Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Li Peijing | SHO | Olympics | 2012 | 4–1–2 2011 Shenzhen SHO gold: 50 m rifle prone, 50 m rifle three positions team, and 50 m rifle prone team; 2013 Kazan SHO gold: 50 m rifle three positions team, bronze: 50 m rifle three positions and 10 m air rifle team; 2015 Gwangju SHO silver: 50 m rifle prone team | |
| Li Qing | DIV | Olympics | 1988 | 1–0–0 1987 Zagreb DIV gold: 3 m springboard | |
| Li Qiumei | ATH | Olympics | 2000 | 1–0–0 2001 Beijing ATH gold: discus throw | |
| Li Ting | DIV | Olympics | 2004 | 5–1–0 2003 Daegu DIV gold: platform; 2005 İzmir DIV gold: platform, synchronized springboard and synchronized platform; 2007 Bangkok DIV gold: 3 m springboard, silver: synchronized springboard | |
| Li Ting | TEN | Olympics | 2000—2004 | 1–0–0 2001 Beijing TEN gold: doubles | |
| Li Xiaoping | GAR | Olympics | 1984 | 1–0–1 1981 București GYM gold: pommelled horse, bronze: team | |
| Li Xuanxu | SWM | Olympics | 2008—2012 | 0–1–0 2015 Gwangju SWI silver: 4×200 m freestyle relay (swam in heats only) | |
| Li Xuemei | ATH | Olympics | 2000—2004 | 2–0–0 2001 Beijing ATH gold: 200 m and 4×100 m relay | |
| Li Yanfeng | ATH | Olympics | 2004—2012 | 0–2–0 2001 Beijing ATH silver: discus throw; 2003 Daegu ATH silver: discus throw | |
| Li Yang | SHO | Olympics | 2008 | 0–1–0 2011 Shenzhen SHO silver: trap team | |
| Li Yihua | DIV | Olympics | 1984 | 1–2–0 1981 București DIV gold: 3 m springboard, silver: platform; 1985 Kobe DIV silver: 3 m springboard | |
| Li Yuehong | SHO | Olympics | 2016—2024 | 3–1–1 2011 Shenzhen SHO gold: 25 m rapid fire pistol team and 25 m standard pistol team, bronze: 25 m rapid fire pistol; 2013 Kazan SHO gold: 25 m standard pistol team, silver: 25 m standard pistol | |
| Li Yuejiu | GAR | Olympics | 1984 | 1–1–2 1981 București GYM gold: horse vault, silver: parallel bars, bronze: floor and team | |
| Li Zhenzhu | ATH | Olympics | 2008—2012 | 0–1–0 2011 Shenzhen ATH silver: half marathon team | |
| Olha Liakhova | ATH | Olympics | 2016 | 0–1–0 2017 Taipei ATH silver: 800 m | |
| Liang Jun | FEN | Olympics | 1992—1996 | 0–1–1 1991 Sheffield FEN silver: foil team; 1995 Fukuoka FEN bronze: foil team | |
| Liang Qin | FEN | Olympics | 2000 | 0–1–1 1995 Fukuoka FEN silver: épée team; 1999 Palma de Mallorca FEN bronze: épée team | |
| Liang Weifen | SWM | Olympics | 1984 | 0–1–0 1981 București SWI silver: 100 m breaststroke | |
| Sergio Liani | ATH | Olympics | 1968—1972 | 0–0–1 1970 Torino ATH bronze: 110 m hurdles | |
| Elmar Lichtenegger | ATH | Olympics | 1996—2000 | 0–1–0 2001 Beijing ATH silver: 110 m hurdles | |
| Kamila Lićwinko | ATH | Olympics | 2016—2020 | 1–0–0 2013 Kazan ATH gold: high jump (competed as Kamila Stepaniuk) | |
| Lien Chen-Ling | JUD | Olympics | 2016—2024 | 0–0–1 2013 Kazan JUD bronze: lightweight -57 kg | |
| Ciro Liguori | ROW | Olympics | 1992 | 1–0–0 1989 Duisburg ROW gold: eights | |
| Kristine Lilly | FBL | Olympics | 1996—2004 | 0–1–0 1993 Buffalo FTB silver | |
| Felipe Lima | SWM | Olympics | 2012—2020 | 0–1–0 2007 Bangkok SWI silver: 50 m breaststroke | |
| Luiz Lima | SWM | Olympics | 1996—2000 | 2–3–0 1995 Fukuoka SWI silver: 800 m freestyle and 1500 m freestyle; 1997 Catania SWI gold: 400 m freestyle and 1500 m freestyle, silver: 800 m freestyle | |
| Odalmis Limonta | ATH | Olympics | 1992 | 0–1–0 1993 Buffalo ATH silver: 4×400 m relay | |
| Marianne Limpert | SWM | Olympics | 1992—2000 | 2–1–0 1993 Buffalo SWI gold: 200 m medley and 4×200 m freestyle relay, silver: 4×100 m freestyle relay | |
| Lin Li | SWM | Olympics | 1988—1996 | 3–1–0 1991 Sheffield SWI gold: 200 m backstroke, 200 m medley, and 400 m medley, silver: 200 m breaststroke | |
| Lin Sang | ARC | Olympics | 2004 | 0–1–0 2003 Daegu ARC silver: recurve team | |
| Lin Shih-Chia | ARC | Olympics | 2016 | 1–0–0 2015 Gwangju ARC gold: recurve team | |
| Lin Yi-Chun | SHO | Olympics | 2000—2024 | 1–0–0 2007 Bangkok SHO gold: double trap team | |
| Lin Yue | DIV | Olympics | 2008—2016 | 2–0–0 2011 Shenzhen DIV gold: synchronized platform and team | |
| Lin Zhiai | ROW | Olympics | 1992 | 0–1–0 1989 Duisburg ROW silver: lightweight coxless pairs | |
| Dörte Lindner | DIV | Olympics | 2000 | 2–0–1 1995 Fukuoka DIV gold: 1 m springboard and team, bronze: 3 m springboard | |
| Mike Lindsay | ATH | Olympics | 1960—1964 | 0–2–0 1963 Porto Alegre ATH silver: shot put and discus throw | |
| Kim Linehan | SWM | Olympics | 1984 | 2–0–0 1981 București SWI gold: 400 m freestyle and 800 m freestyle | |
| Ling Guang | BKB | Olympics | 1988 | 0–0–1 1987 Zagreb BAS bronze | |
| Ling Jie | GAR | Olympics | 2000 | 1–1–0 2001 Beijing GYM gold: team, silver: uneven bars | |
| Hermann Lingnau | ATH | Olympics | 1960 | 1–0–0 1959 Torino ATH gold: shot put (competed for West Germany) | |
| Joanna Linkiewicz | ATH | Olympics | 2016—2020 | 2–1–0 2015 Gwangju ATH gold: 400 m hurdles and 4×400 m relay; 2017 Taipei ATH silver: 400 m hurdles | |
| Mikhail Lipsky | ATH | Olympics | 2004 | 0–0–1 2005 İzmir ATH bronze: 4×400 m relay | |
| Viktor Lipsnis | ATH | Olympics | 1960—1964 | 1–0–0 1961 Sofia ATH gold: shot put | |
| Adam Lisewski | FEN | Olympics / Referee | 1968—1984 | 2–1–1 1963 Porto Alegre FEN gold: foil team and épée team; 1965 Budapest FEN bronze: épée team; 1970 Torino FEN silver: foil team | |
| Iryna Lishchynska | ATH | Olympics | 2004—2008 | 1–0–0 1997 Catania ATH gold: 800 m (competed as Iryna Nedelenko) | |
| Yekaterina Lisina | BKB | Olympics | 2008 | 0–1–0 2009 Beograd BAS silver | |
| Oleh Lisohor | SWM | Olympics | 2000—2008 | 6–2–1 2001 Beijing SWI gold: 50 m breaststroke and 100 m breaststroke, silver: 4×100 m medley relay; 2003 Daegu SWI gold: 4×100 m medley relay; silver: 50 m breaststroke, bronze: 100 m breaststroke; 2005 İzmir SWI gold: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley relay | |
| Nataliya Lisovskaya | ATH | Olympics | 1988—1992 | 3–0–0 1983 Edmonton ATH gold: shot put (competed for the Soviet Union); 1985 Kobe ATH gold: shot put (competed for the Soviet Union; 1987 Zagreb ATH gold: shot put (competed for the Soviet Union | |
| Katarína Listopadová | SWM | Olympics / YOG | 2010—2016 | 0–0–1 2015 Gwangju SWI bronze: 100 m butterfly | |
| Jay Litherland | SWM | Olympics | 2016—2020 | 1–0–0 2015 Gwangju SWI gold: 400 m medley | |
| Artur Litvinchuk | CSP | Olympics | 2008 | 0–1–1 2013 Kazan CAN silver: K4 500 m, bronze: K4 1000 m | |
| Liu Ailing | FBL | Olympics | 1996—2000 | 1–0–0 1993 Buffalo FTB gold | |
| Liu Huana | FBL | Olympics / Non-starter | 2004—2008 | 0–0–1 2003 Daegu FTB bronze | |
| Liu Jing | SWM | Olympics | 2008—2012 | 0–0–3 2011 Shenzhen SWI bronze: 200 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay | |
| Liu Jun | BKB | Olympics | 1992—1996 | 1–0–0 1993 Buffalo BAS gold | |
| Liu Limin | SWM | Olympics | 1996—2000 | 1–1–1 1995 Fukuoka SWI gold: 100 m butterfly, silver: 200 m butterfly, bronze: 4×100 m medley relay | |
| Liu Ping | WPO | Olympics | 2008—2012 | 2–0–0 2009 Beograd WAP gold; 2011 Shenzhen WAP gold | |
| Liu Qing | ATH | Olympics | 2008 | 0–0–1 2005 İzmir ATH bronze: 1500 m | |
| Liu Qing | BKB | Olympics | 1984—1992 | 0–0–1 1987 Zagreb BAS bronze | |
| Liu Wei-Ting | TKW | Olympics | 2016—2020 | 0–1–4 2015 Gwangju TKW bronze: welterweight -80 kg; 2017 Taipei TKW silver: Kyorugi team, bronze: welterweight -80 kg; 2019 Napoli TKW bronze: welterweight -80 kg and Kyorugi team | |
| Liu Xia | JUD | Olympics | 2004 | 1–1–0 2003 Daegu JUD gold: heavyweight +78 kg, silver: team | |
| Liu Xiang | ATH | Olympics / Olympic Flagbearer / Closing Flagbearer | 2004—2014 | 1–0–0 2001 Beijing ATH gold: 110 m hurdles | |
| Liu Xiangrong | ATH | Olympics | 2012 | 0–1–0 2013 Kazan ATH silver: shot put | |
| Liu Xiao | FEN | Olympics | 2012 | 1–0–0 2009 Beograd FEN gold: sabre team | |
| Liu Xirong | ROW | Olympics | 1992—1996 | 0–0–1 1989 Duisburg ROW bronze: coxless fours | |
| Liu Xuan | GAR | Olympics | 1996—2000 | 0–0–2 1999 Palma de Mallorca GYM bronze: all-around and team | |
| Liu Yinghui | ATH | Olympics | 2004 | 1–1–0 2003 Daegu ATH gold: hammer throw; 2005 İzmir ATH silver: hammer throw | |
| Liu Yudong | BKB | Olympics / Opening Flagbearer | 1996—2000 | 0–0–1 1993 Buffalo BAS bronze | |
| Liu Yuhuang | ATH | Olympics | 1984 | 0–1–0 1981 București ATH silver: long jump | |
| Liu Zhaowu | ARC | Olympics | 2012 | 1–0–0 2011 Shenzhen ARC gold: recurve team | |
| Ari-Pekka Liukkonen | SWM | Olympics / Opening Flagbearer | 2012—2020 | 1–0–0 2017 Taipei SWI gold: 50 m freestyle | |
| Mariya Liver | SWM | Olympics | 2012 | 1–0–0 2015 Gwangju SWI gold: 50 m breaststroke | |
| Judy Livermore-Simpson | ATH | Olympics | 1980—1988 | 0–0–2 1983 Edmonton ATH bronze: heptathlon; 1985 Kobe ATH bronze: heptathlon (competed as Judy Simpson) | |
| Andrew Livingston | SWM | Olympics | 2000—2004 | 1–0–0 1997 Catania SWI gold: 4×100 m medley relay (swam in heats only) (competed for the United States) | |
| Hector Llatser | ATH | Olympics / Non-starter | 1976—1984 | 0–0–1 1983 Edmonton ATH bronze: 4×400 m relay | |
| Andrea Lloyd | BKB | Olympics | 1988 | 0–1–0 1985 Kobe BAS silver | |
| Lo Pin | BK3 | YOG | 2014 | 0–0–1 2017 Taipei BAS bronze | |
| Igor Lobanov | DIV | Olympics | 1964 | 0–0–1 1970 Torino DIV bronze: 3 m springboard | |
| Liliya Lobanova | ATH | Non-starter | 2012 | 0–0–2 2005 İzmir ATH bronze: 4×400 m relay (competed as Liliya Pilyuhina); 2011 Shenzhen ATH bronze: 800 m | |
| Nikita Lobintsev | SWM | Olympics | 2008—2016 | 3–3–0 2007 Bangkok SWI silver: 4×200 m freestyle relay; 2013 Kazan SWI gold: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay (swam in heats only), silver: 100 m freestyle and 200 m freestyle | |
| Nataliya Lobova | CSP | Olympics | 2012 | 0–2–0 2013 Kazan CAN silver: K2 500 m and K4 200 m | |
| Artyom Lobuzov | SWM | Olympics | 2012 | 1–0–0 2013 Kazan SWI gold: 4×200 m freestyle relay | |
| Luigi Lodde | SHO | Olympics | 2012—2016 | 1–0–0 2007 Bangkok SHO gold: skeet team | |
| Mihaela Loghin | ATH | Olympics | 1984 | 0–1–1 1975 Roma ATH silver: shot put; 1979 Ciudad de México ATH bronze: shot put | |
| Lidiya Loginova | VVO | Olympics | 1980 | 1–0–0 1977 Sofia VOL gold | |
| Tatyana Logunova | FEN | Olympics | 2000—2016 | 1–2–1 1997 Catania FEN silver: épée team; 1999 Palma de Mallorca FEN bronze: épée; 2001 Beijing FEN silver: épée team; 2003 Daegu FEN gold: épée team | |
| Loh Wei Sheng | BDM | YOG | 2010 | 0–0–1 2013 Kazan BDM bronze: doubles | |
| Paval Lohunov | SAL | Olympics | 2008 | 0–1–0 2005 İzmir SAI silver: 470 men | |
| Katarína Lokšová-Ráczová | FEN | Olympics | 1972—1980 | 1–0–0 1977 Sofia FEN gold: foil (competed as Katarína Ráczová) | |
| Patrick Loliger | ROW | Olympics | 2008—2012 | 0–1–0 2013 Kazan ROW silver: single sculls | |
| Grzegorz Łomacz | VVO | Olympics | 2016—2024 | 0–1–0 2013 Kazan VOL silver | |
| Patrizia Lombardo | ATH | Olympics | 1984 | 0–0–1 1981 București ATH bronze: 4×100 m relay | |
| Carsten Lömker | CSP | Olympics | 1988 | 1–1–0 1987 Zagreb CAN gold: K2 1000 m, silver: K2 500 m | |
| Marcel Lomnický | ATH | Olympics | 2012—2020 | 0–2–0 2011 Shenzhen ATH silver: hammer throw; 2013 Kazan ATH silver: hammer throw | |
| Warren Long | GAR | Olympics | 1984 | 0–1–0 1983 Edmonton GYM silver: horse vault | |
| Jeannie Longo-Ciprelli | CRD/CTR | Olympics | 1984—2008 | 0–1–1 1983 Edmonton CYC silver: 3000 m individual pursuit, bronze: road race | |
| Balázs Lontay | FEN | Olympics | 2008 | 0–1–0 2007 Bangkok FEN silver: sabre | |
| Laurens Looije | ATH | Olympics | 1996 | 0–0–1 2001 Beijing ATH bronze: pole vault | |
| Aliuska López | ATH | Olympics | 1992—2004 | 0–1–0 1987 Zagreb ATH silver: 100 m hurdles (competed for Cuba) | |
| Denisse López | GAR | Olympics | 1992—2000 | 1–0–0 1997 Catania GYM gold: horse vault | |
| Erick López | GAR | Olympics | 2000—2004 | 0–0–1 1999 Palma de Mallorca GYM bronze: all-around | |
| Isel López | ATH | Olympics | 1992—1996 | 1–1–0 1991 Sheffield ATH silver: javelin throw; 1997 Catania ATH gold: javelin throw | |
| Mijaín López | WRE | Olympics / Opening Flagbearer / Closing Flagbearer | 2004—2024 | 1–0–0 2005 İzmir WRE gold: Greco-Roman super-heavyweight -120 kg | |
| Stanislav Lopukhov | SWM | Olympics | 1996 | 1–0–3 1995 Fukuoka SWI bronze: 100 m breaststroke and 4×100 m medley relay (swam in heats only); 1997 Catania SWI gold: 100 m breaststroke, bronze: 4×100 m medley relay | |
| Stanko Lorger | ATH | Olympics | 1952—1960 | 1–0–0 1959 Torino ATH gold: 110 m hurdles | |
| Claudia Losch | ATH | Olympics | 1984—1988 | 0–1–0 1983 Edmonton ATH silver: shot put | |
| Roland Losert | FEN | Olympics / Opening Flagbearer | 1964—1972 | 0–0–1 1967 Tokyo FEN bronze: épée | |
| Ivan Losev | ATH | Olympics | 2012—2020 | 0–1–0 2013 Kazan ATH silver: 20 km walk team | |
| Paul Lotman | VVO | Olympics | 2012 | 0–0–1 2007 Bangkok VOL bronze | |
| Tiffany Lott-Hogan | ATH | Olympics | 2004 | 1–0–0 1999 Palma de Mallorca ATH gold: heptathlon (competed as Tiffany Lott) | |
| Hermann Lotter | SWM | Olympics | 1960—1964 | 0–0–1 1961 Sofia SWI bronze: 200 m butterfly (competed for West Germany) | |
| Lou Yun | GAR | Olympics | 1984—1988 | 3–2–0 1983 Edmonton GYM gold: horse vault, silver: team; 1987 Zagreb GYM gold: floor and horse vault, silver: team | |
| Greg Louganis | DIV | Olympics | 1976—1988 | 2–0–0 1983 Edmonton DIV gold: 3 m springboard and platform | |
| Christina Loukas | DIV | Olympics | 2008—2012 | 0–2–1 2007 Bangkok DIV silver: 3 m springboard and team, bronze: synchronized springboard | |
| Stephan Louw | ATH | Olympics | 2000—2008 | 0–1–0 2001 Beijing ATH silver: long jump | |
| Patty Loverock | ATH | Olympics | 1976 | 0–0–1 1975 Roma ATH bronze: 100 m | |
| Vladimir Lovetsky | ATH | Olympics | 1972 | 0–1–0 1973 Moskva ATH silver: 4×100 m relay | |
| Eddie Lovett | ATH | Olympics / Closing Flagbearer | 2016—2020 | 1–0–0 2013 Kazan ATH gold: 110 m hurdles | |
| Fița Lovin | ATH | Olympics | 1980—1984 | 0–0–1 1979 Ciudad de México ATH bronze: 1500 m | |
| Nelson Loyola | FEN | Olympics | 2000 | 0–1–0 1989 Duisburg FEN silver: épée team | |
| Lu Yen-Hsun | TEN | Olympics / Opening Flagbearer | 2004—2020 | 1–0–1 2001 Beijing TEN bronze: singles; 2003 Daegu TEN gold: singles | |
| Lu Ying | SWM | Olympics | 2012—2016 | 5–0–2 2011 Shenzhen SWI gold: 50 m butterfly, 100 m butterfly, and 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 2015 Gwangju SWI gold: 50 m butterfly and 100 m butterfly | |
| Lu Yun-Feng | TTE | Olympics | 2004 | 0–1–1 2007 Bangkok TTN bronze: doubles; 2009 Belgrade TTN silver: mixed doubles | |
| Isbel Luaces | ATH | Olympics | 1996—2004 | 0–1–1 1999 Palma de Mallorca ATH bronze: javelin throw; 2001 Beijing ATH silver: javelin throw | |
| Jujie Luan | FEN | Olympics | 1984—2008 | 2–0–0 1983 Edmonton FEN gold: foil team (competed as Luan Jujie for China); 1985 Kobe FEN gold: foil (competed as Luan Jujie for China) | |
| Adam Lucas | SWM | Olympics | 2004 | 0–0–1 2003 Daegu SWI bronze: 200 m medley | |
| Andrea Lucchetta | VVO | Olympics | 1984—1992 | 0–0–1 1987 Zagreb VOL bronze | |
| Pier Paolo Lucchetta | VVO | Olympics | 1984—1988 | 0–0–1 1987 Zagreb VOL bronze | |
| Jean-Michel Lucenay | FEN | Olympics | 2016 | 1–1–0 2003 Daegu FEN gold: épée; 2005 İzmir GYM silver: épée team | |
| Ion Luchianov | ATH | Olympics | 2004—2012 | 1–1–1 2005 İzmir ATH silver: 3000 m steeplechase; 2007 Bangkok ATH bronze: 3000 m steeplechase; 2009 Beograd ATH gold: 3000 m steeplechase | |
| Samantha Lucie-Smith | SWM | Olympics | 2012 | 0–1–0 2011 Shenzhen SWI silver: 4×200 m freestyle relay (swam in heats only) | |
| Michael Ludwig | FEN | Olympics | 1992—2000 | 0–1–0 1999 Palma de Mallorca FEN silver: foil | |
| Yevgeny Lukantsov | CSP | Olympics | 2016—2020 | 0–0–1 2013 Kazan CAN bronze: K2 500 m | |
| Volodymyr Lukashenko | FEN | Olympics | 2000—2004 | 1–2–0 2003 Daegu FEN gold: sabre, silver: sabre team; 2005 İzmir FEN silver: sabre team | |
| Oleksiy Lukashevych | ATH | Olympics / Non-starter | 2000—2004 | 1–0–0 1999 Palma de Mallorca ATH gold: long jump | |
| Theresa Luke | ROW | Olympics | 1996—2000 | 1–0–0 1993 Buffalo ROW gold: eights | |
| Darius Lukminas | BKB | Olympics | 1996 | 0–1–0 1989 Duisburg BAS silver (competed for the Soviet Union) | |
| Boris Lukomsky | FEN | Olympics | 1976—1980 | 1–1–2 1973 Moskva FEN gold: épée team, bronze: épée; 1977 Sofia FEN silver: épée, bronze: épée team | |
| Diadenis Luna | JUD | Olympics | 1996—2000 | 0–1–0 1995 Fukuoka JUD silver: half-heavyweight -72 kg | |
| Jashia Luna | DIV | Olympics | 2000—2008 | 0–1–1 2005 İzmir DIV silver: synchronized springboard, bronze: synchronized platform | |
| Noëmi Lung | SWM | Olympics | 1988—1992 | 5–0–2 1987 Zagreb SWI gold: 200 m freestyle, 400 m freestyle, 800 m freestyle, 200 m medley, and 400 m medley, bronze: 200 m butterfly and 4×200 m freestyle relay | |
| Alexandru Lungu | JUD | Olympics | 1996 | 1–0–0 1999 Palma de Mallorca JUD gold: open class | |
| Luo Xiaojuan | FEN | Olympics | 2012 | 0–1–2 2003 Daegu FEN silver: épée team, bronze: épée; 2007 Bangkok FEN bronze: épée team | |
| Luo Xuejuan | SWM | Olympics | 2000—2004 | 3–1–0 2003 Daegu SWI gold: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley relay, silver: 200 m breaststroke | |
| Luo Yu | BDM | Olympics | 2016 | 0–2–0 2013 Kazan BDM silver: doubles and team | |
| Luo Yutong | DIV | Olympics | 2012 | 2–3–0 2007 Bangkok DIV gold: team, silver: 1 m springboard and 3 m springboard; 2013 Kazan DIV gold: team, silver: synchronized springboard | |
| Edoardo Luperi | FEN | YOG | 2010 | 0–1–2 2013 Kazan silver: foil team, bronze: foil; 2017 Taipei bronze: foil team | |
| Yurisleidys Lupetey | JUD | Olympics | 2004—2012 | 1–0–1 2001 Beijing JUD gold: lightweight -57 kg; 2003 Daegu JUD bronze: lightweight -57 kg | |
| Annika Lurz | SWM | Olympics | 2008 | 0–2–2 2005 İzmir SWI silver: 100 m freestyle and 200 m freestyle, bronze: 200 m backstroke (competed as Annika Liebs); 2007 Bangkok SWI bronze: 4×100 m freestyle relay | |
| Thomas Lurz | OWS/SWM | Olympics | 2004—2012 | 0–1–0 2005 İzmir SWI silver: 1500 m freestyle | |
| Deni Lušić | WPO | Olympics | 1984—1988 | 0–0–1 1987 Zagreb WAP bronze | |
| Jānis Lūsis | ATH | Olympics | 1964—1976 | 1–0–0 1963 Porto Alegre ATH gold: javelin throw | |
| Remo Lütolf | SWM | Olympics | 2000—2004 | 0–1–0 2001 Beijing SWI silver: 50 m breaststroke | |
| Mark Lutz | ATH | Olympics | 1976 | 1–0–0 1973 Moskva ATH gold: 4×400 m relay | |
| Igor Luzhkovsky | SWM | Olympics | 1960 | 2–1–1 1959 Torino SWI gold: 100 m freestyle and 400 m freestyle; 1961 Sofia SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay | |
| Bénédicte Luzuy-Dorfman | ROW | Olympics | 2000 | 0–0–1 1993 Buffalo ROW bronze: coxless fours | |
| Kirill Lyapunov | CSP | Olympics | 2016 | 2–0–0 2013 Kazan CAN gold: K4 200 m and K4 500 m | |
| Hanna Łyczbińska | FEN | Olympics | 2016—2024 | 0–1–1 2011 Shenzhen FEN silver: foil team; 2017 Taipei FEN bronze: foil team | |
| Andrea Lynch | ATH | Olympics / Non-starter | 1972—1980 | 0–1–1 1977 Sofia ATH silver: 100 m, bronze: 200 m | |
| Jair Lynch | GAR | Olympics | 1992—1996 | 0–0–2 1993 Buffalo GYM bronze: parallel bars and team | |
| Dmytro Lysenko | DIV | Olympics | 2000—2004 | 0–0–1 2007 Bangkok DIV bronze: synchronized springboard | |
| Tatyana Lysenko | GAR | Olympics | 1992 | 2–0–0 1993 Buffalo GYM gold: all-around and balance beam (competed for Ukraine) | |
| Anton Lyuboslavsky | ATH | Olympics | 2008 | 0–0–1 2005 İzmir ATH bronze: shot put | |
| Tamara Lyukhina-Zamotaylova | GAR | Olympics | 1960—1964 | 0–1–0 1961 Sofia GYM silver: all-around (competed as Tamara Lyukhina) | |
| Shukri Lyutviev | WRE | Olympics | 1976 | 1–0–0 1977 Sofia WRE gold: freestyle light-heavyweight -90 kg | |
| Paval Lyzhyn | ATH | Olympics | 2004—2012 | 0–1–0 2003 Daegu ATH silver: shot put | |
| Ma Chengqing | BKB | Olympics | 1996 | 1–1–0 1993 Buffalo BAS gold; 2001 Beijing BAS silver | |
| Ma Duanbin | JUD | Olympics | 2016 | 0–0–1 2011 Shenzhen JUD bronze: half-lightweight -66 kg | |
| Ma Huanhuan | WPO | Olympics | 2008—2016 | 2–0–0 2009 Beograd WAP gold; 2011 Shenzhen WAP gold | |
| Ma Jian | BKB | Olympics | 1992 | 0–1–0 2001 Beijing BAS silver | |
| Ma Jianfei | FEN | Olympics | 2012—2016 | 0–0–1 2009 Beograd FEN bronze: foil team | |
| Ma Ning | ATH | Olympics | 2004 | 0–1–0 2005 İzmir ATH silver: javelin throw | |
| Ma Zhongqing | BKB | Olympics | 1996 | 1–0–0 1993 Buffalo BAS gold | |
| Annelies Maas | SWM | Olympics | 1976—1980 | 1–4–3 1979 Ciudad de México SWI gold: 200 m freestyle, silver: 800 m freestyle and 4×100 m freestyle relay, bronze: 100 m freestyle, 400 m freestyle, and 4×100 m medley relay relay; 1983 Edmonton SWI silver: 100 m freestyle and 200 m freestyle (competed as Annelies Kraus) | |
| Kamiel Maase | ATH | Olympics | 2000—2008 | 1–0–0 1997 Catania ATH gold: 10000 m | |
| Aurel Macarencu | CSP | Olympics | 1988 | 2–0–0 1987 Zagreb CAN gold: C1 500 m and C1 1000 m | |
| Sorin Macavei | VVO | Olympics | 1980 | 1–0–0 1981 București VOL gold | |
| Todd MacCulloch | BKB | Olympics | 2000 | 0–0–1 1995 Fukuoka BAS bronze | |
| Byron MacDonald | SWM | Olympics | 1972 | 0–1–0 1973 Moskva SWI silver: 100 m butterfly | |
| Marcos Macedo | SWM | Olympics | 2016 | 0–1–0 2011 Shenzhen SWI silver: 4×100 m freestyle relay | |
| Ismail Mačev | ATH | Olympics | 1988 | 0–1–0 1987 Zagreb ATH silver: 4×400 m relay | |
| Maíla Machado | ATH | Olympics | 2004—2016 | 0–1–0 2001 Beijing ATH silver: 4×100 m relay | |
| Marcelinho Machado | BKB | Olympics | 2012 | 0–0–1 1997 Catania BAS bronze | |
| Daniel Machek | SWM | Olympics | 1980 | 1–0–1 1981 București SWI gold: 400 m freestyle, bronze: 400 m medley | |
| Remigius Machura | ATH | Olympics | 1988 | 1–0–0 1985 Kobe ATH gold: shot put | |
| Monika Maciejewska | FEN | Olympics | 1992 | 0–0–1 1991 Sheffield FEN bronze: foil team | |
| Jonas Mačiulis | BKB | Olympics | 2008—2016 | 1–0–0 2007 Bangkok BAS gold | |
| Brittany MacLean | SWM | Olympics | 2012—2016 | 0–0–2 2013 Kazan SWI bronze: 4×100 m freestyle relay and 4×200 m freestyle relay | |
| Milan Mačvan | BKB | Olympics | 2016 | 1–0–0 2009 Belgrade BAS gold | |
| Norbert Madaras | WPO | Olympics | 2004—2012 | 0–0–1 2001 Beijing WAP bronze | |
| Csilla Madarász-Dobay | SWM | Olympics | 1960—1964 | 6–0–0 1963 Porto Alegre SWI gold: 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay (competed as Csilla Madarász); 1965 Budapest SWI gold: 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay (competed as Csilla Madarász) | |
| Keri Maddox | ATH | Olympics | 2000 | 0–0–1 1991 Sheffield ATH bronze: 100 m hurdles | |
| Barbara Madejczyk | ATH | Olympics | 2004—2008 | 1–0–0 2003 Daegu ATH gold: javelin throw | |
| Matthieu Madelaine | SWM | Olympics | 2008 | 1–0–0 2005 İzmir SWI gold: 4×100 m freestyle relay | |
| Stefka Madina | ROW | Olympics | 1988 | 0–1–0 1987 Zagreb ROW silver: quadruple sculls | |
| Djan Madruga | SWM | Olympics | 1976—1984 | 1–3–3 1979 Ciudad de México SWI gold: 400 m medley, silver: 200 m backstroke; 1981 București SWI silver: 400 m freestyle and 200 m backstroke, bronze: 200 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay | |
| Levente Mady | SWM | Olympics | 1984 | 0–1–0 1981 București SWI silver: 200 m butterfly | |
| Giuseppe Maffei | ATH | Olympics | 2000—2004 | 1–0–0 1999 Palma de Mallorca ATH gold: 3000 m steeplechase | |
| Michele Maffei | FEN | Olympics | 1968—1980 | 0–1–1 1970 Torino FEN silver: sabre, bronze: sabre team | |
| Maurren Maggi | ATH | Olympics / Closing Flagbearer | 2000—2012 | 1–2–1 1999 Palma de Mallorca ATH bronze: long jump; 2001 Beijing ATH gold: long jump, silver: 100 m hurdles and 4×100 m relay |