List of Olympic competitors (Om–Oz)

A number of sportspeople have competed in the Olympic Games since the first modern edition in 1896. Though participation fluctuates by edition, approximately 2,900 athletes compete at each Winter Olympics while over 10,000 compete at each Summer Olympics, with the 2016 Summer Olympics holding the record for the most athletes at 11,238. ^{[1] [2]}

This is an alphabetic list of Olympians who competed in a medal event at a modern Olympic Games. Only athletes that competed in at least one senior-level Olympic Games are included, with each athlete's Olympic participation listed along with their sports and nations represented. ^[3]

List of Olympic competitors

• A–B: Aa–Ak
• Al–Am
• An–Aq
• Ar–Az
• Baa–Baq
• Bar–Bd
• Bea–Ben
• Beo–Bi
• Bj–Bom
• Bon–Bq
• Br–Bt
• Bu–Bz
  C–E:
• Caa–Car
• Cas–Chd
• Che–Chz
• Ci–Coq
• Cor–Cz
• Da–Dd
• De–Dh
• Di–Dq
• Dr–Dz
• Ea–Em
• En–Ez
  F–H:
• Fa–Fh
• Fi–Fo
• Fp–Fz
• Ga
• Gb–Gk
• Gl–Go
• Gp–Gr
• Gs–Gz
• Haa–Han
• Hao–Hej
• Hek–Hn
• Ho–Hq
• Hr–Hz
  I–L:
• Ia–Iz
• Ja–Jh
• Ji–Jz
• Kaa–Kas
• Kat–Kh
• Ki
• Kj–Kol
• Kom–Kq
• Kr–Kt
• Ku–Kz
• La–Ld
• Le–Lh
• Li–Ln
• Lo–Lz
  M–N:
• Maa–Mam
• Man–Mar
• Mas–Mcj
• Mck–Mh
• Mi–Mn
• Moa–Mor
• Mos–Mz
• Na–Nh
• Ni–Nz
  O–R:
• Oa–Ol
• Om–Oz
• Paa–Par
• Pas–Peq
• Per–Ph
• Pi–Pn
• Po–Pq
• Pr–Qz
• Ra–Rd
• Re–Ril
• Rim–Rom
• Ron–Rz
  S–T:
• Saa–Sam
• San–Sb
• Sc–Sd
• Se–Sg
• Sh
• Si
• Sj–Sn
• So–Sr
• Ss–Stf
• Stg–Stz
• Su–Sz
• Ta–Tb
• Tc–Th
• Ti–Tq
• Tr–Tz
  U–Z:
• Ua–Uz
• Va–Vd
• Ve–Vik
• Vil–Vz
• Wa–Wd
• We–Wik
• Wil–Wz
• X–Y
• Za–Zg
• Zh–Zz

Name	Nation	Sport	Games	Notes
Om Jong-guk	North Korea	Weightlifting	1976 Summer
Om Jong-ran		Football	2008 Summer
Om Yun-chol		Weightlifting	2012 Summer, 2016 Summer
Majemite Omagbaluwaje	Nigeria	Judo	1988 Summer, 1992 Summer, 2000 Summer
Florence Omagbemi		Football	2000 Summer
Jimmy Omagbemi		Athletics	1960 Summer, 1964 Summer
Gerard O'Mahony	Australia	Boxing	2004 Summer, 2008 Summer
Khalifa Bin Omair	United Arab Emirates	Road cycling	1988 Summer, 1992 Summer
Lubna Al-Omair	Saudi Arabia	Fencing	2016 Summer
Eugene Omalla	Netherlands	Athletics	2024 Summer
Kieran O'Malley	Great Britain	Volleyball	2012 Summer
Terry O'Malley	Canada	Ice hockey	1964 Winter, 1968 Winter, 1980 Winter
Miro Oman	Yugoslavia	Ski jumping	1964 Winter
Paul Sewe Omany	Kenya	Field hockey	1988 Summer
Abdul Omar	Ghana	Boxing	2016 Summer
Abdul Rahman Omar	Kenya	Shooting	1972 Summer
Ahmed Omar	Morocco	Road cycling	1960 Summer
Ali Omar	Libya	Judo	2020 Summer
Bashar Omar	Kuwait	Athletics	2004 Summer
Samia Yusuf Omar	Somalia		2008 Summer
Yahia Omar	Egypt	Handball	2020 Summer, 2024 Summer
Youssef Ali Omar		Athletics	1952 Summer
Frank O'Mara	Ireland		1984 Summer, 1988 Summer, 1992 Summer
Linus Omark	Sweden	Ice hockey	2018 Winter
Artur Omarov	Czech Republic	Wrestling	2020 Summer
Magomed Omarov	Russia	Boxing	2012 Summer
Anna Omarova		Athletics	2008 Summer
Kano Omata	Japan	Artistic swimming	2016 Summer
Paul Omba-Biongolo	France	Boxing	2016 Summer
Dennis Ombachi	Kenya	Rugby sevens	2016 Summer
François Ombanzi	Democratic Republic of the Congo	Road cycling	1968 Summer
Orlann Oliere	France	Athletics	2020 Summer, 2024 Summer
Nelson Ombito	Kenya	Judo	1988 Summer
Ryan O'Meara	United States	Figure skating	2006 Winter
Juan Omedes	Spain	Rowing	1948 Summer, 1952 Summer
Luis Omedes			1924 Summer
Luis Omedes		Rowing, Luge	1952 Summer, 1968 Winter
Igor Omelchenko	Soviet Union	Swimming	1976 Summer
Sergey Omelchenko		Nordic combined	1980 Winter
Oleh Omelchuk	Ukraine	Shooting	2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer
Jeanne Omelenchuk	United States	Speed skating	1960 Winter, 1968 Winter, 1972 Winter
Mariya Omelianovych	Soviet Union	Rowing	1988 Summer
Igor Omelin	Russian Olympic Committee	Freestyle skiing	2018 Winter, 2022 Winter
Rafał Omelko	Poland	Athletics	2016 Summer
Viktor Omelyanovich	Soviet Union	Rowing	1988 Summer
Akuoma Omeoga	Nigeria	Bobsleigh	2018 Winter
Thierry Omeyer	France	Handball	2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer
Jarl Omholt-Jensen	Canada	Cross country skiing	1972 Winter
Ireneusz Omięcki	Poland	Rowing	1988 Summer
Navina Omilade	Germany	Football	2004 Summer
Steve Omischl	Canada	Freestyle skiing	2002 Winter, 2006 Winter, 2010 Winter
Masashi Omiya	Japan	Road cycling	1960 Summer, 1964 Summer
Wim Omloop	Belgium		1992 Summer
Manfred Ommer	West Germany	Athletics	1972 Summer
Harcourt Ommundsen	Great Britain	Shooting	1908 Summer, 1912 Summer
Gilbert Omnès	France	Athletics	1948 Summer
Philippe Omnès		Fencing	1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer
Sylvester Omodiale	Nigeria	Athletics	2000 Summer
Bright Omokaro		Football	1988 Summer
Amos Omolo	Uganda	Athletics	1964 Summer, 1968 Summer
Kasmiro Omona		Boxing	1988 Summer
James Omondi	Kenya		1984 Summer
Michael Omondi		Field hockey	1984 Summer, 1988 Summer
Sinaida Omondi		Rugby sevens	2020 Summer
Elizabeth Omoregie	Slovenia	Handball	2024 Summer
Shigekazu Ōmori	Japan	Athletics	1996 Summer
Shigenori Omori			1984 Summer
Janet Omorogbe	Nigeria		1968 Summer
Loveth Omoruyi	Italy	Volleyball	2024 Summer
Roland Omoruyi	Nigeria	Boxing	1980 Summer, 1984 Summer
Nuni Omot	South Sudan	Basketball	2024 Summer
Titus Omotara	Nigeria	Table tennis	1988 Summer
Olajide Omotayo			2020 Summer, 2024 Summer
Hideki Omoto	Japan	Rowing	2016 Summer
Rika Omoto		Swimming	2020 Summer
Sakurako Omoto		Field hockey	2020 Summer, 2024 Summer
Omolara Ogunmakinju	Nigeria	Athletics	2012 Summer, 2016 Summer
Naser Al-Omran	Kuwait	Football	2000 Summer
Nasser Al-Omran	Saudi Arabia		2020 Summer
Mohamed Omrani	Tunisia	Taekwondo	2004 Summer
Nataliya Omsheva	Soviet Union	Luge	1972 Winter
Ragnar Omtvedt	United States	Cross country skiing, Nordic combined	1924 Winter
Asumi Ōmura	Japan	Canoe sprint	2012 Summer
Kanako Omura		Volleyball	2004 Summer, 2008 Summer
Waichiro Omura		Football	1956 Summer
Ferdinand Omanyala	Kenya	Athletics	2020 Summer, 2024 Summer
Curt Onalfo	United States	Football	1992 Summer
Nelson Onana	Belgium	Field hockey	2024 Summer
Jennifer Onasanya	Austria	Bobsleigh	2022 Winter
Givi Onashvili	Soviet Union	Judo	1972 Summer
Nelson Oñate	Cuba	Shooting	1968 Summer
Kōshirō Onchi	Japan	Art competitions	1932 Summer
Chawalit On-Chim	Thailand	Boxing	1972 Summer
Donald Onchiri	Kenya	Athletics	1996 Summer
Noelia Oncina	Spain	Handball	2004 Summer
Jaime Oncins	Brazil	Tennis	1992 Summer, 2000 Summer
Eyüp Öncü	Turkey	Equestrian jumping	1948 Summer
Masashi Onda	Japan	Field hockey	1968 Summer
Yoshie Onda		Figure skating	2002 Winter
Yuichi Onda		Cross country skiing	2006 Winter, 2010 Winter, 2014 Winter
Christopher Ondaatje	Canada	Bobsleigh	1964 Winter
Ahmet Önder	Turkey	Artistic gymnastics	2020 Summer, 2024 Summer
Kennedy Ondiek	Kenya	Athletics	1988 Summer, 1992 Summer
Yobes Ondieki			1988 Summer, 1992 Summer
Chiara Ondoli	Italy	Rowing	2020 Summer
Oriane Ondono	France	Handball	2024 Summer
Adam Ondra	Czech Republic	Sport climbing	2020 Summer, 2024 Summer
Ladislav Ondřej	Czechoslovakia	Shooting	1952 Summer
Marcos Ondruska	South Africa	Tennis	1996 Summer
Lacey O'Neal	United States	Athletics	1964 Summer, 1972 Summer
Shaquille O'Neal		Basketball	1996 Summer
Denis O'Neil	Australia	Sailing	1972 Summer, 1976 Summer
John O'Neil	United States	Rugby	1920 Summer, 1924 Summer
Barry O'Neill	Ireland	Sailing	1976 Summer
Brandon O'Neill	Canada	Artistic gymnastics	2008 Summer
Brian O'Neill	United States	Ice hockey	2018 Winter, 2022 Winter
Darren O'Neill	Ireland	Boxing	2012 Summer
Frank O'Neill	Australia	Swimming	1952 Summer
Jennifer O'Neill	Puerto Rico	Basketball	2020 Summer
John O'Neill	United States	Field hockey	1996 Summer
Mary O'Neill		Fencing	1988 Summer, 1992 Summer
Nathan O'Neill	Australia	Road cycling	2000 Summer
Patrick O'Neill	United States	Handball	1976 Summer
Sean O'Neill		Table tennis	1988 Summer, 1992 Summer
Sean O'Neill	Ireland, New Zealand	Rowing	2008 Summer, 2012 Summer
Shane O'Neill	Australia	Skateboarding	2020 Summer, 2024 Summer
Susie O'Neill		Swimming	1992 Summer, 1996 Summer, 2000 Summer
Taylah O'Neill		Freestyle skiing	2014 Winter
Uma O'Neill	New Zealand	Equestrian jumping	2020 Summer
George Onekea	United States	Swimming	1956 Summer
Aycan Önel	Turkey	Athletics	1960 Summer
Cahit Önel			1948 Summer, 1952 Summer, 1960 Summer, 1964 Summer
Cemal Öner		Boxing	1984 Summer
Vanina Oneto	Argentina	Field hockey	1996 Summer, 2000 Summer, 2004 Summer
Théophile Onfroy	France	Rowing	2016 Summer
Valentin Onfroy			2016 Summer
Allen Ong	Malaysia	Swimming	2000 Summer, 2004 Summer
Ally Ong		Shooting	1976 Summer
Ong Ching-ming	Chinese Taipei	Alpine skiing	1984 Winter, 1988 Winter, 1992 Winter
Deborah Ong	Singapore	Sailing	2008 Summer
Ong Ewe Hock	Malaysia	Badminton	1996 Summer, 2000 Summer
Jeffrey Ong		Swimming	1988 Summer, 1992 Summer
Ong Kiat Guan	Singapore	Basketball	1956 Summer
Leonard Ong		Sailing	2016 Summer
Ong Mei Lin	Malaysia	Swimming	1972 Summer
Mylene Ong	Singapore		2012 Summer
Thomas Ong	Philippines	Judo	1964 Summer
Tom Ong		Shooting	1972 Summer, 1976 Summer
Ileana Ongar	Italy	Athletics	1976 Summer
Franco Ongarato		Road cycling	1972 Summer
Christine Ongare	Kenya	Boxing	2020 Summer
Renato Ongari	Italy	Canoe sprint	1960 Summer
Alex Ongaro	Canada	Track cycling	1984 Summer
Busanan Ongbamrungphan	Thailand	Badminton	2020 Summer
Gisèle Ongollo	Gabon	Athletics	1984 Summer, 1988 Summer
Gabrielle Onguéné	Cameroon	Football	2012 Summer
Miye Oni	Nigeria	Basketball	2020 Summer
Chow On-iam	Thailand	Football	1968 Summer
Étienne Onimus	France	Basketball	1936 Summer
Boris Onishchenko	Soviet Union	Modern pentathlon	1968 Summer, 1972 Summer, 1976 Summer
Anatoly Onishchuk		Shooting	1968 Summer
Junko Onishi	Japan	Swimming	2000 Summer, 2004 Summer
Katsumasa Onishi		Shooting	1992 Summer
Kazumi Onishi		Figure skating	1968 Winter, 1972 Winter
Misaki Onishi		Athletics	2016 Summer
Yoshihiro Onishi		Rowing	1964 Summer
Kyriakos Onisiforou	Greece	Athletics	1972 Summer
Miyabi Onitsuka	Japan	Snowboarding	2018 Winter, 2022 Winter
Luiz Onmura	Brazil	Judo	1980 Summer, 1984 Summer, 1988 Summer
Greta Onnela	Finland	Diving	1928 Summer
Eike Onnen	Germany	Athletics	2016 Summer
Imke Onnen			2020 Summer, 2024 Summer
Yuka Ono	Japan	Canoe sprint	2020 Summer
Hiroshi Ono		Weightlifting	1972 Summer
Hiroto Ono		Breaking	2024 Summer
Hitoshi Ono		Baseball	1996 Summer
Isao Ono		Ice hockey	1960 Winter, 1964 Winter
Isao Ono		Biathlon	1968 Winter, 1972 Winter, 1976 Winter
Kiyoko Ono		Artistic gymnastics	1960 Summer, 1964 Summer
Mayumi Ono		Field hockey	2008 Summer, 2016 Summer
Misao Ono		Athletics	1932 Summer
Mitsuki Ono		Snowboarding	2022 Winter
Ryuji Ono		Athletics	2004 Summer
Satomi Ono		Ice hockey	1998 Winter
Seiji Ono		Table tennis	1988 Summer
Shinji Ono		Football	2004 Summer
Shohei Ono		Judo	2016 Summer, 2020 Summer
Shoko Ono		Ice hockey	2018 Winter
Takashi Ono		Artistic gymnastics	1952 Summer, 1956 Summer, 1960 Summer, 1964 Summer
Takashi Ono		Judo	2008 Summer
Yūdai Ōno		Baseball	2020 Summer
Yumiko Ono		Swimming	1968 Summer
Yusaku Ono		Weightlifting	1972 Summer, 1976 Summer
Himeka Onoda	Australia	Rhythmic gymnastics	2020 Summer
Kazuo Onoda	Japan	Swimming	1924 Summer
Toshiya Onoda		Bobsleigh	1998 Winter
Ginwoo Onodera		Skateboarding	2024 Summer
Kaho Onodera		Curling	2014 Winter
Shiho Onodera		Football	1996 Summer
Taishi Onodera		Volleyball	2020 Summer, 2024 Summer
Henrietta Ónodi	Hungary	Artistic gymnastics	1992 Summer, 1996 Summer
József Ónody		Swimming	1908 Summer
Marta Onofre	Portugal	Athletics	2016 Summer
Rogelio Onofre	Philippines		1960 Summer, 1964 Summer, 1968 Summer
Constantin Onofrei	Romania	Boxing	2000 Summer
Taisiia Onofriichuk	Ukraine	Rhythmic gymnastics	2024 Summer
Tomoko Onogi	Japan	Swimming	1988 Summer
Ella Onojuvwevwo	Nigeria	Athletics	2024 Summer
Blessing Onoko		Boxing	1988 Summer
Mariya Onolbayeva	Russia	Ice hockey	2010 Winter
Viktoriia Onopriienko	Ukraine	Rhythmic gymnastics	2020 Summer
Galina Onopriyenko	Unified Team	Handball	1992 Summer
Pürevjavyn Önörbat	Mongolia	Wrestling	2012 Summer, 2016 Summer
Bernardo Onori	Italy	Boxing	1976 Summer
Steve Onosai	Samoa	Rugby sevens	2024 Summer
Ryoko Onozawa	Japan	Speed skating	1972 Winter
Ayana Onozuka		Freestyle skiing	2014 Winter, 2018 Winter
Mārtiņš Onskulis	Latvia	Alpine skiing	2014 Winter
Vedat Önsoy	Turkey	Boxing	1984 Summer
Franke Onsrud	Norway	Shooting	1924 Summer
Jacob Onsrud			1920 Summer
Raghu Raj Onta	Nepal	Athletics	1980 Summer
Lombardo Ontiveros	Mexico	Beach volleyball	2016 Summer
Juraj Ontko	Czechoslovakia	Canoe slalom	1992 Summer
Kenji Onuma	Japan	Weightlifting	1956 Summer, 1960 Summer
Ifeoma Onumonu	Nigeria	Football	2024 Summer
Anyika Onuora	Great Britain	Athletics	2012 Summer, 2016 Summer
Aydin Onur	Turkey		1960 Summer
Hilaire Onwanlélé-Ozimo	Gabon		1992 Summer
Ngozi Onwumere	Nigeria	Bobsleigh	2018 Winter
Udodi Onwuzurike		Athletics	2024 Summer
Henry Onwuzuruike		Football	2000 Summer
Vincent Onyala	Kenya	Rugby sevens	2020 Summer, 2024 Summer
Mary Onyali-Omagbemi	Nigeria	Athletics	1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer
Frederick Onyancha	Kenya		1996 Summer
Chioma Onyekwere	Nigeria		2024 Summer
Emeka Onyemaechi		Judo	2004 Summer
Josephine Onyia	Spain	Athletics	2008 Summer
Dismus Onyiego	Kenya	Shooting	1968 Summer, 1972 Summer
Oleksandr Onyshchenko	Ukraine	Equestrian jumping	2008 Summer, 2012 Summer
Volodymyr Onyshchenko	Soviet Union	Football	1972 Summer, 1976 Summer
Isabela Onyshko	Canada	Artistic gymnastics	2016 Summer
Somporn Onzhim	Thailand	Shooting	1976 Summer
Reshmie Oogink	Netherlands	Taekwondo	2016 Summer
Ooi Hock Lim	Malaysia	Athletics	1968 Summer
May Ooi	Singapore	Swimming	1992 Summer
Ooi Tze Liang	Malaysia	Diving	2016 Summer
Appel Ooiman	Netherlands	Rowing	1928 Summer
Karl Oole	Estonia	Weightlifting	1936 Summer
Karel Oomen	Belgium	Wrestling	1960 Summer
Hendrik Ooms	Netherlands	Track cycling	1936 Summer
Piet Ooms		Swimming, Water polo	1908 Summer
Willem Ooms		Track cycling	1920 Summer
Oon Jin Gee	Singapore	Swimming	1984 Summer, 1988 Summer
Oon Jin Teik			1984 Summer
Ab Oord	Netherlands	Weightlifting	1924 Summer
George Ooro	Kenya	Rugby sevens	2024 Summer
Lorisa Oorzhak	Russia	Wrestling	2004 Summer
Maxime Van Oost	Belgium	Field hockey	2024 Summer
Marlies Oostdam	New Zealand	Football	2008 Summer
Leendert van Oosten	Netherlands	Wrestling	1908 Summer
Jan Oosterbaan		Volleyball	1964 Summer
Jack Oosterlaak	South Africa	Athletics	1920 Summer
Emma Oosterwegel	Netherlands		2020 Summer, 2024 Summer
Jan Oosthoek		Football	1924 Summer
Anel Oosthuizen	South Africa	Athletics	2016 Summer
John Robert Oosthuizen			2008 Summer
Ryan Oosthuizen		Rugby sevens	2024 Summer
Soesoe van Oostrom Soede	Netherlands	Water polo	1936 Summer
Job van Oostrum		Bobsleigh	1984 Winter
Shigetaka Oyama	Japan	Shooting	2020 Summer
Vegard Opaas	Norway	Ski jumping	1984 Winter, 1988 Winter
Alexandra Opachanova	Kazakhstan	Rowing	2008 Summer
Maksim Opalev	Russia	Canoe sprint	2000 Summer, 2004 Summer, 2008 Summer
Christy Opara-Thompson	Nigeria	Athletics	1992 Summer, 1996 Summer
Charity Opara			1996 Summer, 2000 Summer
Eberechi Opara		Football	2000 Summer
Jerzy Opara	Poland	Canoe sprint	1972 Summer, 1976 Summer
Ngozi Opara	Nigeria	Handball	1992 Summer
Mobi Oparaku		Football	1996 Summer
Zoltán Opata	Hungary		1924 Summer
Markus Opatril	Austria	Swimming	1988 Summer
Stefan Opatril			1988 Summer
Aleš Opatrný	Czech Republic	Equestrian jumping	2020 Summer
Jiří Opavský	Czechoslovakia	Road cycling, Track cycling	1956 Summer
Jacob Opdahl	Norway	Artistic gymnastics	1912 Summer, 1920 Summer
Nils Opdahl			1912 Summer
Kåre Opdal		Alpine skiing	1956 Winter
Englebert Opdebeeck	Belgium	Road cycling	1968 Summer
Don Opeloge	Samoa	Weightlifting	2024 Summer
Ele Opeloge			2008 Summer, 2012 Summer
Mary Opeloge			2016 Summer
Arina Openysheva	Russia	Swimming	2016 Summer
Stéphane Operto	Monaco	Road cycling	1988 Summer
Motu Opetai	Samoa	Rugby sevens	2024 Summer
Jai Opetaia	Australia	Boxing	2012 Summer
Anuoluwapo Juwon Opeyori	Nigeria	Badminton	2020 Summer, 2024 Summer
Roland Opfer	Germany	Rowing	1996 Summer
Alf Opheim	Norway	Alpine skiing	1948 Winter, 1952 Winter
Jason Opicho	Kenya	Athletics	1984 Summer
John Opio	Uganda	Boxing	1972 Summer
Ferdinand Opitz	Austria	Art competitions	1928 Summer, 1936 Summer, 1948 Summer
Lucille Opitz	Germany	Speed skating	2006 Winter
Simone Opitz	East Germany, Germany	Cross country skiing	1988 Winter, 1992 Winter
Jaroslav Oplt	Czechoslovakia	Rowing	1920 Summer
Zdeněk Opočenský		Artistic gymnastics	1920 Summer
Isaac Opoku	Ghana	Table tennis	1996 Summer
Patience Opokua			1992 Summer
Samuel Opone	Nigeria	Football	1968 Summer
Arturo Oporta	Panama	Wrestling	1988 Summer
Peter Oppegard	United States	Figure skating	1988 Winter
Craig Oppel		Swimming	1988 Summer
Hermann von Oppeln-Bronikowski	Germany	Equestrian dressage	1936 Summer
Britta Oppelt		Rowing	2004 Summer, 2008 Summer, 2012 Summer
Kurt Oppelt	Austria	Figure skating	1952 Winter, 1956 Winter
Paul Opperman	Ireland	Athletics	2000 Summer
Antonio Oppes	Italy	Equestrian jumping	1960 Summer
Salvatore Oppes		Equestrian jumping, Equestrian eventing	1952 Summer, 1956 Summer
Luděk Oppl	Czechoslovakia	Fencing	1924 Summer
Alexander Oppler	Germany	Art competitions	1928 Summer
Ernst Oppler			1928 Summer
Emanuel Oppliger	Australia	Snowboarding	2006 Winter
Paulo Oppliger	Chile	Alpine skiing	1988 Winter, 1992 Winter
Martine Oppliger-Bouchonneau	Switzerland	Athletics	1988 Summer
Stefano Oppo	Italy	Rowing	2016 Summer, 2020 Summer, 2024 Summer
Anișoara Oprea	Romania	Diving	1996 Summer, 2000 Summer
Elena Oprea		Rowing	1976 Summer, 1980 Summer
Laura Oprea			2016 Summer
Marian Oprea		Athletics	2004 Summer, 2008 Summer, 2016 Summer
Ovidiu Oprea		Cycling mountain bike	2004 Summer
Vasile Oprea		Handball	1984 Summer
Nicolae Oprescu		Artistic gymnastics	1972 Summer, 1976 Summer, 1980 Summer
Deyvid Oprja	Estonia	Alpine skiing	2006 Winter, 2010 Winter
Allan Opsahl	United States	Ice hockey	1948 Winter
Morten Opsahl	Norway	Canoe sprint	1976 Summer
Frank Opsal	Canada	Shooting	1956 Summer
Helmut Opschruf	Germany	Weightlifting	1936 Summer
Silje Opseth	Norway	Ski jumping	2018 Winter, 2022 Winter
Sören Opti	Suriname	Badminton	2016 Summer, 2024 Summer
Imogene Opton	United States	Alpine skiing	1952 Winter
Samson Opuakpo	Nigeria	Swimming	2016 Summer
Adrián Oquendo	Cuba	Rowing	2016 Summer
Alexandra Oquendo	Puerto Rico	Volleyball	2016 Summer
Carlos Oquendo	Colombia	Cycling BMX racing	2012 Summer, 2016 Summer
Gar O'Quinn	United States	Artistic gymnastics	1960 Summer
Josefine Öqvist	Sweden	Football	2004 Summer, 2008 Summer
Tomer Or	Israel	Fencing	2008 Summer
Rita Oraá	Spain	Volleyball	1992 Summer
Ibrahim Orabi	Egypt	Wrestling	1936 Summer, 1948 Summer
Abdelrahman Oraby		Boxing	2016 Summer, 2020 Summer, 2024 Summer
Gianfranco Oradini	Italy	Sailing	1976 Summer
Ghanim Oraibi	Iraq	Football	1988 Summer
Hamid Oraibi		Road cycling	1960 Summer
Orel Oral	Turkey	Swimming	2000 Summer, 2004 Summer
Aibek Oralbay	Kazakhstan	Boxing	2024 Summer
Nurbek Oralbay			2024 Summer
Niilo Orama	Finland	Sailing	1948 Summer
Juan Pablo Oramas	Mexico	Baseball	2020 Summer
Robert Oramas	Venezuela	Volleyball	2020 Summer
Narcisco Orán	Panama	Weightlifting	1976 Summer
Mitja Oranič	Slovenia	Nordic combined	2010 Winter, 2014 Winter
John Oravainen	Australia	Swimming	1964 Summer
Roman Oravec	Czech Republic	Athletics	2000 Summer
Askar Orazalinov	Kazakhstan	Water polo	2000 Summer
Olzhas Orazaliyev		Boxing	2000 Summer
Bauyrzhan Orazgaliyev		Wrestling	2004 Summer, 2008 Summer
Orban	Belgium	Equestrian driving	1900 Summer
Alex Orban	United States	Fencing	1968 Summer, 1972 Summer, 1976 Summer
Árpád Orbán	Hungary	Football	1964 Summer
Éva Orbán		Athletics	2004 Summer, 2008 Summer, 2012 Summer
Ferenc Orbán			1928 Summer
Frank Orban	Belgium	Track cycling	1984 Summer
József Orbán	Hungary	Wrestling	1988 Summer
Kurt Orban	United States	Field hockey	1948 Summer, 1956 Summer
László Orbán	Hungary	Boxing	1972 Summer
László Orbán		Shooting	1980 Summer
Nándor von Orbán		Modern pentathlon	1936 Summer
Rémy Orban	Belgium	Rowing	1908 Summer
Sándor Orbán	Hungary	Boxing	1976 Summer
Sarah Orban	Canada	Track cycling	2024 Summer
Hasan Orbay	Turkey	Archery	2000 Summer, 2004 Summer
David Orbell	Australia	Swimming	1984 Summer
Rachelle de Orbeta	Puerto Rico	Athletics	2024 Summer
Ecaterina Orb-Lazăr	Romania	Fencing	1956 Summer, 1960 Summer
Bernard Orcel	France	Alpine skiing	1968 Winter, 1972 Winter
Ashleigh Orchard	Ireland	Rugby sevens	2024 Summer
Simon Orchard	Australia	Field hockey	2012 Summer, 2016 Summer
William Orchard		Water polo	1952 Summer, 1956 Summer
Gordon Orchardson	Great Britain	Field hockey	1908 Summer
László Orczán	Hungary	Track cycling	1936 Summer
Damian Ordás	Argentina	Rowing	2000 Summer
Cuthbert Orde	Great Britain	Art competitions	1932 Summer
Pablo Ordejón	Spain	Fencing	1960 Summer
Richard Ordemann	Norway	Taekwondo	2020 Summer, 2024 Summer
Antonina Ordina	Sweden	Cross country skiing	1994 Winter, 1998 Winter
Tibor Ordina	Hungary	Athletics	1996 Summer
Vera Ordina	Unified Team		1992 Summer
Bjart Ording	Norway	Equestrian jumping, Equestrian eventing	1928 Summer, 1952 Summer
Max Ordman	South Africa	Wrestling	1960 Summer
Emil Ordnung	Czechoslovakia	Rowing	1920 Summer
Béla Ordódy	Hungary	Ice hockey	1928 Winter
Zsuzsa Ördög		Swimming	1956 Summer
Karl Ördögh	Austria	Field hockey	1928 Summer, 1948 Summer
Diego Ordóñez	Spain	Athletics	1920 Summer, 1924 Summer, 1928 Summer
Ignacio Ordóñez		Wrestling	1984 Summer
Johana Ordóñez	Ecuador	Athletics	2008 Summer
Saúl Ordóñez	Spain		2020 Summer
Manuel Ordovás		Equestrian jumping	1952 Summer
Antonio Oré	Peru	Basketball	1936 Summer
Martin Ore	Norway	Luge	1976 Winter
Michele Orecchia	Italy	Road cycling	1928 Summer
Joseph O'Regan	Great Britain	Water polo	2012 Summer
Henri Oreiller	France	Alpine skiing	1948 Winter, 1952 Winter
Ellis O'Reilly	Ireland	Artistic gymnastics	2016 Summer
Frank O'Reilly		Athletics	1960 Summer
Gerry O'Reilly			1988 Summer
Heather O'Reilly	United States	Football	2004 Summer, 2008 Summer, 2012 Summer
Luke O'Reilly	Great Britain	Alpine skiing	1968 Winter
Paddy O'Reilly	Ireland	Football	1924 Summer
Percy O'Reilly	Great Britain	Polo	1908 Summer
Rory O'Reilly	United States	Track cycling	1984 Summer
Wilf O'Reilly	Great Britain	Short track speed skating	1992 Winter, 1994 Winter
Eduardo Orejuela	Ecuador	Swimming	1968 Summer
Tamara Orejuela			1968 Summer
Nataliya Orekhova	Russia	Freestyle skiing	1994 Winter, 1998 Winter, 2002 Winter
Ahmet Örel	Turkey	Wrestling	1992 Summer
Alenka Orel	Slovenia	Sailing	1996 Summer
Janja Orel			1996 Summer, 2000 Summer
Carlos Orellana	Mexico	Boxing	1928 Summer
Marta Orellana	Argentina	Athletics	1996 Summer
Néstor Orellana	Mexico	Volleyball	2016 Summer
Miriam Oremans	Netherlands	Tennis	2000 Summer
Fikret Ören	Turkey	Cross country skiing	1988 Winter, 1992 Winter
Yaşar Ören			1968 Winter
Frederic Orendi	Romania	Artistic gymnastics	1952 Summer, 1964 Summer
Irina Orendi		Athletics	1928 Summer
Juan Antonio Orenga	Spain	Basketball	1992 Summer
Gilbert Orengo	Monaco	Fencing	1960 Summer
Kęstutis Orentas	Soviet Union	Athletics	1964 Summer
Lyubomir Oresharov	Bulgaria	Canoe sprint	1960 Summer
Roman Oreshnikov	Russia	Bobsleigh	2006 Winter, 2010 Winter
Aleksandar Đorđević	Serbia and Montenegro	Basketball	1996 Summer
Mina Đorđević	Serbia		2024 Summer
Joe Orewa	Nigeria	Boxing	1984 Summer
Marcel Orfidan	France	Athletics	1920 Summer
Joseph Organ	United States		1920 Summer
Metin Orgarun	Turkey	Judo	1984 Summer
Gizem Örge		Volleyball	2024 Summer
Jean-François d'Orgeix	France	Equestrian jumping	1948 Summer, 1952 Summer
Franco Orgera	Italy	Modern pentathlon	1936 Summer
Damdinsürengiin Orgodol	Mongolia	Road cycling	1980 Summer
Olga Orgonista	Hungary	Figure skating	1932 Winter
Laura Orgué	Spain	Cross country skiing	2006 Winter, 2010 Winter, 2014 Winter
Andreas Orheim	Norway	Canoe sprint	1976 Summer
Györgyi Őri	Hungary	Handball	1980 Summer
Chinedu Oriala	Nigeria	Athletics	2008 Summer
Andrea Oriana	Italy	Swimming	1996 Summer
Constanza Oriani	Argentina	Fencing	1984 Summer
Delicious Orie	Great Britain	Boxing	2024 Summer
Lasse Orimus	Finland	Athletics	1976 Summer
Sergey Orin	Tajikistan	Diving	1996 Summer
André Oriol	France	Rowing	1924 Summer
Fernand Oriol			1924 Summer
Veaceslav Oriol	Moldova	Road cycling	1996 Summer
Christian d'Oriola	France	Fencing	1948 Summer, 1952 Summer, 1956 Summer, 1960 Summer
Thomas O'Riordan	Ireland	Athletics	1964 Summer
Farkhod Oripov	Tajikistan	Swimming	2000 Summer
Valentin Orischenko	Soviet Union	Canoe sprint	1952 Summer
Samson Oriso	Kenya	Field hockey	1988 Summer
Tobias Oriwol	Canada	Swimming	2008 Summer, 2012 Summer
Keturah Orji	United States	Athletics	2016 Summer, 2020 Summer, 2024 Summer
Angie Orjuela	Colombia		2016 Summer, 2020 Summer, 2024 Summer
Arabelly Orjuela			2012 Summer
Ahmet Örken	Turkey	Road cycling	2016 Summer, 2020 Summer
Pürevdorjiin Orkhon	Mongolia	Wrestling	2016 Summer, 2024 Summer
Christian Orlainsky	Austria	Alpine skiing	1980 Winter
Valbjörn Þorláksson	Iceland	Athletics	1960 Summer, 1964 Summer, 1968 Summer
Carlo Orlandi	Italy	Boxing	1928 Summer
Giovanni-Battista Orlandi		Athletics	1920 Summer
Ivo Orlandi	Venezuela	Shooting	1968 Summer
Vittorio Orlandi	Italy	Equestrian jumping	1972 Summer
Orlando Paladino Orlandini		Art competitions	1936 Summer
Rodolfo Orlandini	Argentina	Football	1928 Summer
Alexandra Orlando	Canada	Rhythmic gymnastics	2008 Summer
Alfonso Orlando	Italy	Athletics	1912 Summer
Gaetano Orlando		Ice hockey	1994 Winter, 1998 Winter
Giovanni Orlando		Swimming	1964 Summer
John Orlando	Nigeria	Football	1980 Summer
Sergey Orlenko	Russia	Volleyball	1996 Summer
Jerzy Woyna Orlewicz	Poland	Alpine skiing	1964 Winter
Thomas Orley	United States	Fencing	1964 Summer
Maciej Orlik	Poland	Shooting	1976 Summer
Marcus Orlob	United States	Equestrian dressage	2024 Summer
Fred Orlofsky		Artistic gymnastics	1960 Summer
Andrzej Orłoś	Poland	Equestrian eventing	1960 Summer
Nikolay Orlov	Russia	Wrestling	1908 Summer
Vladimir Orlov	Soviet Union	Speed skating	1964 Winter
Vladimir Nikolayevich Orlov	Russia	Equestrian driving	1900 Summer
Yevhen Orlov	Ukraine	Wrestling	2012 Summer
Yuriy Orlov		Sailing	2004 Summer
Aleksandra Orlova	Russia, Russian Olympic Committee	Freestyle skiing	2014 Winter, 2018 Winter
Anna Orlova	Latvia	Luge	1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter, 2006 Winter, 2010 Winter
Kseniya Orlova	Russian Olympic Committee	Freestyle skiing	2022 Winter
Maria Orlova	Russia	Skeleton	2014 Winter
Nadezhda Orlova		Bobsleigh	2006 Winter
Wacław Orłowski	Poland	Wrestling	1968 Summer
Róbert Örlschléger	Hungary	Rowing	1972 Summer
Andriy Orlyk	Ukraine	Cross country skiing	2018 Winter
Carole Ormaca	United States	Figure skating	1956 Winter
Sándor Ormándi	Hungary	Rowing	1948 Summer
Bernard Ormanowski	Poland		1928 Summer
Patricio Ormazábal	Chile	Football	2000 Summer
Thalia Munro	United States	Water polo	2004 Summer
Annabelle Orme		Artistic swimming	2008 Summer
Katie Ormerod	Great Britain	Snowboarding	2022 Winter
Shelley Ormes	Australia	Handball	2000 Summer
James Ormond	Great Britain	Alpine skiing	1998 Winter
Lewis Ormond	New Zealand	Rugby sevens	2016 Summer
Sophie Ormond	Great Britain	Alpine skiing	1998 Winter
Mark Ormrod	Australia	Athletics	2004 Summer, 2008 Summer
Dan Ormsbee	United States	Art competitions	1932 Summer
Bob Ormsby		Alpine skiing	1988 Winter
Brett Ormsby		Water polo	2004 Summer
William Ormston	Great Britain	Track cycling	1920 Summer
Gunhild Ørn	Norway	Road cycling	1992 Summer
Mikael Örn	Sweden	Swimming	1984 Summer
Rolf Örn		Equestrian jumping	1936 Summer
Hélder Ornelas	Portugal	Athletics	2000 Summer, 2008 Summer
Suwan Ornkerd	Thailand	Road cycling	1964 Summer
Jan Ornoch	Poland	Athletics	1972 Summer, 1976 Summer
Stefan Örnskog	Sweden	Ice hockey	1994 Winter
Louise Ørnstedt	Denmark	Swimming	2000 Summer, 2004 Summer
Dion Ørnvold		Football	1948 Summer
Nahum Orobitg	Andorra	Alpine skiing	1988 Winter, 1992 Winter
Tarsis Orogot	Uganda	Athletics	2024 Summer
Oliver Orok	Nigeria	Weightlifting	1984 Summer
Daniela Oronova	Bulgaria	Rowing	1988 Summer, 1992 Summer, 1996 Summer
Corneliu Oros	Romania	Volleyball	1972 Summer, 1980 Summer
Tibor Oross	Hungary	Handball	1988 Summer
Csaba Orosz	Slovakia	Canoe sprint	1996 Summer
Dezső Orosz	Hungary	Wrestling	1912 Summer
Károly Orosz		Ice hockey	1964 Winter
Miklós Orosz		Wrestling	1908 Summer
Pál Orosz		Football	1960 Summer
Irén Orosz-Árva		Athletics	1972 Summer, 1980 Summer
Aoife O'Rourke	Ireland	Boxing	2020 Summer, 2024 Summer
Derval O'Rourke		Athletics	2004 Summer, 2008 Summer, 2012 Summer
Gail O'Rourke	United States	Volleyball	1964 Summer
James O'Rourke		Canoe sprint	1936 Summer
James O'Rourke Jr.			1964 Summer
Mike O'Rourke	New Zealand	Athletics	1984 Summer
Thomas O'Rourke	United States	Road cycling	1952 Summer
Aimar Oroz	Spain	Football	2024 Summer
Alejandra Orozco	Mexico	Diving	2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer
Alejandro Orózco		Equestrian jumping	1988 Summer
Armando Orozco	Cuba	Athletics	1980 Summer
Germán Orozco	Argentina	Field hockey	2000 Summer, 2004 Summer
John Orozco	United States	Artistic gymnastics	2012 Summer
Jorge Orozco	Mexico	Shooting	2020 Summer
José Clemente Orozco		Art competitions	1932 Summer
Lisseth Orozco	Colombia	Judo	2004 Summer
Michael Orozco	United States	Football	2008 Summer
Ruben Orozco	Uruguay	Modern pentathlon	1948 Summer
William Orpen	Great Britain	Art competitions	1928 Summer
Georgios Orphanidis	Greece	Shooting	1896 Summer, 1908 Summer
Brooks Orpik	United States	Ice hockey	2010 Winter, 2014 Winter
Katrina Orpwood	Australia	Artistic swimming	2000 Summer
Donald Orr	Canada	Boxing	2000 Summer
Jenny Orr	Australia	Athletics	1972 Summer
Lee Orr	Canada		1936 Summer
Meredith Orr	New Zealand	Field hockey	2004 Summer
Pete Orr	Canada	Baseball	2004 Summer
Vickie Orr	United States	Basketball	1992 Summer
Diana Orrange		Athletics	1996 Summer
Magne Orre	Norway	Road cycling	1972 Summer, 1976 Summer
Ariana Orrego	Peru	Artistic gymnastics	2016 Summer, 2020 Summer
Arne Orrgård	Sweden	Shooting	1968 Summer
Alessia Orro	Italy	Volleyball	2016 Summer, 2020 Summer, 2024 Summer
Jiří Orság	Czech Republic	Weightlifting	2012 Summer, 2016 Summer, 2020 Summer
Günter Orschel	Bulgaria	Equestrian jumping	2000 Summer
Alessandra Orselli	Italy	Athletics	1972 Summer
Brian Orser	Canada	Figure skating	1984 Winter, 1988 Winter
Stalvira Orshush	Russian Olympic Committee	Wrestling	2020 Summer
Viktoria Orsi Toth	Italy	Beach volleyball	2020 Summer
Marco Orsi		Swimming	2012 Summer, 2016 Summer
Ni Orsi Jr.	United States	Alpine skiing	1964 Winter
Raimundo Orsi	Argentina	Football	1928 Summer
Lorenzo Orsini	Australia	Weightlifting	1980 Summer
Piotr Orslowski	Poland	Luge	1998 Winter
Colleen Orsmond	South Africa	Rowing	1996 Summer, 2000 Summer
Bruno Orsoni	France	Swimming	1996 Summer
Riccardo Orsoni	Italy	Athletics	2024 Summer
Hans-Henrik Ørsted	Denmark	Track cycling	1980 Summer
Vítězslav Országh	Czechoslovakia	Weightlifting	1968 Summer
Petra Országhová	Slovakia	Ice hockey	2010 Winter
Luis Orta	Venezuela	Athletics	2016 Summer
Luis Orta	Cuba	Wrestling	2020 Summer, 2024 Summer
Alejandra Ortega	Mexico	Athletics	2016 Summer, 2024 Summer
Antonio Carlos Ortega	Spain	Handball	2000 Summer, 2004 Summer
Ariel Ortega	Argentina	Football	1996 Summer
Cristian Ortega	Colombia	Track cycling	2024 Summer
David Ortega	Spain	Swimming	2000 Summer
Francisco Ortega	Argentina	Football	2020 Summer
Gerardo Ortega	Spain		1968 Summer
Iván Ortega	Mexico	Modern pentathlon	1992 Summer
José Ortega	Spain	Boxing	1988 Summer, 1992 Summer
Mauricio Ortega	Colombia	Athletics	2016 Summer, 2020 Summer, 2024 Summer
Miguel Ortega	Mexico	Modern pentathlon	1932 Summer
Norman Ortega	Nicaragua	Shooting	1992 Summer
Omar Ortega	Argentina	Athletics	1984 Summer
Orlando Ortega	Cuba, Spain		2012 Summer, 2016 Summer
Policarpio Ortega	Philippines	Sailing	1984 Summer
Rafael Ortega	Dominican Republic	Weightlifting	1976 Summer
Vicente Ortega	Spain	Handball	1972 Summer
Víctor Ortega	Colombia	Diving	2008 Summer, 2012 Summer, 2016 Summer
Miguel Ortego	Spain	Field hockey	1988 Summer, 1992 Summer
Ruben Örtegren	Sweden	Shooting	1912 Summer
Luciano Ortelli	Italy	Wrestling	1984 Summer
Dagoberto Ortensi		Art competitions	1936 Summer, 1948 Summer
Florian Orth	Germany	Athletics	2016 Summer
György Orth	Hungary	Football	1924 Summer
Joaquin Orth	Mexico	Equestrian dressage	1996 Summer
William R. Orthwein	United States	Swimming, Water polo	1904 Summer
Oscar Ortigosa	Peru	Swimming	1984 Summer
Venanzio Ortis	Italy	Athletics	1976 Summer
Abel Ortiz	Argentina	Shooting	1948 Summer
Alberto Ortiz	Uruguay	Modern pentathlon	1948 Summer, 1952 Summer
Alejandro Ortiz	Cuba	Basketball	1976 Summer, 1980 Summer
Alejandro Ortíz	Guatemala	Football	1988 Summer
Alondra Ortiz	Costa Rica	Swimming	2024 Summer
Arturo Ortiz	Spain	Athletics	1988 Summer, 1992 Summer, 1996 Summer
Beatriz Ortiz		Water polo	2016 Summer, 2020 Summer, 2024 Summer
Carlos Ortiz	Cuba	Wrestling	2000 Summer
Carlos Ortiz	Mexico	Golf	2020 Summer, 2024 Summer
Celia Pulido Ortíz		Swimming	2024 Summer
César Ortíz		Shooting	1992 Summer
Chris Ortiz	Puerto Rico	Basketball	2024 Summer
Citlalli Ortiz	Mexico	Boxing	2024 Summer
Constancio Ortiz	Philippines	Basketball	1960 Summer
Evaristo Ortíz	Dominican Republic	Athletics	1988 Summer
Félipe Ortiz	Guatemala	Shooting	1968 Summer
Fernando Ortiz	Mexico	Athletics	1932 Summer
Fernando Ortíz		Sailing	1964 Summer
Fidel Ortiz		Boxing	1928 Summer, 1936 Summer
Francisco Ortíz	Spain	Diving	1924 Summer
Gretchen Ortiz	Puerto Rico	Sailing	2020 Summer
Idalys Ortiz	Cuba	Judo	2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer
Ignacio Ortiz	Argentina	Field hockey	2016 Summer, 2020 Summer
Ismael Ortiz	Panama	Swimming	2004 Summer
Jacqueline Ortiz	Puerto Rico	Softball	1996 Summer
Jantony Ortiz		Boxing	2012 Summer
Jesús Ortiz	Cuba	Fencing	1980 Summer
Jorge Ortíz	Puerto Rico	Athletics	1976 Summer
José Ortiz		Basketball	1988 Summer, 1992 Summer, 1996 Summer, 2004 Summer
José Ortiz	Guatemala	Athletics	2020 Summer
Julio Ortíz			1968 Summer
Lionel Ortíz	Puerto Rico	Boxing	1988 Summer
Ludwig Ortiz	Venezuela	Judo	2000 Summer, 2004 Summer, 2008 Summer
Luis Ortiz	Puerto Rico	Boxing	1984 Summer
Luis Ortiz	Colombia	Shooting	1984 Summer
Manuel Ortiz	Cuba	Fencing	1968 Summer, 1972 Summer, 1976 Summer, 1980 Summer
Mariano Ortiz	Puerto Rico	Basketball	1968 Summer, 1972 Summer, 1976 Summer
Mario Ortíz	Argentina	Sailing	1936 Summer
Mario Ortíz		Boxing	1972 Summer
Mariona Ortiz	Spain	Basketball	2024 Summer
Matilde Ortiz		Water polo	2012 Summer, 2016 Summer
Melissa Ortiz	Colombia	Football	2012 Summer
Mirna Ortiz	Guatemala	Athletics	2012 Summer, 2016 Summer, 2020 Summer
Nicolas Ortíz	Puerto Rico	Boxing	1972 Summer
Norman Ortíz	Colombia	Football	1968 Summer
Nuria Ortiz	Mexico	Shooting	1968 Summer, 1972 Summer, 1984 Summer, 1988 Summer
Óscar Ortiz		Tennis	1996 Summer
Pedro Ortíz		Athletics	1932 Summer
Pedro Ortiz	Colombia		1988 Summer
Procopio Ortíz	Mexico	Equestrian jumping	1932 Summer
Ramiro Ortiz	Puerto Rico	Shooting	1952 Summer
Silvia Ortiz	Ecuador	Athletics	2024 Summer
Tania Ortiz	Cuba	Volleyball	1992 Summer
Tatiana Ortiz	Mexico	Diving	2008 Summer
Vivian Ortiz		Swimming	1968 Summer
Willington Ortiz	Colombia	Football	1972 Summer
Yaima Ortiz	Cuba	Volleyball	2004 Summer, 2008 Summer
Yolanda Ortíz		Diving	2000 Summer, 2004 Summer
Zuleydis Ortiz		Fencing	2000 Summer
Bruno Ortiz-Cañavate	Spain	Swimming	2016 Summer
Miguel Ortiz-Cañavate			2016 Summer
Patrick Ortlieb	Austria	Alpine skiing	1992 Winter, 1994 Winter
Günther Ortmann	Germany	Handball	1936 Summer
Siegfried Ortmann	West Germany	Archery	1972 Summer
Franz Ortner	Austria	Speed skating	1936 Winter
Serena Ortolani	Italy	Volleyball	2008 Summer, 2016 Summer
Armanto Ortolano	Greece	Sailing	1984 Summer, 1988 Summer, 1992 Summer
Julien d'Ortoli	France		2016 Summer
Genevieve Orton	Canada	Canoe sprint	2016 Summer
George Orton	United States	Athletics	1900 Summer
Fernando Ortuño	Spain	Football	1968 Summer
Isabel Ortuño		Handball	2004 Summer
Valeria Ortuño	Mexico	Athletics	2020 Summer
Alejandro Ortuoste	Philippines	Boxing	1952 Summer
Stephanie Ortwig	West Germany	Swimming	1988 Summer
Richard Oruche	Nigeria	Basketball	2012 Summer
Rustam Orujov	Azerbaijan	Judo	2012 Summer, 2016 Summer, 2020 Summer
Vugar Orujov	Unified Team, Russia	Wrestling	1992 Summer, 1996 Summer
Wilson Oruma	Nigeria	Football	1996 Summer
Mohamad Orungi	Kenya	Boxing	1988 Summer
Selin Oruz	Germany	Field hockey	2016 Summer, 2020 Summer, 2024 Summer
Timur Oruz			2016 Summer, 2020 Summer
Erik Ørvig	Norway	Sailing	1920 Summer
Olaf Ørvig			1920 Summer
Thor Ørvig			1920 Summer
Eva Orvošová	Slovakia	Road cycling, Cycling mountain bike	1996 Summer
Bernice Orwig	United States	Water polo	2000 Summer
Elena Oriabinskaia	Russian Olympic Committee	Rowing	2020 Summer
Assem Orynbay	Kazakhstan	Shooting	2020 Summer, 2024 Summer
Zbigniew Orywał	Poland	Athletics	1960 Summer
Martina Orzan	Italy	Rowing	1996 Summer
Rareş Orzaţa	Romania	Artistic gymnastics	2000 Summer
Barbara Orzechowska-Ryszel	Poland	Fencing	1960 Summer
Daniel Orzechowski	Brazil	Swimming	2012 Summer
Kazimierz Orzeł	Poland	Athletics	1976 Summer
Alexander Os	Norway	Biathlon	2010 Winter
Chip Van Os	United States	Handball	1996 Summer
Yukiko Osada	Japan	Swimming	2004 Summer
Liliya Osadchaya	Soviet Union	Volleyball	1976 Summer
Alex Osadchuk	Australia	Water polo	2004 Summer
Matías Osadczuk	Argentina	Rugby sevens	2020 Summer, 2024 Summer
Andrew Osagie	Great Britain	Athletics	2012 Summer
Nafiu Osagie	Nigeria		1952 Summer
Mansoor Bu Osaiba	United Arab Emirates	Road cycling	1992 Summer
Naomi Osaka	Japan	Tennis	2020 Summer, 2024 Summer
Jun Osakada		Athletics	1996 Summer, 2000 Summer, 2004 Summer
Keiko Osaki		Diving	1964 Summer, 1968 Summer, 1972 Summer
Sakae Osaki		Athletics	1992 Summer
Yoshihiko Osaki		Swimming	1960 Summer
Akinobu Osako		Judo	1988 Summer
Suguru Osako		Athletics	2016 Summer, 2020 Summer, 2024 Summer
Daisy Osakue	Italy		2020 Summer, 2024 Summer
Oskar Osala	Finland	Ice hockey	2018 Winter
Ahmed Mohamed Osama	Sudan	Table tennis	1996 Summer
Seiichi Osanai	Japan	Wrestling	1984 Summer
Chiho Osawa		Ice hockey	2014 Winter, 2018 Winter, 2022 Winter
Masayo Ōsawa		Diving	1936 Summer
Masayuki Osawa		Swimming	1968 Summer
Reiko Ōsawa		Diving	1936 Summer
Shigetoshi Osawa		Athletics	1928 Summer
Tetsuo Osawa		Road cycling, Track cycling	1956 Summer, 1960 Summer
Tomohiro Osawa		Athletics	1988 Summer
Oludamola Osayomi	Nigeria		2004 Summer, 2008 Summer, 2012 Summer
Agnes Osazuwa			2008 Summer, 2016 Summer
Uhunoma Osazuwa			2012 Summer, 2016 Summer
Harold Osborn	United States		1924 Summer, 1928 Summer
John Osborn	Great Britain	Sailing	1976 Summer
Valda Osborn		Figure skating	1952 Winter
Alexander Osborne	United States	Rowing	2012 Summer
Coulter Osborne	Canada	Basketball	1956 Summer
Frederick Osborne	Great Britain	Boxing	1908 Summer
Hannah Osborne	New Zealand	Rowing	2020 Summer
Jason Osborne	Germany		2016 Summer, 2020 Summer
Rowan Osborne	Great Britain	Canoe slalom	1972 Summer
Manuel Osborne-Paradis	Canada	Alpine skiing	2006 Winter, 2010 Winter, 2014 Winter, 2018 Winter
Carl Osburn	United States	Shooting	1912 Summer, 1920 Summer, 1924 Summer
Ruth Osburn		Athletics	1932 Summer
Roberto Oscal	Guatemala		1996 Summer
Oscar	Brazil	Football	2012 Summer
Ricardo Oscare	Argentina	Biathlon	2002 Winter
Fernando Oscaris		Field hockey	2000 Summer
Markus Oscarsson	Sweden	Canoe sprint	1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer
Mattias Oscarsson			1996 Summer
Staffan Oscarsson		Shooting	1980 Summer
Eva Karin Oscarsson-Göthberg		Equestrian dressage	1992 Summer
Henri van Osch	Netherlands	Swimming	1964 Summer
Matthieu Osch	Luxembourg	Alpine skiing	2018 Winter, 2022 Winter
Cornelia Oschkenat	East Germany	Athletics	1988 Summer
Wolf-Dieter Oschlies	West Germany	Rowing	1976 Summer
Manuela Oschmann	Germany	Cross country skiing	1992 Winter
Felix Oschmautz	Austria	Canoe slalom	2020 Summer, 2024 Summer
Emmanuel Osei Kuffour	Ghana	Football	1996 Summer
Emmanuel Osei			2004 Summer
Kennedy Osei		Athletics	1992 Summer
Sandy Osei-Agyemang			1972 Summer
Julio César Osejo	Nicaragua	Baseball	1996 Summer
Dmytro Oseledets	Ukraine	Swimming	2016 Summer
Diego Osella	Argentina	Basketball	1996 Summer
Otto Osen	Norway	Athletics	1912 Summer
Tinus Osendarp	Netherlands		1936 Summer
Bartosz Osewski	Poland		2012 Summer
Ann Osgerby	Great Britain	Swimming	1980 Summer, 1984 Summer
Janet Osgerby			1980 Summer
Tim O'Shannessey	Australia	Track cycling	1996 Summer
Vitaliy Osharov	Ukraine	Fencing	2004 Summer
Niall O'Shaughnessy	Ireland	Athletics	1976 Summer
Stepan Oshchepkov	Soviet Union	Canoe sprint	1964 Summer
Caroline O'Shea	Ireland	Athletics	1984 Summer
Danny O'Shea	Canada	Ice hockey	1968 Winter
Glenn O'Shea	Australia	Track cycling	2012 Summer, 2016 Summer
Greg O'Shea	Ireland	Rugby sevens	2020 Summer
Mick O'Shea		Athletics	1980 Summer
Richard O'Shea		Sailing	1972 Summer
William O'Shea		Boxing	1928 Summer
T. J. Oshie	United States	Ice hockey	2014 Winter
Misaki Oshigiri	Japan	Speed skating	2014 Winter, 2018 Winter, 2022 Winter
Modupe Oshikoya	Nigeria	Athletics	1972 Summer
Hiroko Oshima	Japan	Canoe sprint	1964 Summer
Hiroyuki Oshima		Bobsleigh	1994 Winter
Kenkichi Oshima		Athletics	1932 Summer, 1936 Summer
Koichi Oshima		Baseball	1992 Summer
Kyoko Oshima		Artistic gymnastics	2004 Summer, 2008 Summer
Megumi Oshima		Athletics	2000 Summer, 2004 Summer
Ryota Oshima		Football	2016 Summer
Yasukuni Oshima		Basketball	1960 Summer
Misaki Oshiro		Weightlifting	2008 Summer
Rod Oshita	United States	Handball	1984 Summer, 1988 Summer
Yukiharu Oshita	Japan	Water polo	1972 Summer
Asisat Oshoala	Nigeria	Football	2024 Summer
Muwiya Oshode			1968 Summer
Emmanuel Oshomah		Weightlifting	1984 Summer
Olufunke Oshonaike		Table tennis	1996 Summer, 2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer
Eugenia Osho-Williams	Sierra Leone	Athletics	1980 Summer, 1984 Summer
Alan Oshyer	Australia	Weightlifting	1960 Summer
Andrzej Osiecimski-Czapski	Poland	Rowing	1924 Summer
Stefan Osiecki		Art competitions	1932 Summer
Ellen Osiier	Denmark	Fencing	1924 Summer
Ivan Joseph Martin Osiier			1908 Summer, 1912 Summer, 1920 Summer, 1924 Summer, 1928 Summer, 1932 Summer, 1948 Summer
Ivica Osim	Yugoslavia	Football	1964 Summer
Matías Osinalde	Argentina	Shooting	1924 Summer
Winand Osiński	Poland	Athletics	1952 Summer
Denis Osipau	Belarus	Freestyle skiing	2014 Winter
Denis Osipov	China	Ice hockey	2022 Winter
Leonid Osipov	Soviet Union	Water polo	1964 Summer, 1968 Summer, 1972 Summer
Sergey Osipov		Luge	1972 Winter
Elena Osipova	Russian Olympic Committee	Archery	2020 Summer
Irina Osipova	Russia	Basketball	2004 Summer, 2008 Summer, 2012 Summer
Svetlana Osipova	Uzbekistan	Taekwondo	2020 Summer, 2024 Summer
Tatyana Osipova	Kazakhstan	Cross country skiing	2010 Winter, 2014 Winter
Iuri Osip'ovi	Soviet Union	Fencing	1956 Summer
Albina Osipowich	United States	Swimming	1928 Summer
Guntis Osis	Soviet Union	Bobsleigh	1988 Winter
Shelayna Oskan-Clarke	Great Britain	Athletics	2016 Summer
Kristján Uni Óskarsson	Iceland	Alpine skiing	2006 Winter
Elisabeth Osl	Austria	Cycling mountain bike	2008 Summer, 2012 Summer
Paul Osland	Canada	Athletics	1988 Summer
Abdourahman Osman	Djibouti	Swimming	2012 Summer
Abrar Osman	Eritrea	Athletics	2012 Summer, 2016 Summer
Amro El-Sayed Osman	Egypt	Field hockey	1992 Summer
Farida Osman		Swimming	2012 Summer, 2016 Summer, 2020 Summer
Gamil Osman		Football	1920 Summer
Ibrahim Osman	Lebanon	Fencing	1960 Summer, 1964 Summer
Mohamed Ahmed Osman	Egypt	Wrestling	1948 Summer, 1952 Summer
Mohamed Hamdi Osman		Basketball	1976 Summer
Mohamed Hassan bin Osman	Malaysia	Athletics	1972 Summer
Zaki Osman	Egypt	Football	1920 Summer
Mustafa Osmanlı	Turkey	Road cycling	1948 Summer
Şeref Osmanoğlu	Ukraine, Turkey	Athletics	2012 Summer, 2016 Summer
Adil Osmanov	Moldova	Judo	2024 Summer
Sihamir Osmanov	North Macedonia	Wrestling	2004 Summer
Alek Osmanović	Croatia	Bobsleigh	2006 Winter
Miloslav Ošmera	Czechoslovakia	Ice hockey	1952 Winter
Nataša Osmokrović	Croatia	Volleyball	2000 Summer
Bekzat Osmonaliev	Kyrgyzstan	Weightlifting	2012 Summer
Kanybek Osmonaliyev	Soviet Union		1980 Summer
Kaetlyn Osmond	Canada	Figure skating	2014 Winter, 2018 Winter
Asbjørn Osnes	Norway	Ski jumping	1956 Winter
Gelegjamtsyn Ösökhbayar	Mongolia	Wrestling	2004 Summer
Vladimir Osokin	Soviet Union	Track cycling	1976 Summer, 1980 Summer
Liván Osoria	Cuba	Volleyball	2016 Summer
Aitor Osorio	Andorra	Swimming	1996 Summer
Camila Osorio	Colombia	Tennis	2020 Summer, 2024 Summer
Diego Osorio		Football	1992 Summer
Georgina Osorio	Panama	Swimming	1976 Summer
Julio Osorio		Basketball	1968 Summer
Erick Osornio	Mexico	Taekwondo	2012 Summer
Matic Osovnikar	Slovenia	Athletics	2000 Summer, 2004 Summer, 2008 Summer
Serhiy Osovych	Ukraine		1996 Summer
Filip Ospalý	Czech Republic	Triathlon	2000 Summer, 2004 Summer, 2008 Summer
Oskar Ospelt	Liechtenstein	Athletics	1936 Summer
Diana Ospina	Colombia	Football	2016 Summer
Pedro Ospina			1968 Summer
Elena Ospitaletche	Uruguay	Swimming	1976 Summer
Felicia Ospitaletche			1968 Summer, 1972 Summer
Honey Osrin	Great Britain		2024 Summer
Arnold Oss	United States	Ice hockey	1952 Winter
Juan Carlos de la Ossa	Spain	Athletics	2008 Summer
Matylda Ossadnik	Poland	Artistic gymnastics	1936 Summer
Christopher Ossai	Nigeria	Boxing	1980 Summer, 1984 Summer
Abdelrahman Ossama	Egypt	Taekwondo	2012 Summer
Adolphe Osselaer	Belgium	Wrestling	1936 Summer
Nicolas Osseland	France	Figure skating	1998 Winter
Friedhelm Osselmann	Germany	Water polo	1956 Summer, 1960 Summer
Rainer Osselmann	West Germany		1984 Summer, 1988 Summer
Esmeralda Ossendrijver	Netherlands	Short track speed skating	1994 Winter
Stanislav Ossinskiy	Kazakhstan	Swimming	2004 Summer, 2008 Summer
Helmer Osslund	Sweden	Art competitions	1932 Summer
John Ossowski	Canada	Rowing	1988 Summer
Alfred Ost	Belgium	Art competitions	1920 Summer
Isabell Ost	Germany	Speed skating	2010 Winter
Ahmad Al-Osta	Syria	Wrestling	1992 Summer, 1996 Summer
Walter Osta	Italy	Freestyle skiing	1992 Winter, 1994 Winter
Marian Ostafiński	Poland	Football	1972 Summer
Sergey Ostapchuk	Russia	Swimming	1996 Summer, 2000 Summer
Aleksey Ostapenko		Volleyball	2008 Summer
Jeļena Ostapenko	Latvia	Tennis	2016 Summer, 2020 Summer, 2024 Summer
Igor Ostashov	Soviet Union	Speed skating	1964 Winter
Cecilia Östberg	Sweden	Ice hockey	2010 Winter, 2014 Winter
Frida Östberg		Football	2004 Summer, 2008 Summer
Gunnar Östberg		Cross country skiing	1952 Winter
Mikael Östberg			2006 Winter
Søren Østberg	Denmark	Swimming	1984 Summer
Hilde Østbø	Norway	Handball	1996 Summer
Einar Østby		Cross country skiing	1960 Winter, 1964 Winter
Knut Østby		Canoe sprint	1948 Summer, 1952 Summer, 1956 Summer
Shyril O'Steen	United States	Rowing	1984 Summer
Kåre Østensen	Norway	Ice hockey	1964 Winter, 1968 Winter, 1972 Winter
Nils Östensson	Sweden	Cross country skiing	1948 Winter
Adalbert Oster	Romania	Shooting	1976 Summer
Stellan Österberg	Sweden	Badminton	1992 Summer
André Osterberger	France	Athletics	1952 Summer
Bror Österdahl	Sweden		1924 Summer
Maire Österdahl	Finland		1952 Summer
Jan Østergaard	Denmark	Cycling mountain bike	1996 Summer
Micha Østergaard		Swimming	2008 Summer
Trine Østergaard		Handball	2024 Summer
Wedell Østergaard		Road cycling	1952 Summer
Maria Östergren	Sweden	Cycling mountain bike	2004 Summer
Mary Ostergren	United States	Biathlon	1992 Winter, 1994 Winter
Nestor Östergren	Sweden	Rowing	1920 Summer
Claudia Österheld	West Germany	Canoe sprint	1988 Summer
Bernt Østerkløft	Norway	Nordic combined	1936 Winter
Tommy Österlund	Sweden	Rowing	1992 Summer
Anja Osterman	Slovenia	Canoe sprint	2020 Summer
Cat Osterman	United States	Softball	2004 Summer, 2008 Summer, 2020 Summer
Elisabeth Ostermeyer	Germany	Artistic gymnastics	1952 Summer
Micheline Ostermeyer	France	Athletics	1948 Summer
Henrik Østervold	Norway	Sailing	1920 Summer
Jan Østervold			1920 Summer
Kristian Østervold			1920 Summer
Ole Østervold			1920 Summer
Walter Osterwalder	Switzerland	Rowing	1960 Summer
Heinz Ostheimer	Saar	Artistic gymnastics	1952 Summer
Sten Osther	Norway	Handball	1972 Summer
Oscar Osthoff	United States	Weightlifting	1904 Summer
René Osthold	Germany	Shooting	1992 Summer
Frank Ostholt		Equestrian eventing	2004 Summer, 2008 Summer
Renzo Ostino	Italy	Rowing	1960 Summer
Marko Oštir	Slovenia	Handball	2004 Summer
Andreas Ostler	Germany	Bobsleigh	1952 Winter, 1956 Winter
Ingrid Ostler	Austria	Figure skating	1964 Winter
Anna Östling	Sweden	Sailing	2012 Summer
Gustav Östling		Athletics	1948 Summer, 1952 Summer
Maria Östling		Swimming	1996 Summer, 2004 Summer
Sebastian Östling		Sailing	2008 Summer, 2012 Summer
Stig Östling		Ice hockey	1972 Winter
Anita Östlund		Figure skating	2018 Winter
Benny Östlund		Shooting	1988 Summer, 1992 Summer
Marie-Helene Östlund		Cross country skiing	1988 Winter, 1992 Winter, 1994 Winter
Arvid Östman		Wrestling	1924 Summer
Bror Östman		Ski jumping	1952 Winter, 1956 Winter
Mats Östman			1968 Winter
Ole Østmo	Norway	Shooting	1900 Summer
Juan Ostoic	Chile	Basketball	1952 Summer, 1956 Summer
Stanisław Ostoja-Chrostowski	Poland	Art competitions	1936 Summer
Đuro Ostojić	Serbia and Montenegro	Basketball	2004 Summer
Milica Ostojić	Serbia	Swimming	2008 Summer
María Ostolaza	Peru	Volleyball	1976 Summer
Luis Ostos		Athletics	2016 Summer
Axel Östrand	Sweden	Ski jumping	1936 Winter
Erik Østrand	Denmark	Wrestling	1952 Summer
Per-Olof Östrand	Sweden	Swimming	1948 Summer, 1952 Summer, 1956 Summer
Marián Ostrčil	Slovakia	Canoe sprint	2004 Summer, 2008 Summer
Mário Ostrčil			2000 Summer
Kjeld Østrøm	Denmark	Rowing	1956 Summer
Krystyna Ostromęcka	Poland	Volleyball	1968 Summer
Sergey Ostroshapkin	Belarus	Boxing	1996 Summer
Adam Ostrowski	Poland	Wrestling	1968 Summer, 1972 Summer, 1976 Summer
Karol Ostrowski		Swimming	2020 Summer
Ryszard Ostrowski		Athletics	1988 Summer
Stéphane Ostrowski	France	Basketball	1984 Summer
Lauritz Christian Østrup	Denmark	Fencing	1908 Summer, 1912 Summer
Lars Andreas Østvik	Norway	Nordic combined	2002 Winter
Klaus Ostwald	East Germany	Ski jumping	1980 Winter, 1984 Winter
Ronny Ostwald	Germany	Athletics	2004 Summer
Dariusz Osuch	Poland	Weightlifting	1992 Summer, 1996 Summer
Sayuri Osuga	Japan	Speed skating, Track cycling	2002 Winter, 2004 Summer, 2006 Winter
Emmanuel Osuigwe	Nigeria	Football	1980 Summer
Chinedum Osuji	Trinidad and Tobago	Taekwondo	2004 Summer
Christian O'Sullivan	Norway	Handball	2020 Summer, 2024 Summer
Gillian O'Sullivan	Ireland	Athletics	2000 Summer
John O'Sullivan	Australia	Road cycling	1956 Summer
Marcus O'Sullivan	Ireland	Athletics	1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer
Maurice O'Sullivan	Great Britain	Boxing	1972 Summer
Rachel Kealaonapua O'Sullivan	United States	Diving	1968 Summer
Seán O'Sullivan	Ireland	Art competitions	1932 Summer
Shawn O'Sullivan	Canada	Boxing	1984 Summer
Sonia O'Sullivan	Ireland	Athletics	1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer
Sophie O'Sullivan			2024 Summer
Vince O'Sullivan	United States		1984 Summer
Isagi Osumi	Japan	Swimming	1964 Summer
César Osuna	Mexico	Volleyball	1968 Summer
Sarah Osvath	Australia	Fencing	1996 Summer
Alfons Oswald	Switzerland	Sailing	1948 Summer
Denis Oswald		Rowing	1968 Summer, 1972 Summer, 1976 Summer
Mihael Oswald	Yugoslavia	Artistic gymnastics	1924 Summer
Pascal Oswald	Switzerland	Skeleton	2010 Winter
Philipp Oswald	Austria	Tennis	2020 Summer
Roy Oswalt	United States	Baseball	2000 Summer
Simone Osygus	Germany	Swimming	1992 Summer, 1996 Summer
Inna Osypenko-Radomska	Ukraine, Azerbaijan	Canoe sprint	2000 Summer, 2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer
Morgane Osyssek	France	Artistic gymnastics	2024 Summer
István Osztrics	Hungary	Fencing	1972 Summer, 1976 Summer, 1980 Summer
Akira Ōta	Japan	Wrestling	1984 Summer, 1988 Summer, 1992 Summer
Kaiya Ota		Track cycling	2024 Summer
Kazuomi Ota		Weightlifting	2012 Summer
Miwa Ota		Cross country skiing	1992 Winter
Nobuko Ota		Rowing	1992 Summer
Shinichi Ota		Track cycling	2000 Summer
Shinobu Ota		Wrestling	2016 Summer
Shumin Ota		Art competitions	1936 Summer
Takuya Ōta		Wrestling	1996 Summer
Tomio Ota		Athletics	1960 Summer, 1964 Summer
Yuki Ota		Fencing	2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer
Rhema Otabor	Bahamas	Athletics	2024 Summer
Karel Otáhal	Czechoslovakia	Art competitions	1948 Summer
Martin Otáhal	Czech Republic	Canoe sprint	1996 Summer
Stanislav Otáhal	Czechoslovakia	Athletics	1936 Summer
Zdeněk Otáhal		Weightlifting	1960 Summer, 1964 Summer
Mukhlid Al-Otaibi	Saudi Arabia	Athletics	2008 Summer, 2012 Summer, 2016 Summer
Sultan Al-Otaibi	Kuwait	Swimming	1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer
Talak Al-Otaibi	Saudi Arabia	Shooting	1984 Summer
Tomomi Otaka	Japan	Cross country skiing, Biathlon	1998 Winter, 2002 Winter, 2006 Winter
Yukiko Otaka		Swimming	1956 Summer
Yuko Otaka		Luge	1972 Winter
Hideyuki Otake		Volleyball	1992 Summer
Nami Otake		Football	1996 Summer
Chika Otaki		Ice hockey	2022 Winter
Christopher Otambo	Kenya	Field hockey	1984 Summer, 1988 Summer
Nicolás Otamendi	Argentina	Football	2024 Summer
Mio Otani	Japan		2004 Summer
Sachiko Otani		Volleyball	1984 Summer
Dzhamal Otarsultanov	Russia	Wrestling	2012 Summer
Bogdan Laurentiu Otavă	Romania	Bobsleigh	2014 Winter
Francisco Otayza	Peru	Shooting	1956 Summer
Martin Otčenáš	Slovakia	Cross country skiing, Biathlon	2006 Winter, 2014 Winter, 2018 Winter
Natalya Otchenash	Ukraine	Biathlon	2014 Winter
Marie Oteiza	France	Modern pentathlon	2020 Summer, 2024 Summer
Oteng Oteng	Botswana	Boxing	2012 Summer
Andrija Otenhajmer	Yugoslavia	Athletics	1952 Summer
Carlos Otero	Argentina	Rowing	1968 Summer
Carolina García Otero	Spain	Canoe sprint	2024 Summer
Eduardo Germán Otero	Argentina	Swimming	2000 Summer, 2004 Summer, 2008 Summer
Luis Otero	Spain	Football	1920 Summer
Matías Otero	Uruguay	Canoe sprint	2024 Summer
Pedro Otero	Cuba	Basketball	1948 Summer
Jargalyn Otgon	Mongolia	Archery	1992 Summer, 1996 Summer
Munkhtsetseg Otgon		Judo	2020 Summer
Lkhagvasürengiin Otgonbaatar			2016 Summer, 2020 Summer
Luvsanlkhündegiin Otgonbayar		Athletics	2004 Summer, 2012 Summer, 2016 Summer
Ravsalyn Otgonbayar		Boxing	1976 Summer, 1980 Summer
Baatarkhuyagiin Otgonbold		Archery	2020 Summer, 2024 Summer
Dorjnyambuugiin Otgondalai		Boxing	2016 Summer
Dolgorjavyn Otgonjargal		Wrestling	2024 Summer
Naidangiin Otgonjargal			2008 Summer
Chinbatyn Otgontsetseg		Cross country skiing	2014 Winter, 2018 Winter
Davaasükhiin Otgontsetseg		Wrestling	2012 Summer
Otgontsetseg Galbadrakh	Kazakhstan	Judo	2016 Summer, 2020 Summer
Othman Abdullah	Malaysia	Football	1972 Summer
Ahmed Othman	Egypt	Wrestling	2016 Summer
Bacent Othman		Table tennis	2000 Summer
Jamal Othman	Switzerland	Figure skating	2006 Winter
Khaled Othman	Libya	Athletics	1996 Summer
Naceur Ben Othman	Tunisia	Volleyball	1972 Summer
Naser Al-Othman	Kuwait	Football	2000 Summer
Alvin Otieno	Kenya	Rugby sevens	2020 Summer
Eric Otieno		Field hockey	1984 Summer
Irene Otieno		Rugby sevens	2016 Summer
Joseph Otieno		Athletics	1984 Summer
Stacy Otieno		Rugby sevens	2016 Summer
Joel Otim	Uganda	Athletics	1992 Summer
Charles Otis	Canada	Fencing	1936 Summer
Mawupemon Otogbe	Togo	Swimming	2020 Summer
Keisuke Otoguro	Japan	Wrestling	2020 Summer
Takuto Otoguro			2020 Summer
Kouadio Otokpa	Ivory Coast	Athletics	1984 Summer
Ai Ōtomo	Japan	Volleyball	2004 Summer, 2012 Summer
Tsutsumi Otomo		Ice hockey	1998 Winter
Danielle O'Toole-Trejo	Mexico	Softball	2020 Summer
Dermot O'Toole	Ireland	Art competitions	1948 Summer
Eddie O'Toole	United States	Athletics	1948 Summer
Gary O'Toole	Ireland	Swimming	1988 Summer, 1992 Summer
Maureen O'Toole	United States	Water polo	2000 Summer
Niall O'Toole	Ireland	Rowing	1992 Summer, 1996 Summer, 2004 Summer
Kumi Otoshi	Japan	Athletics	2012 Summer
Svetla Otsetova	Bulgaria	Rowing	1976 Summer, 1980 Summer
Hiromi Ōtsu	Japan	Speed skating	2006 Winter
Shinji Otsu		Sailing	1992 Summer
Yūki Ōtsu		Football	2012 Summer
Masashi Otsubo		Athletics	1964 Summer
Toshimitsu Otsubo		Ice hockey	1968 Winter, 1972 Winter, 1976 Winter
Toshio Otsubo		Diving	1964 Summer, 1968 Summer
Masahiko Otsue		Alpine skiing	1972 Winter
Mihoko Otsue			1968 Winter
Hirofumi Otsuka		Speed skating	1968 Winter
Hiroko Otsuka		Rhythmic gymnastics	1988 Summer
Miyako Ōtsuka		Basketball	1976 Summer
Miyu Otsuka		Swimming	2012 Summer
Shiho Otsuka		Field hockey	2012 Summer
Tadashi Ōtsuka		Badminton	2004 Summer, 2008 Summer
Takeru Otsuka		Snowboarding	2022 Winter
Tatsunori Otsuka		Volleyball	2020 Summer, 2024 Summer
Anastasiya Ott	Russia	Athletics	2008 Summer
Hans Ott	Switzerland	Ice hockey	1956 Winter
Kurt Ott		Road cycling	1936 Summer
Ludwig Ott	West Germany	Water polo	1968 Summer
Martin Ott	Switzerland	Handball	1984 Summer
Mirjam Ott		Curling	2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter
Niko Ott	West Germany	Rowing	1968 Summer
Patricia Ott		Field hockey	1984 Summer
Paolo Ottavi	Italy	Artistic gymnastics	2012 Summer
Alfonso Ottaviani		Modern pentathlon	1964 Summer
Fabrizia D'Ottavio		Rhythmic gymnastics	2004 Summer, 2008 Summer
Katharina Otte	Germany	Field hockey	2012 Summer, 2016 Summer
Tarren Otte	Australia	Artistic swimming	2008 Summer, 2012 Summer
Joris Otten	Netherlands	Canoe slalom	2024 Summer
Louis Otten		Football	1908 Summer
Anne Ottenbrite	Canada	Swimming	1984 Summer
Joseph Otterbeen	Belgium	Athletics	1920 Summer
Payton Otterdahl	United States		2020 Summer, 2024 Summer
Suzanne Otterson	Great Britain	Figure skating	1992 Winter
Hein Otterspeer	Netherlands	Speed skating	2022 Winter
Henrik Ottesen	Denmark	Boxing	1956 Summer
Jeanette Ottesen		Swimming	2004 Summer, 2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer
Lasse Ottesen	Norway	Ski jumping	1992 Winter, 1994 Winter, 1998 Winter
Merlene Ottey	Jamaica, Slovenia	Athletics	1980 Summer, 1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer, 2000 Summer, 2004 Summer
Milton Ottey	Canada		1984 Summer, 1988 Summer
Tom Ottey	United States		1932 Summer
Alex Ottiano		Judo	2000 Summer, 2004 Summer
Sven Ottke	West Germany, Germany	Boxing	1988 Summer, 1992 Summer, 1996 Summer
David Ottley	Great Britain	Athletics	1980 Summer, 1984 Summer, 1988 Summer
Andreas Otto	East Germany, Germany	Boxing	1988 Summer, 1992 Summer
Anita Otto	East Germany	Athletics	1968 Summer
Björn Otto	Germany		2012 Summer
Evelyn Otto	Palau	Swimming	2004 Summer
Frank Otto	West Germany, Germany	Water polo	1984 Summer, 1988 Summer, 1992 Summer
Fred Otto	Germany	Art competitions	1936 Summer
Gisela Otto	West Germany	Luge	1972 Winter
Joel Otto	United States	Ice hockey	1998 Winter
John Otto		Road cycling	1920 Summer
Kristin Otto	East Germany	Swimming	1988 Summer
Louise Otto	Germany		1912 Summer
Poul Otto	Denmark	Athletics	1936 Summer
Rudolf Otto	Germany	Art competitions	1936 Summer
Sylke Otto		Luge	1992 Winter, 2002 Winter, 2006 Winter
Werner Otto	East Germany	Track cycling	1968 Summer, 1972 Summer
Marcel Otto-Bruc	France	Shooting	1960 Summer
Margit Otto-Crépin		Equestrian dressage	1984 Summer, 1988 Summer, 1992 Summer, 1996 Summer
Sergio Ottolina	Italy	Athletics	1964 Summer, 1968 Summer
Luca Ottolino		Bobsleigh	2006 Winter
Emanuele Ottonello		Sailing	1968 Summer
Anna Ottosson	Sweden	Alpine skiing	1998 Winter, 2002 Winter, 2006 Winter
Jan Ottosson		Cross country skiing	1984 Winter, 1988 Winter, 1992 Winter, 1994 Winter
Peter Ottosson		Ice hockey	1992 Winter
Eddy Ottoz	Italy	Athletics	1964 Summer, 1968 Summer
Laurent Ottoz			1992 Summer, 1996 Summer
Idara Otu	Nigeria		2012 Summer
Beauty Otuedo		Canoe sprint	2024 Summer
Stefan Otulakowski	Poland	Field hockey	1972 Summer
Christina Otzen	Denmark	Sailing	2004 Summer
Volmer Otzen		Diving	1924 Summer
Ou Ching-chieh	Chinese Taipei	Softball	1996 Summer
Ou Jingbai	China		1996 Summer
Ou Shaoyan		Rowing	1996 Summer, 2000 Summer
Ou Xiaotao		Freestyle skiing	1998 Winter, 2002 Winter, 2006 Winter
Ou Xuanyi		Badminton	2024 Summer
Ou Yushan		Artistic gymnastics	2020 Summer, 2024 Summer
Ou Zixia		Field hockey	2016 Summer, 2020 Summer, 2024 Summer
Mohamed Ouaadi	France	Athletics	2000 Summer
Denise Ouabangui	Central African Republic		1996 Summer
Ali Ouabbou	Morocco	Boxing	1972 Summer
Hachemi Ouahchi	Tunisia	Football	1988 Summer
Ahmad Ouachit	Morocco	Alpine skiing	1984 Winter, 1988 Winter
Hamid Oujebbad			1984 Winter
Mohamed Amine Ouadahi	Algeria	Boxing	2012 Summer
Lahcen Ouadani	Morocco	Football	1984 Summer
Abdelkebir Ouaddar		Equestrian jumping	2016 Summer, 2020 Summer
Chokri El Ouaer	Tunisia	Football	1996 Summer
Joseph-Dieudonné Ouagon	Central African Republic	Basketball	1988 Summer
Lamine Ouahab	Algeria	Tennis	2004 Summer
Manon Ouaiss	Lebanon	Alpine skiing	2022 Winter
Abdelkrim Ouakali	Algeria	Wrestling	2024 Summer
Salima El Ouali Alami	Morocco	Athletics	2012 Summer, 2016 Summer
Fatiha Ouali	France		2000 Summer
Bibiano Ouano	Philippines	Basketball	1936 Summer
Muncef Ouardi	Canada	Speed skating	2014 Winter
Zouhair El-Ouardi	Morocco	Athletics	2004 Summer
Samira Ouass		Weightlifting	2016 Summer
Newfel Ouatah	Algeria	Boxing	2008 Summer
Mahdi Ouatine	Morocco		2008 Summer
Zié Ouattara	Ivory Coast	Football	2020 Summer
Seloua Ouaziz	Morocco	Athletics	2000 Summer
Zahra Ouaziz			1996 Summer
Nordine Oubaali	France	Boxing	2008 Summer, 2012 Summer
Mohamed Oubahim	Morocco	Cross country skiing	1992 Winter
Yamna Oubouhou	France	Athletics	2000 Summer
Mahjouba Oubtil	Morocco	Boxing	2012 Summer
Ludovic Oucéni	France	Athletics	2020 Summer
Hassan Oucheikh	Morocco	Boxing	2000 Summer
Ai Ouchi	Japan	Archery	1996 Summer
Masushi Ouchi		Weightlifting	1964 Summer, 1968 Summer
Kamel Ouchia	Algeria	Handball	1984 Summer, 1988 Summer
El Houssaine Ouchla	Morocco	Football	2000 Summer
Sam Oud	Netherlands	Canoe slalom	2004 Summer
Willy den Ouden		Swimming	1932 Summer, 1936 Summer
Jaap Oudkerk		Track cycling	1960 Summer, 1964 Summer
Chaleunsouk Oudomphanh	Laos	Athletics	2004 Summer
Aad Oudt	Netherlands	Swimming	1964 Summer, 1968 Summer
Bilel Ouechtati	Tunisia	Wrestling	2012 Summer
Adama Ouedraogo	Burkina Faso	Swimming	2012 Summer, 2020 Summer
Angelika Ouedraogo			2012 Summer, 2016 Summer, 2020 Summer
Élodie Ouédraogo	Belgium	Athletics	2004 Summer, 2008 Summer, 2012 Summer
Julien Ouedraogo	Burkina Faso	Fencing	2008 Summer
Mamadou Ouedraogo		Swimming	2004 Summer
Robert Ouellet	France	Ice hockey	1998 Winter
Ronald Ouellet	Canada	Wrestling	1972 Summer
Caroline Ouellette		Ice hockey	2002 Winter, 2006 Winter, 2010 Winter, 2014 Winter
Gerald Ouellette		Shooting	1956 Summer, 1968 Summer
Hanatou Ouelogo	Burkina Faso	Judo	2004 Summer, 2008 Summer
Rachida Ouerdane	Algeria		2004 Summer, 2008 Summer
Oussama Oueslati	Tunisia	Taekwondo	2016 Summer
Wayne Ough	Australia	Baseball	2004 Summer
Carolyne Oughton	Canada	Alpine skiing	1972 Winter
Fabrice Ougier	France	Freestyle skiing	1998 Winter
Mélanie Ougier		Luge	2002 Winter
Hanane Ouhaddou	Morocco	Athletics	2008 Summer
Aziz Ouhadi			2012 Summer, 2016 Summer
Azzedine Ouhib	Algeria	Handball	1984 Summer
Balkissa Ouhoumoudou	Niger	Swimming	2000 Summer
Mariama Ouiminga	Burkina Faso	Athletics	1988 Summer
Salifou Koucka Ouiminga		Judo	2000 Summer
Ibrahim Mohamed Al-Ouiran	Saudi Arabia	Athletics	1988 Summer
Mimoun Ouitot	Morocco	Alpine skiing	1968 Winter
Ouk Chanthan	Cambodia	Athletics	1996 Summer, 2000 Summer
Larbi Oukada	Morocco		1968 Summer
Fatima-Zohra Oukazi	Algeria	Volleyball	2008 Summer
Abdessamad Oukhelfen	Spain	Athletics	2024 Summer
Robert Ouko	Kenya		1968 Summer, 1972 Summer
Charles Oula	Monaco	Bobsleigh	2002 Winter
Gaston Oula	Ivory Coast	Judo	1984 Summer
Abdulnasser El-Oulabi	Syria	Wrestling	1980 Summer
Mohamed El-Oulabi			1980 Summer
Farid Oulami	Algeria	Table tennis	2000 Summer
Naby Oularé	Guinea	Football	2024 Summer
Mohamed Ould Khalifa	Mauritania	Athletics	1988 Summer, 1992 Summer
Noureddine Ould Ménira			1992 Summer, 1996 Summer
Johnny Ould	Great Britain	Boxing	1960 Summer
Lenka Oulehlová	Czechoslovakia, Czech Republic	Rhythmic gymnastics	1988 Summer, 1992 Summer, 1996 Summer
Abdelmajid Oulmers	Morocco	Football	2000 Summer
Lydia Oulmou	Algeria	Volleyball	2008 Summer, 2012 Summer
Matthias Ouma	Uganda	Boxing	1968 Summer, 1972 Summer
Sanda Bouba Oumarou	Central African Republic	Basketball	1988 Summer
Méryem Oumezdi	Morocco	Athletics	1988 Summer
Sofiane Oumiha	France	Boxing	2016 Summer, 2020 Summer, 2024 Summer
Oun Yao-ling	Chinese Taipei	Weightlifting	1964 Summer
Haig Oundjian	Great Britain	Figure skating	1968 Winter, 1972 Winter
Alex Oundo	Kenya	Boxing	1964 Summer
Terrence Oung	Myanmar		1956 Summer
Sikhounxay Ounkhamphanyavong	Laos	Swimming	2000 Summer
Chantal Ouoba	Burkina Faso	Athletics	1996 Summer
Souneat Ouphaphone	Laos	Boxing	1980 Summer
Asami Oura	Japan	Water polo	1984 Summer
Masafumi Ōura		Volleyball	1992 Summer
Foued Ourabi	Tunisia	Sailing	2004 Summer
Abdelhalim Ouradi	Algeria	Boxing	2008 Summer
Sarah Ourahmoune	France		2016 Summer
Azzeddine Ourahou	Morocco	Football	2004 Summer
Vlastimil Ouředník	Czechoslovakia	Canoe slalom	1972 Summer
Hanene Ourfelli	Tunisia	Weightlifting	2008 Summer
Dan Ouseley	Great Britain	Rowing	2004 Summer
Rajiv Ouseph		Badminton	2012 Summer, 2016 Summer
Kai Outa	Finland	Weightlifting	1952 Summer
Mouhcine Outalha	Morocco	Athletics	2024 Summer
Willets Outerbridge	United States	Sailing	1928 Summer
Luiz Outerelo	Brazil	Diving	2016 Summer
Serguei Outschakov	Ukraine	Road cycling	1996 Summer, 2000 Summer
Nathan Outteridge	Australia	Sailing	2008 Summer, 2012 Summer, 2016 Summer
Eliza Outtrim	United States	Freestyle skiing	2014 Winter
Cristina Ouviña	Spain	Basketball	2020 Summer
Olavi Ouvinen	Finland	Boxing	1948 Summer
Hazel Ouwehand	New Zealand	Swimming	2024 Summer
Ouyang Kunpeng	China		2000 Summer, 2004 Summer
Sara Ouzande	Spain	Canoe sprint	2024 Summer
Tigran Ouzlian	Greece	Boxing	1996 Summer, 2000 Summer
Kalliopi Ouzouni		Athletics	2000 Summer, 2004 Summer
Éva Óvári	Hungary	Artistic gymnastics	1976 Summer, 1980 Summer
Eszter Óváry			1988 Summer, 1996 Summer
László Óváry		Wrestling	1992 Summer
Toivo Ovaska	Finland	Speed skating	1928 Winter
Juha Ovaskainen		Diving	1984 Summer, 1988 Summer
Vladislava Ovcharenko	Tajikistan	Athletics	2012 Summer
Lyubov Ovcharova	Russian Olympic Committee	Wrestling	2020 Summer
Vladimir Ovchinnikov	Soviet Union, Russia	Athletics	1988 Summer, 1996 Summer, 2000 Summer
Yuri Ovchinnikov	Soviet Union	Figure skating	1972 Winter, 1976 Winter
Evgeniya Ovchinnikova	Russia	Equestrian eventing	2016 Summer
Kristina Ovchinnikova	Kazakhstan	Athletics	2020 Summer
Mariya Ovchinnikova			2020 Summer
Oksana Ovchinnikova	Russia		1996 Summer
Yelena Ovchinnikova		Artistic swimming	2008 Summer
Konstantīns Ovčiņņikovs	Latvia	Judo	2012 Summer
Alexander Ovechkin	Russia	Ice hockey	2006 Winter, 2010 Winter, 2014 Winter
Nadezhda Ovechkina	Soviet Union	Field hockey	1980 Summer
Tatyana Ovechkina		Basketball	1976 Summer, 1980 Summer
Dmitry Ovechko	Russia	Rowing	2000 Summer
Mette Ove-Petersen	Denmark	Swimming	1952 Summer
Het Lichtet Overal	Belgium	Art competitions	1928 Summer
Scott Overall	Great Britain	Athletics	2012 Summer
Carla Overbeck	United States	Football	1996 Summer
Håkon Øverby	Norway	Wrestling	1968 Summer, 1972 Summer
Petter Øverby		Handball	2020 Summer, 2024 Summer
Sigurd Overby	United States	Cross country skiing, Nordic combined	1924 Winter
Marie Overbye	Denmark	Triathlon	2000 Summer
Mirjam Overdam	Netherlands	Water polo	2000 Summer
Gerard Overdijkink		Field hockey	1960 Summer
Tom Overend	Canada	Speed skating	1976 Winter
Katia Overfeldt	Belgium	Artistic swimming	1984 Summer
Knud Børge Overgaard	Denmark	Football	1948 Summer
Elling Øvergård	Norway	Shooting	1968 Summer
Emily Overholt	Canada	Swimming	2016 Summer
Amanda Overland		Short track speed skating	2006 Winter
Cindy Overland		Speed skating	1998 Winter, 2002 Winter
Jon Terje Øverland	Norway	Alpine skiing	1964 Winter, 1968 Winter
Kevin Overland	Canada	Speed skating	1998 Winter
Jarmo Övermark	Finland	Wrestling	1976 Summer, 1980 Summer, 1984 Summer
Kari Övermark			1976 Summer
Puck Oversloot	Netherlands	Swimming	1932 Summer
David Overton	Canada	Rowing	1964 Summer
Elli Overton	Australia	Swimming	1992 Summer, 1996 Summer, 2000 Summer
Whitey Overton	United States	Athletics	1948 Summer
Friedel Overwien	Germany	Artistic gymnastics	1952 Summer
Nick Ovett	Great Britain	Luge	1988 Winter, 1992 Winter
Steve Ovett		Athletics	1976 Summer, 1980 Summer, 1984 Summer
Heiner Oviedo	Costa Rica	Taekwondo	2012 Summer
Luis Oviedo	Cuba	Volleyball	1980 Summer
Roberto Oviedo	Argentina	Boxing	1984 Summer
Raymond Ovinou	Papua New Guinea	Judo	2012 Summer, 2016 Summer
Régis Ovion	France	Road cycling	1972 Summer
Badie Ovnteni	Niger	Boxing	1988 Summer
Didier Ovono	Gabon	Football	2012 Summer
Tore Øvrebø	Norway	Rowing	1988 Summer
Aleksandr Ovsyankin	Soviet Union	Fencing	1956 Summer
Oleg Ovsyannikov	Russia	Figure skating	1998 Winter
Dimitrij Ovtcharov	Germany	Table tennis	2008 Summer, 2012 Summer, 2016 Summer, 2020 Summer, 2024 Summer
Olya Ovtchinnikova	Canada	Fencing	2008 Summer
Ow Soon Kooi	Malaysia	Field hockey	1976 Summer, 1984 Summer
Tomoko Owada	Japan	Fencing	1964 Summer
Khamis Al-Owairan	Saudi Arabia	Football	1996 Summer
Bogusław Owczarek	Poland	Equestrian eventing	1996 Summer
Eddie Owen	Great Britain	Athletics	1908 Summer, 1912 Summer
Edwyn Owen	United States	Ice hockey	1960 Winter
Ellen Owen		Diving	1992 Summer
George Owen	Great Britain	Track cycling	1924 Summer
Ieuan Owen		Weightlifting	1972 Summer
Jon Owen	United States	Luge	1988 Winter
Laurence Owen		Figure skating	1960 Winter
Maribel Owen			1960 Winter
Nancy Owen		Volleyball	1964 Summer, 1968 Summer
Rada Owen		Swimming	2000 Summer
Rod Owen-Jones	Australia	Water polo	2000 Summer
Ger Owens	Ireland	Sailing	2004 Summer, 2008 Summer, 2012 Summer
James Owens	United States	Athletics	1976 Summer
Jenny Owens	Australia	Alpine skiing, Freestyle skiing	2002 Winter, 2010 Winter, 2014 Winter
Jesse Owens	United States	Athletics	1936 Summer
Kai Owens		Freestyle skiing	2022 Winter
Ryan Owens	Great Britain	Track cycling	2020 Summer
Tarja Owens	Ireland	Cycling mountain bike	2000 Summer
Thomas Owens	Australia	Sailing	1964 Summer
Ayden Owens-Delerme	Puerto Rico	Athletics	2024 Summer
Alison Owen-Spencer	United States	Cross country skiing	1972 Winter, 1980 Winter
Öwez Öwezow	Turkmenistan	Weightlifting	2020 Summer
Pamella Owino	Kenya	Volleyball	2024 Summer
Victor Owino		Field hockey	1988 Summer
Dodovic Owiny	Uganda	Boxing	1984 Summer
Esraa Owis	Egypt	Athletics	2024 Summer
Charles Owiso	Kenya	Boxing	1984 Summer
John Owiti		Athletics	1964 Summer
Own Kongding	China	Weightlifting	1936 Summer
Atisi Owoh	Nigeria	Table tennis	2000 Summer
Felix Owolabi		Football	1980 Summer
Kubrat Owolabi		Table tennis	1988 Summer
Nicolas Owona	Cameroon	Road cycling	1972 Summer, 1976 Summer, 1980 Summer
James Owoo	Ghana	Athletics	1952 Summer
Paskar Owor	Uganda		2000 Summer, 2004 Summer
Lily Owsley	Great Britain	Field hockey	2016 Summer, 2020 Summer, 2024 Summer
George Owu	Ghana	Football	2004 Summer
Aaron Ghebre Owusu	Eritrea	Swimming	2024 Summer
Andrew Owusu	Ghana	Athletics	1996 Summer, 2000 Summer, 2004 Summer
Edward Owusu			1968 Summer
Frederick Owusu			1960 Summer
John Owusu			1952 Summer
Joshua Owusu			1972 Summer
Kwasi Owusu		Football	1972 Summer
Flings Owusu-Agyapong		Athletics	2016 Summer
Noel Oxenbury	Canada	Swimming	1936 Summer
Johan Gabriel Oxenstierna	Sweden	Modern pentathlon	1932 Summer
Tom Erik Oxholm	Norway	Speed skating	1980 Winter
John Oxley	United States	Athletics	1904 Summer
Johnny Oxley	Great Britain	Ice hockey	1948 Winter
Tanya Oxley	Barbados	Athletics	2000 Summer
Juan Carlos Oxoby	Argentina	Shooting	1964 Summer
Chris Oxspring	Australia	Baseball	2004 Summer
Mette Oxvang	Denmark	Athletics	1960 Summer
Masaki Oya	Japan		1996 Summer
Chihiro Oyagi		Artistic gymnastics	1984 Summer
Masaaki Oyagi		Luge	1976 Winter
Yoshi Oyakawa	United States	Swimming	1952 Summer, 1956 Summer
Kana Oyama	Japan	Volleyball	2004 Summer
Mikio Oyama		Speed skating	1976 Winter
Shiho Oyama		Golf	2016 Summer
Taeko Oyama		Basketball	1996 Summer, 2004 Summer
Jesús Oyarbide	Spain	Athletics	1928 Summer
José Ramón Oyarzábal		Rowing	1980 Summer, 1984 Summer, 1988 Summer
Mikel Oyarzabal		Football	2020 Summer
Timon Oyebami	Nigeria	Athletics	1968 Summer, 1972 Summer
Olumide Oyedeji		Basketball	2012 Summer
Samson Oyeledun		Athletics	1980 Summer, 1984 Summer
Anais Oyembo	Gabon		2000 Summer
Cornelius van Oyen	Germany	Shooting	1936 Summer
Abi Oyepitan	Great Britain	Athletics	2004 Summer, 2012 Summer
Moses Oyiki	Nigeria		1996 Summer
Ivan, Viscount d'Oyley	United States	Fencing	1900 Summer
Tamara Oynick	Mexico	Swimming	1968 Summer
Tsutomu Ōyokota	Japan		1932 Summer
Nelson Oyoo	Kenya	Rugby sevens	2020 Summer
Camilyne Oyuayo			2016 Summer
Dugarsürengiin Oyuunbold	Mongolia	Wrestling	1980 Summer
Gantömöriin Oyuungerel		Swimming	2012 Summer
Sambuugiin Oyuuntsetseg		Archery	1988 Summer
Davaasürengiin Oyuuntuyaa		Artistic gymnastics	1980 Summer
George Oywello	Uganda	Boxing	1960 Summer, 1964 Summer
Yaron Oz	Israel	Football	1976 Summer
Kai Ozaki	Japan	Freestyle skiing	2006 Winter, 2010 Winter
Kōsuke Ozaki		Biathlon	2022 Winter
Michiharu Ozaki		Shooting	1976 Summer
Nonoka Ozaki		Wrestling	2024 Summer
Seri Ozaki		Fencing	2024 Summer
Yoshimi Ozaki		Athletics	2012 Summer
Mehmet Özal	Turkey	Wrestling	2004 Summer, 2008 Summer
Hiromi Ozawa	Japan	Speed skating	1984 Winter
Junko Ozawa		Football	1996 Summer
Michihiro Ozawa			1956 Summer
Mika Ozawa		Short track speed skating	2006 Winter, 2010 Winter
Misaki Ozawa		Field hockey	2008 Summer
Sachi Ozawa		Short track speed skating	1998 Winter
Tsugeo Ozawa		Fencing	1960 Summer
Fatih Özbaş	Turkey	Wrestling	1992 Summer
Szofi Özbas	Hungary	Judo	2020 Summer, 2024 Summer
Cansu Özbay	Turkey	Volleyball	2020 Summer, 2024 Summer
Elis Özbay		Rowing	2024 Summer
Muhammed Furkan Özbek		Weightlifting	2020 Summer, 2024 Summer
Rızvan Özbey		Cross country skiing	1968 Winter
Sacit Özbey			1976 Winter
Yavuz Özbey			1976 Winter
İlham Tanui Özbilen		Athletics	2012 Summer, 2016 Summer
Janez Ožbolt	Slovenia	Biathlon	1992 Winter, 1994 Winter, 1998 Winter, 2002 Winter, 2006 Winter
Kaya Özcan	Turkey	Wrestling	1968 Summer
Mustafa Özcan		Athletics	1948 Summer
Kemal Özçelik		Equestrian eventing	1956 Summer
Serap Özçelik		Karate	2020 Summer
Kamil Özdağ		Wrestling	1976 Summer
Ali Özdemir			1948 Summer, 1952 Summer
Bayram Özdemir			1996 Summer
Ela Naz Özdemir		Swimming	2024 Summer
Kuddusi Özdemir		Wrestling	1976 Summer
Agata Ozdoba-Błach	Poland	Judo	2020 Summer
Sanja Ožegović	Yugoslavia	Basketball	1980 Summer, 1984 Summer
Tokiko Ozeki	Japan	Cross country skiing	1972 Winter
Ali Özen	Turkey	Wrestling	2000 Summer
Türker Özenbaş		Shooting	1968 Summer
Gizem Özer		Boxing	2024 Summer
Kayhan Özer		Athletics	2020 Summer, 2024 Summer
Igor Ozerov	Russia	Short track speed skating	1994 Winter
Yuri Ozerov	Soviet Union	Basketball	1952 Summer, 1956 Summer
Cēzars Ozers			1960 Summer
Kaspars Ozers	Latvia	Road cycling	1996 Summer
Hasan Kaan Özgönenç	Turkey	Sailing	2004 Summer
Fahir Özgüden		Athletics	1960 Summer
Alaattin Özgür		Wrestling	1984 Summer
Nikolay Ozhegin	Russia	Judo	1996 Summer
Alisa Ozhogina	Spain	Artistic swimming	2020 Summer, 2024 Summer
Norbert Ozimek	Poland	Weightlifting	1968 Summer, 1972 Summer
Paul Oziol de Pignol	France	Fencing	1928 Summer
Ibo Oziti	Nigeria	Wrestling	1992 Summer, 1996 Summer, 2000 Summer
Joe Oziti			1992 Summer
Ertan Özkan	Turkey	Athletics	2020 Summer
Ertuğrul Özkan		Sailing	1984 Summer
Hüseyin Özkan		Judo	2000 Summer
Kerem Özkan		Sailing	1996 Summer
Sibel Özkan		Weightlifting	2008 Summer
Naci Özkaya		Football	1948 Summer
Peri Suzan Özkum		Diving	1976 Summer
Ekke Ozlberger	Austria	Art competitions	1936 Summer, 1948 Summer
Bekir Özlü	Georgia, Turkey	Judo	2012 Summer, 2016 Summer
Józef Oźmin	Poland	Art competitions	1936 Summer
Stanisław Ożóg		Athletics	1960 Summer
Edvin Ozolin	Soviet Union		1960 Summer, 1964 Summer
Agnese Ozoliņa	Latvia	Swimming	1996 Summer, 2000 Summer, 2004 Summer
Elvīra Ozoliņa	Soviet Union	Athletics	1960 Summer, 1964 Summer
Sanita Ozoliņa	Latvia	Rowing	1996 Summer
Sinta Ozoliņa-Kovala		Athletics	2008 Summer, 2012 Summer, 2016 Summer
Rein Ozoline	Australia	Wrestling	1996 Summer, 2000 Summer
Alberts Ozoliņš	Latvia	Weightlifting	1924 Summer
Anna Ozolins	Australia	Rowing	1996 Summer
Sandis Ozoliņš	Latvia	Ice hockey	2002 Winter, 2006 Winter, 2014 Winter
Dainis Ozols		Road cycling	1992 Summer, 1996 Summer, 2000 Summer
Jānis Ozols		Bobsleigh	1998 Winter, 2002 Winter, 2006 Winter
Patriks Ozols		Ice hockey	2022 Winter
Roberts Ozols		Track cycling	1928 Summer
Arvīds Ozols-Bernē	Russia	Athletics	1912 Summer
Abuaihuda Ozon	Syria	Weightlifting	1984 Summer
Titus Ozon	Romania	Football	1952 Summer
Petar Ozretić	Yugoslavia	Rowing	1948 Summer
Neriman Özsoy	Turkey	Volleyball	2012 Summer
András Ozsvár	Hungary	Judo	1980 Summer
Lale Öztürk	Turkey	Athletics	2004 Summer
Remzi Öztürk		Wrestling	1992 Summer
Sebahattin Öztürk			1992 Summer, 1996 Summer
Yusuf Öztürk		Boxing	1996 Summer
Zeki Öztürk		Athletics	1988 Summer, 1992 Summer
Tacettin Öztürkmen		Track cycling	1928 Summer
İhsan Sabri Özün		Swimming	1984 Summer
Kemal Sadri Özün			1984 Summer
Çiğdem Özyaman		Shooting	2012 Summer
Ahmet Suat Özyazıcı		Football	1960 Summer
İlke Özyüksel		Modern pentathlon	2016 Summer, 2020 Summer, 2024 Summer

References

1. "How many athletes compete in the Olympics, and more details by the numbers for the 2024 Paris Games". cbsnews.com .
2. "How many athletes are in the Paris Olympics, and other key numbers". washingtonpost.com .
3. "Olympic Athletes - Biographies, Medals & More". olympics.com .