | Olympics / Other | 1984—2004 | 1–0–0 1989 Duisburg ROW gold: single sculls (competed as Elisabeta Lipa) |
| Margrit Olfert | GDR |
ATH | Olympics | 1972 | 1–0–0 1973 Moskva ATH gold: long jump |
| Nicolas Oliveira | BRA |
SWM | Olympics | 2008—2016 | 0–1–0 2011 Shenzhen SWI silver: 4×100 m freestyle relay |
| André Olivier | RSA |
ATH | Olympics | 2012 | 0–0–1 2011 Shenzhen ATH bronze: 4×400 m relay |
| Nadezhda Olizarenko | URS UKR |
ATH | Olympics | 1980—1988 | 1–0–0 1979 Ciudad de México ATH gold: 800 m (competed as Nadiya Mushta) |
| Andrey Olkhovsky | RUS URS |
TEN | Olympics | 1988—1996 | 0–2–0 1987 Zagreb TEN silver: doubles and mixed doubles |
| Barb Olmsted | CAN |
CSP | Olympics | 1984—1988 | 0–0–1 1987 Zagreb CAN bronze: K2 500 m |
| Nancy Olmsted | CAN |
CSP | Olympics | 1988 | 0–0–1 1987 Zagreb CAN bronze: K2 500 m |
| Ben Olsen | USA |
FBL | Olympics | 2000 | 0–0–1 1997 Catania FTB bronze |
| Ioana Olteanu | ROU |
ROW | Olympics | 1992—2000 | 1–1–0 1993 Buffalo ROW gold: quadruple sculls. silver: coxless fours |
| Adewale Olukoju | NGR |
ATH | Olympics | 1988—1996 | 1–1–0 1991 Sheffield ATH gold: discus throw; 1993 Buffalo ATH silver: discus throw |
| Om Jong-Ran | PRK |
FBL | Olympics | 2008 | 1–0–0 2003 Daegu FTB gold |
| Om Yun-Chol | PRK |
WLF | Olympics | 2012—2016 | 1–0–0 2017 Taipei WLT gold: bantamweight -56 kg |
| Magomed Omarov | RUS |
BOX | Olympics | 2012 | 1–0–0 2013 Kazan BOX gold: super-heavyweight +91 kg |
| Rafał Omelko | POL |
ATH | Olympics | 2016 | 0–0–2 2015 Gwangju ATH bronze: 4×400 m relay; 2017 Taipei ATH bronze: 400 m |
| Philippe Omnès | FRA |
FEN | Olympics | 1984—1996 | 0–1–0 1985 Kobe FEN silver: foil team |
| Shigekazu Omori | JPN |
ATH | Olympics | 1996 | 0–1–0 1993 Buffalo ATH silver: 4×400 m relay |
| Jeffrey Ong | MAS |
SWM | Olympics | 1988—1992 | 0–1–0 1991 Sheffield SWI silver: 1500 m freestyle |
| Busanan Ongbamrungphan | THA |
BDM | Olympics / YOG | 2014—2020 | 0–0–1 2015 Gwangju BDM bronze: mixed team |
| Junko Onishi | JPN |
SWM | Olympics | 2000—2004 | 1–1–0 1997 Catania SWI gold: 4×100 m medley relay, silver: 100 m butterfly |
| Takashi Ono | JPN |
JUD | Olympics | 2008 | 0–1–0 2003 Daegu JUD silver: team |
| Marta Onofre | POR |
ATH | Olympics | 2016 | 0–0–1 2017 Taipei ATH bronze: pole vault |
| Mary Onyali-Omagbemi | NGR |
ATH | Olympics / Other | 1988—2004 | 0–1–1 1987 Zagreb ATH silver: 200 m, bronze: 4×100 m relay (competed as Mary Onyali) |
| Reshmie Oogink | NED |
TKW | Olympics | 2016 | 0–0–3 2009 Beograd TKW bronze: middleweight -72 kg; 2015 Gwangju TKW bronze: middleweight -73 kg; 2017 Taipei TKW bronze: middleweight -73 kg |
| John Robert Oosthuizen | RSA |
ATH | Olympics | 2008 | 0–1–0 2013 Kazan ATH silver: javelin throw |
| Christy Opara-Thompson | NGR |
ATH | Olympics | 1992—1996 | 0–1–0 1993 Buffalo ATH silver: 4×100 m relay |
| Craig Oppel | USA |
SWM | Olympics | 1988 | 2–0–0 1985 Kobe SWI gold: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Marian Oprea | ROU |
ATH | Olympics / Other | 2004—2016 | 0–1–0 2001 Beijing ATH silver: triple jump |
| Nicolae Oprescu | ROU |
GAR | Olympics | 1972—1980 | 0–0–2 1973 Moskva GYM bronze: team; 1977 Sofia GYM bronze: rings |
| Arina Opyonysheva | RUS |
SWM | Olympics | 2016 | 1–1–2 2017 Taipei SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay, bronze: 100 m freestyle and 200 m freestyle |
| Roman Oravec | CZE |
ATH | Olympics | 2000 | 1–0–0 2003 Daegu ATH gold: 800 m |
| Askar Orazalinov | KAZ |
WPO | Olympics / Coach | 2000—2004 | 1–0–0 1985 Kobe WAP gold (competed for the Soviet Union) |
| Olga Orban-Szabo | ROU |
FEN | Olympics | 1956—1972 | 1–2–0 1961 Sofia FEN gold: foil team, silver: foil; 1965 Budapest FEN silver: foil team |
| Éva Orbán | HUN |
ATH | Olympics | 2004—2012 | 0–1–0 2011 Shenzhen ATH silver: hammer throw |
| Giovanni Orlando | ITA |
SWM | Olympics | 1964 | 0–0–1 1963 Porto Alegre SWI bronze: 4×100 m freestyle relay |
| Mark Ormrod | AUS |
ATH | Olympics | 2004—2008 | 0–1–0 2007 Bangkok ATH silver: 4×400 m relay |
| Daniela Oronova | BUL |
ROW | Olympics | 1988—1996 | 1–0–0 1989 Duisburg ROW gold: quadruple sculls |
| Rozalia Oros | ROU |
FEN | Olympics | 1984 | 0–2–0 1983 Edmonton FEN silver: foil and foil team |
| Bruno Orsoni | FRA |
SWM | Olympics | 1996 | 0–2–0 1993 Buffalo SWI silver: 4×200 m freestyle relay; 1995 Fukuoka SWI silver: 4×200 m freestyle relay |
| Alejandro Ortiz | CUB |
BKB | Olympics | 1976—1980 | 0–0–1 1970 Torino BAS bronze |
| Arturo Ortiz | ESP |
ATH | Olympics | 1988—1996 | 0–1–1 1991 Sheffield ATH silver: high jump; 1993 Buffalo ATH bronze: high jump |
| Idalys Ortiz | CUB |
JUD | Olympics | 2008—2020 | 1–1–0 2013 Kazan JUD gold: open class, silver: heavyweight +78 kg |
| Tatiana Ortiz | MEX |
DIV | Olympics / Other | 2008 | 3–1–0 2007 Bangkok DIV gold: synchronized springboard, synchronized platform, and team; 2011 Shenzhen DIV silver: synchronized platform |
| Serena Ortolani | ITA |
VVO | Olympics | 2008—2016 | 1–0–0 2009 Beograd VOL gold |
| Martina Orzan | ITA |
ROW | Olympics | 1996 | 0–0–1 1993 Buffalo ROW bronze: lightweight single sculls |
| Yukiko Osada | JPN |
SWM | Olympics | 2004 | 0–0–2 2003 Daegu SWI bronze: 200 m butterfly and 4×100 m medley relay |
| Liliya Osadchaya | URS UKR |
VVO | Olympics | 1976 | 1–0–0 1977 Sofia VOL gold |
| Keiko Osaki-Otsubo | JPN |
DIV | Olympics | 1964—1972 | 0–1–0 1967 Tokyo DIV silver: platform (competed as Keiko Osaki) |
| Suguru Osako | JPN |
ATH | Olympics | 2016—2020 | 1–0–0 2011 Shenzhen ATH gold: 10000 m |
| Vitaliy Osharov | UKR |
FEN | Olympics | 2004 | 2–0–0 2003 Daegu FEN gold: épée team; 2005 İzmir FEN gold: épée team |
| Kyoko Oshima | JPN |
GAR | Olympics | 2004—2008 | 1–0–0 2011 Shenzhen GYM gold: team |
| Iuri Osip'ovi | GEO URS |
FEN | Olympics | 1956 | 1–1–1 1959 Torino FEN gold: foil team; 1961 Sofia FEN silver: foil team; 1963 Porto Alegre FEN bronze: foil team |
| Irina Osipova | RUS |
BKB | Olympics | 2004—2012 | 0–0–1 1999 Palma de Mallorca BAS bronze |
| Erick Osornio | MEX |
TKW | Olympics | 2012 | 0–1–0 2005 İzmir TKW silver: featherweight -67 kg |
| Ryszard Ostrowski | POL |
ATH | Olympics | 1988 | 2–0–0 1983 Edmonton ATH gold: 800 m; 1985 Kobe ATH gold: 800 m |
| István Osztrics | HUN |
FEN | Olympics | 1972—1980 | 1–2–1 1970 Torino FEN silver: épée team, bronze: épée; 1973 Moskva FEN gold: épée, silver: épée team |
| Tomio Ota | JPN |
ATH | Olympics | 1960—1964 | 0–0–1 1961 Sofia ATH bronze: triple jump |
| Yuki Ota | JPN |
FEN | Olympics / Administrator | 2004—2021 | 1–0–0 2005 İzmir FEN gold: foil team |
| Ami Otaki | JPN |
FBL | Non-starter | 2012 | 0–2–0 2009 Beograd FTB silver; 2011 Shenzhen FTB silver |
| Toshio Otsubo | JPN |
DIV | Olympics | 1964—1968 | 0–0–1 1967 Tokyo DIV bronze: platform |
| Dave Ottley | GBR |
ATH | Olympics | 1980—1988 | 0–1–0 1977 Sofia ATH silver: javelin throw |
| Björn Otto | GER |
ATH | Olympics | 2012 | 1–0–1 2003 Daegu ATH bronze: pole vault; 2005 İzmir ATH gold: pole vault |
| Eddy Ottoz | ITA |
ATH | Olympics | 1964—1968 | 2–0–0 1965 Budapest ATH gold: 110 m hurdles; 1967 Tokyo ATH gold: 110 m hurdles |
| Ou Shaoyan | CHN |
ROW | Olympics | 1996—2000 | 1–0–0 1993 Buffalo ROW gold: lightweight coxless pairs |
| Élodie Ouédraogo | BEL |
ATH | Olympics | 2004—2012 | 0–0–1 2005 İzmir ATH bronze: 200 m |
| Ouyang Kunpeng | CHN |
SWM | Olympics | 2000—2004 | 2–1–0 2003 Daegu SWI gold: 100 m backstroke and 200 m backstroke, silver: 50 m backstroke |
| Eszter Óváry | HUN |
GAR | Olympics | 1988—1996 | 1–1–0 1995 Fukuoka GYM gold: horse vault, silver: floor |
| Olena Ovcharova-Krasovska | UKR |
ATH | Olympics | 1996—2004 | 0–1–0 1995 Fukuoka ATH silver: 100 m hurdles (competed as Olena Ovcharova) |
| Vladimir Ovchinnikov | RUS URS |
ATH | Olympics | 1988—2000 | 0–1–0 1991 Sheffield ATH silver: javelin throw (competed for the Soviet Union) |
| Artem Ovchynnikov | UKR |
ARC | YOG | 2018 | 0–0–1 2019 Napoli ARC bronze: Recurve team (mixed) |
| Tatyana Ovechkina | RUS URS |
BKB | Olympics | 1976—1980 | 2–0–0 1973 Moskva BAS gold; 1977 Sofia BAS gold |
| Elli Overton | AUS |
SWM | Olympics | 1992—2000 | 0–2–2 1997 Catania SWI silver: 200 m medley and 4×200 m freestyle relay, bronze: 400 m medley and 4×100 m freestyle relay |
| Rod Owen-Jones | AUS |
WPO | Olympics | 2000 | 0–0–2 1995 Fukuoka WAP bronze; 1997 Catania WAP bronze |
| Rada Owen | USA |
SWM | Olympics | 2000 | 2–0–0 1999 Palma de Mallorca SWI gold: 4×100 m freestyle relay (swam in heats only) and 4×200 m freestyle relay |
| Abi Oyepitan | GBR |
ATH | Olympics | 2004—2012 | 1–0–0 2001 Beijing ATH gold: 100 m |
| Edvin Ozolin | RUS URS |
ATH | Olympics | 1960—1964 | 3–2–0 1961 Sofia ATH gold: 4×100 m relay; 1963 Porto Alegre ATH gold: 200 m, silver: 100 m; 1965 Budapest ATH gold: 200 m, silver: 4×100 m relay |
| Elvīra Ozoliņa | LAT URS |
ATH | Olympics | 1960—1964 | 1–1–0 1959 Torino ATH gold: javelin throw; 1963 Porto Alegre ATH silver: javelin throw |
| Zeki Öztürk | TUR |
ATH | Olympics | 1988—1992 | 0–1–0 1989 Duisburg ATH silver: 10000 m |
| Rommel Pacheco | MEX |
DIV | Olympics / Other | 2004—2020 | 1–2–5 2005 İzmir DIV gold: platform, bronze: synchronized platform; 2007 Bangkok DIV bronze: 3 m springboard; 2009 Beograd DIV silver: platform; 2011 Shenzhen DIV silver: synchronized springboard, bronze: platform, synchronized platform and team |
| Doug Padilla | USA |
ATH | Olympics | 1984—1988 | 1–0–0 1981 București ATH gold: 5000 m |
| Nazario Padrón | ESP |
SWM | Olympics | 1964 | 0–1–0 1963 Porto Alegre SWI silver: 200 m breaststroke |
| Maria Pădurariu | ROU |
ROW | Olympics | 1992 | 1–0–0 1993 Buffalo ROW gold: quadruple sculls |
| Pae Gil-Su | PRK |
GAR | Olympics | 1992—2000 | 1–0–0 1991 Sheffield GYM gold: horizontal bar |
| Ramona Pagel | USA |
ATH | Olympics | 1984—1996 | 0–0–1 1985 Kobe ATH bronze: shot put |
| Pak Yong-Ryong | PRK |
DIV | Olympics | 2000—2004 | 0–2–1 2001 Beijing DIV silver: synchronized platform; 2003 Daegu DIV silver: synchronized platform; 2007 Bangkok DIV bronze: synchronized platform |
| Ali Pakdaman | IRI |
FEN | Olympics | 2016—2020 | 0–1–0 2017 Taipei FEN silver: sabre team |
| Santa Pakenytė | LTU |
JUD | Olympics | 2016 | 0–1–2 2015 Gwangju JUD bronze: heavyweight +78 kg; 2017 Taipei JUD silver: heavyweight +78 kg, bronze: open class |
| Yuliya Pakhalina | RUS |
DIV | Olympics | 2000—2008 | 1–0–1 1999 Palma de Mallorca DIV gold: 1 m springboard, bronze: 3 m springboard |
| Igor Paklin | KGZ URS EUN |
ATH | Olympics | 1988—1992 | 2–0–0 1983 Edmonton ATH gold: high jump (competed for the Soviet Union); 1985 Kobe ATH gold: high jump (competed for the Soviet Union) |
| Rolando Palacios | HON |
ATH | Olympics / Other | 2008—2016 | 1–0–0 2009 Beograd ATH gold: 100 m |
| Vita Palamar | UKR |
ATH | Olympics | 2000—2008 | 1–0–0 2001 Beijing ATH gold: high jump |
| Kateryna Palekha | UKR |
ARC | Olympics | 2004—2012 | 0–2–1 2003 Daegu ARC bronze: recurve team; 2005 İzmir ARC silver: recurve and recurve team |
| Justine Palframan | RSA |
ATH | Olympics | 2016 | 1–1–1 2013 Kazan ATH bronze: 4×400 m relay; 2015 Gwangju ATH gold: 400 m; 2017 Taipei ATH silver: 400 m |
| Kerstin Palm | SWE |
FEN | Olympics | 1964—1988 | 1–0–0 1967 Tokyo FEN gold: foil |
| Ever Palma | MEX |
ATH | Olympics | 2012—2016 | 0–1–0 2017 Taipei ATH silver: 20 km walk team |
| Isaac Palma | MEX |
ATH | Olympics | 2012—2020 | 0–1–0 2017 Taipei ATH silver: 20 km walk team |
| Ana Belén Palomo | ESP |
SWM | Olympics | 2000—2004 | 0–0–1 1999 Palma de Mallorca SWI bronze: 50 m freestyle |
| Airinė Palšytė | LTU |
ATH | Olympics | 2012—2020 | 1–1–1 2011 Shenzhen ATH silver: high jump; 2015 Gwangju ATH gold: high jump; 2017 Taipei ATH bronze: high jump |
| Gregorio Paltrinieri | ITA |
OWS/SWM | Olympics | 2012—2020 | 3–0–0 2017 Taipei SWI gold: 800 m freestyle, 1500 m freestyle, and 10 km |
| Buoban Pamang | THA |
ATH | Olympics | 2008 | 1–0–0 2007 Bangkok ATH gold: javelin throw |
| Pan Qiang | CHN |
SHO | Olympics | 2016 | 1–1–0 2011 Shenzhen SHO gold: double trap team, silver: double trap |
| Pan Wei | CHN |
BKB | Olympics | 2004 | 1–1–0 2001 Beijing BAS silver; 2003 Daegu BAS gold |
| Aleksandr Panfilov | URS UZB |
CTR | Olympics | 1980 | 1–0–0 1983 Edmonton CYC gold: 1000 m time trial |
| Pang Fengyue | CHN |
FBL | Olympics | 2016 | 1–0–0 2011 Shenzhen FTB gold |
| Pang Jiaying | CHN |
SWM | Olympics | 2004—2012 | 2–2–2 2003 Daegu SWI gold: 4×200 m freestyle relay and 4×100 m medley relay, bronze: 200 m freestyle and 4×100 m freestyle relay; 2007 Bangkok SWI silver: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Pang Qiong | CHN |
GRY | Olympics | 1988 | 0–0–1 1991 Sheffield RGY bronze: clubs |
| Pang Wei | CHN |
SHO | Olympics | 2008—2020 | 3–4–1 2011 Shenzhen SHO gold: 50 m free pistol team, silver: 10 m air pistol and 10 m air pistol team; 2013 Kazan SHO gold: 50 m free pistol and 25 m standard pistol team, silver: 10 m air pistol and 10 m air pistol team, bronze: 50 m free pistol team |
| Nikolay Pankin | RUS URS |
SWM | Olympics | 1968—1976 | 3–2–0 1970 Torino SWI gold: 100 m breaststroke, silver: 200 m breaststroke and 4×100 m medley relay; 1973 Moskva SWI gold: 100 m breaststroke and 200 m breaststroke |
| Stefano Pantano | ITA |
FEN | Olympics | 1988—1992 | 3–1–0 1983 Edmonton FEN gold: épée team; 1987 Zagreb FEN gold: épée team, silver: épée; 1989 Duisburg FEN gold: épée team |
| Kseniya Panteleieva | UKR |
FEN | Olympics | 2012—2016 | 1–0–2 2013 Kazan FEN bronze: épée team; 2017 Taipei FEN gold: épée team, bronze: épée |