Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Jeremy Linn |  USA |
SWM | Olympics | 1996 | 0–1–0 1998 Perth SWI silver: 4×100 m medley relay (swam in heats only) |
| Kiki Liosi |  GRE |
WPO | Olympics | 2004—2008 | 1–0–0 2011 Shanghai WAP gold |
| Silke Lippok |  GER |
SWM | Olympics | 2012 | 0–0–1 2011 Shanghai SWI bronze: 4×100 m freestyle relay |
| Oleh Lisohor |  UKR |
SWM | Olympics | 2000—2008 | 2–1–0 2001 Fukuoka SWI gold: 50 m breaststroke; 2003 Barcelona SWI silver: 50 m breaststroke; 2007 Melbourne SWI gold: 50 m breaststroke |
| Jay Litherland | USA |
SWM | Olympics | 2016—2020 | 0–1–1 2017 Budapest SWI bronze: 4×200 m freestyle relay (swam in heats only); 2019 Gwangju SWI silver: 400 m medley |
| Tracy Little |  CAN |
SWA | Olympics | 2008—2012 | 0–0–1 2011 Shanghai SYN bronze: team Free Routine Combination |
| Liu Huixia |  CHN |
DIV | Olympics | 2016 | 2–0–0 2013 Barcelona DIV gold: synchronized platform; 2015 Kazan DIV gold: synchronized platform |
| Liu Jing | CHN |
SWM | Olympics | 2008—2012 | 1–0–1 2009 Roma SWI gold: 4×200 m freestyle relay; 2011 Shanghai SWI bronze: 4×200 m freestyle relay |
| Liu Limin | CHN |
SWM | Olympics | 1996—2000 | 3–0–0 1994 Roma SWI gold: 100 m butterfly, 200 m butterfly, and 4×100 m medley relay |
| Liu Ou | CHN |
SWA | Olympics | 2008—2012 | 0–5–2 2009 Roma SYN silver: team Free Routine Combination, bronze: team Technical and team Free; 2011 Shanghai SYN silver: duet Technical, team Technical, team Free, and team Free Routine Combination |
| Liu Ping | CHN |
WPO | Olympics | 2008—2012 | 0–1–0 2011 Shanghai WAP silver |
| Liu Xiang | CHN |
SWM | Olympics | 2016 | 0–0–1 2015 Kazan SWI bronze: 50 m backstroke |
| Liu Zige | CHN |
SWM | Olympics | 2008—2012 | 1–1–1 2009 Roma SWI silver: 200 m butterfly; 2011 Shanghai SWI bronze: 200 m butterfly; 2013 Barcelona SWI gold: 200 m butterfly |
| Nicole Livingstone-Stevenson |  AUS |
SWM | Olympics | 1988—1996 | 0–1–0 1991 Perth SWI silver: 4×100 m medley relay (competed as Nicole Livingstone) |
| Sandra Lizé | CAN |
WPO | Olympics | 2000 | 0–0–1 2001 Fukuoka WAP bronze |
| Danyon Loader |  NZL |
SWM | Olympics | 1992—1996 | 0–1–2 1994 Roma SWI silver: 200 m butterfly; 1994 Roma SWI bronze: 200 m freestyle and 400 m freestyle |
| Nikita Lobintsev |  RUS |
SWM | Olympics | 2008—2016 | 0–4–1 2009 Roma SWI silver: 4×200 m freestyle relay; 2013 Barcelona SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2015 Kazan SWI silver: 4×100 m freestyle relay; 2017 Budapest SWI silver: 4×200 m freestyle relay (swam in heats only) |
| Artyom Lobuzov | RUS |
SWM | Olympics | 2012 | 0–1–0 2013 Barcelona SWI silver: 4×200 m freestyle relay |
| Ryan Lochte | USA |
SWM | Olympics | 2004—2016 | 18–5–4 2005 Montréal SWI gold: 4×200 m freestyle relay, bronze: 200 m backstroke and 200 m medley; 2007 Melbourne SWI gold: 200 m backstroke and 4×200 m freestyle relay, silver: 100 m backstroke, 200 m medley, and 400 m medley; 2009 Roma SWI gold: 200 m medley, 400 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay, bronze: 200 m backstroke; 2011 Shanghai SWI gold: 200 m freestyle, 200 m backstroke, 200 m medley, 400 m medley, and 4×200 m freestyle relay, bronze: 4×100 m freestyle relay (swam in heats only); 2013 Barcelona SWI gold: 200 m backstroke, 200 m medley, and 4×200 m freestyle relay, silver: 4×100 m freestyle relay; 2015 Kazan SWI gold: 200 m Medley, 4×100 m medley relay (swam in heats only), and 4×100 m freestyle mixed relay, 4×200 m freestyle relay |
| Sven Lodziewski |  GDR |
SWM | Olympics | 1988 | 1–1–3 1982 Guayaquil SWI bronze: 400 m freestyle (competed for East Germany); 1986 Madrid SWI gold: 4×200 m freestyle relay, silver: 200 m freestyle, bronze: 4×100 m freestyle relay (competed for East Germany); 2001 Fukuoka SWI bronze: 4×100 m freestyle relay (competed for Germany) |
| Thomas Loebb |  FRG |
WPO | Olympics | 1984 | 0–0–1 1982 Guayaquil WAP bronze |
| Luka Lončar |  CRO |
WPO | Olympics | 2016—2024 | 1–1–2 2013 Barcelona WAP bronze; 2015 Kazan WAP silver; 2017 Budapest WAP gold; 2019 Gwangju WAP bronze |
| Martín López-Zubero |  ESP |
SWM | Olympics | 1988—1996 | 2–1–1 1991 Perth SWI gold: 200 m backstroke, bronze: 100 m backstroke; 1994 Roma SWI gold: 100 m backstroke, silver: 200 m backstroke |
| Daniel López | ESP |
WPO | Olympics | 2012—2020 | 0–2–0 2009 Roma WAP silver; 2019 Gwangju WAP silver |
| Laura López | ESP |
WPO | Olympics | 2012—2016 | 1–0–0 2013 Barcelona WAP gold |
| Ericka Lorenz | USA |
WPO | Olympics | 2000—2004 | 2–1–0 2003 Barcelona WAP gold; 2005 Montréal WAP silver; 2007 Melbourne WAP gold |
| Greg Louganis | USA |
DIV | Olympics | 1976—1988 | 5–0–0 1978 West Berlin DIV gold: platform; 1982 Guayaquil DIV gold: 3 m springboard and platform; 1986 Madrid DIV gold: 3 m springboard and platform |
| Lea Loveless | USA |
SWM | Olympics | 1992 | 2–1–0 1994 Roma SWI silver: 4×100 m medley relay; 1998 Perth SWI gold: 100 m backstroke and 4×100 m medley relay |
| Sara Lowe | USA |
SWA | Olympics | 2004 | 0–1–1 2003 Barcelona SYN silver: team Free Routine Combination, bronze: team |
| Lu Bin | CHN |
SWM | Olympics | 1992 | 3–2–0 1994 Roma SWI gold: 200 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 100 m freestyle and 200 m freestyle |
| Lu Ying | CHN |
SWM | Olympics | 2012—2016 | 1–2–3 2011 Shanghai SWI silver: 4×100 m medley relay, bronze: 100 m butterfly; 2013 Barcelona SWI silver: 50 m butterfly; 2015 Kazan SWI gold: 4×100 m medley relay, bronze: 50 m butterfly and 100 m butterfly |
| Lu Zhiwu | CHN |
SWM | Olympics | 2008—2012 | 0–0–1 2013 Barcelona SWI bronze: 4×200 m freestyle relay (swam in heats only) |
| Adam Lucas | AUS |
SWM | Olympics | 2004 | 0–0–1 2005 Montréal SWI bronze: 4×200 m freestyle relay (swam in heats only) |
| Wendy Lucero | USA |
DIV | Olympics | 1988 | 0–1–0 1991 Perth DIV silver: 1 m springboard |
| Igor Lukashin | RUS |
DIV | Olympics | 2000 | 0–0–1 1998 Perth DIV bronze: synchronized platform |
| Kristina Lum | USA |
SWA | Olympics | 2000 | 0–1–1 1998 Perth SYN bronze: team; 2015 Kazan SYN silver: duet Free (mixed) (competed as Kristina Lum-Underwood) |
| Steve Lundquist | USA |
SWM | Olympics / Olympic Flagbearer | 1984—1996 | 3–0–0 1978 West Berlin SWI gold: 4×100 m medley relay (swam in heats only); 1982 Guayaquil SWI gold: 100 m breaststroke and 4×100 m medley relay |
| Noëmi Lung |  ROU |
SWM | Olympics | 1988—1992 | 0–0–1 1986 Madrid SWI bronze: 400 m medley |
| Luo Nan | CHN |
SWM | Olympics | 2008 | 0–0–1 2007 Melbourne SWI bronze: 4×100 m medley relay |
| Luo Xi | CHN |
SWA | Olympics | 2008—2012 | 0–4–2 2009 Roma SYN silver: team Free Routine Combination, bronze: team Technical and team Free; 2011 Shanghai SYN silver: team Technical, team Free, and team Free Routine Combination |
| Luo Xuejuan | CHN |
SWM | Olympics | 2000—2004 | 5–0–2 2001 Fukuoka SWI gold: 50 m breaststroke and 100 m breaststroke, bronze: 200 m breaststroke and 4×100 m medley relay; 2003 Barcelona SWI gold: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley relay |
| Luo Yutong | CHN |
DIV | Olympics | 2012 | 2–0–0 2007 Melbourne DIV gold: 1 m springboard; 2011 Shanghai DIV gold: synchronized springboard |
| Yannick Lupien | CAN |
SWM | Olympics | 2000—2004 | 0–1–0 2005 Montréal SWI silver: 4×100 m freestyle relay |
| Annika Lurz | GER |
SWM | Olympics | 2008 | 0–3–0 2005 Montréal SWI silver: 4×100 m freestyle relay; 2007 Melbourne SWI silver: 200 m freestyle and 4×200 m freestyle relay |
| Thomas Lurz | GER |
OWS/SWM | Olympics | 2004—2012 | 8–4–2 2005 Montréal SWI gold: 5 km open water and 10 km open water team, silver: 10 km open water; 2007 Melbourne SWI gold: 5 km open water, silver: 10 km open water; 2009 Roma SWI gold: 5 km open water and 10 km open water; 2011 Shanghai SWI gold: 5 km open water, silver: 10 km open water, bronze: 5 km open water team; 2013 Barcelona SWI gold: 25 km open water and 5 km open water team, silver: 10 km open water, bronze: 5 km open water |
| Deni Lušić | CRO YUG |
WPO | Olympics | 1984—1988 | 1–0–0 1986 Madrid WAP gold |
| Marianna Lymperta | GRE |
OWS/SWM | Olympics | 2000—2012 | 0–0–1 2011 Shanghai SWI bronze: 10 km open water |
| Ma Huanhuan | CHN |
WPO | Olympics | 2008—2016 | 0–1–0 2011 Shanghai WAP silver |
| Annelies Maas |  NED |
SWM | Olympics | 1976—1980 | 0–0–2 1982 Guayaquil SWI bronze: 200 m freestyle and 4×100 m freestyle relay |
| Marko Macan | CRO |
WPO | Olympics | 2016—2020 | 1–0–1 2017 Budapest WAP gold; 2019 Gwangju WAP bronze |
| Ian MacKenzie | CAN |
SWM | Olympics | 1972 | 0–0–1 1973 Belgrade SWI bronze: 4×100 m medley relay |
| Linda MacKenzie | AUS |
SWM | Olympics | 2004—2008 | 0–2–0 2003 Barcelona SWI silver: 4×200 m freestyle relay; 2005 Montréal SWI silver: 4×200 m freestyle relay |
| Norbert Madaras |  HUN |
WPO | Olympics | 2004—2012 | 2–2–0 2003 Barcelona WAP gold; 2005 Montréal WAP silver; 2007 Melbourne WAP silver; 2013 Barcelona WAP gold |
| István Magas | HUN |
WPO | Olympics | 1972 | 0–2–0 1975 Cali WAP silver; 1978 West Berlin WAP silver |
| Filippo Magnini |  ITA |
SWM | Olympics | 2004—2016 | 2–1–1 2005 Montréal SWI gold: 100 m freestyle; 2007 Melbourne SWI gold: 100 m freestyle, silver: 4×100 m freestyle relay; 2015 Kazan SWI bronze: 4×100 m freestyle relay |
| Christine Magnuson | USA |
SWM | Olympics | 2008 | 1–0–0 2011 Shanghai SWI gold: 4×100 m medley relay (swam in heats only) |
| James Magnussen | AUS |
SWM | Olympics | 2012—2016 | 3–2–0 2011 Shanghai SWI gold: 100 m freestyle and 4×100 m freestyle relay, silver: 4×100 m medley relay; 2013 Barcelona SWI gold: 100 m freestyle, silver: 4×100 m medley relay |
| Per-Alvar Magnusson |  SWE |
SWM | Olympics | 1980 | 0–0–2 1978 West Berlin SWI bronze: 4×100 m freestyle relay; 1982 Guayaquil SWI bronze: 4×100 m freestyle relay (swam in heats only) |
| Sandrine Mainville | CAN |
SWM | Olympics | 2016 | 0–0–2 2015 Kazan SWI bronze: 4×100 m freestyle mixed relay; 2017 Budapest SWI bronze: 4×100 m freestyle mixed relay (swam in heats only) |
| Nikolay Maksimov |  KAZRUS |
WPO | Olympics | 1996—2012 | 0–0–1 1994 Roma WAP bronze (competed for Russia) |
| Giusi Malato | ITA |
WPO | Olympics | 2004 | 2–1–1 1994 Roma WAP bronze; 1998 Perth WAP gold; 2001 Fukuoka WAP gold; 2003 Barcelona WAP silver |
| Tom Malchow | USA |
SWM | Olympics | 1996—2004 | 0–1–2 1998 Perth SWI bronze: 200 m butterfly; 2001 Fukuoka SWI silver: 200 m butterfly; 2003 Barcelona SWI bronze: 200 m butterfly |
| Blai Mallarach | ESP |
WPO | Olympics | 2012—2020 | 0–2–0 2009 Roma WAP silver; 2019 Gwangju WAP silver |
| Grégory Mallet |  FRA |
SWM | Olympics | 2008—2016 | 1–1–2 2007 Melbourne SWI bronze: 4×100 m freestyle relay (swam in heats only); 2009 Roma SWI bronze: 4×100 m freestyle relay; 2011 Shanghai SWI silver: 4×200 m freestyle relay; 2013 Barcelona SWI gold: 4×100 m freestyle relay (swam in heats only) |
| Florent Manaudou | FRA |
SWM | Olympics / Athlete Oath Taker / Opening Flagbearer | 2012—2024 | 4–0–0 2013 Barcelona SWI gold: 4×100 m freestyle relay; 2015 Kazan SWI gold: 50 m freestyle, 50 m butterfly, and 4×100 m freestyle relay |
| Laure Manaudou | FRA |
SWM | Olympics / Torch Bearer | 2004—2024 | 3–2–1 2005 Montréal SWI gold: 400 m freestyle; 2007 Melbourne SWI gold: 200 m freestyle and 400 m freestyle, silver: 800 m freestyle and 100 m backstroke, bronze: 4×200 m freestyle relay |
| Dušan Mandić |  SRB |
WPO | Olympics / Opening Flagbearer | 2012—2024 | 1–0–1 2015 Kazan WAP gold; 2017 Budapest WAP bronze |
| Andrea Mangiante | ITA |
WPO | Olympics | 2008 | 0–1–0 2003 Barcelona WAP silver |
| Krisztián Manhercz | HUN |
WPO | Olympics | 2016—2024 | 0–1–0 2017 Budapest WAP silver |
| Simone Manuel | USA |
SWM | Olympics | 2016—2024 | 11–3–2 2013 Barcelona SWI gold: 4×100 m freestyle relay (swam in heats only); 2015 Kazan SWI gold: 4×100 m freestyle mixed relay, bronze: 4×100 m freestyle relay; 2017 Budapest SWI gold: 100 m freestyle, 4×100 m freestyle relay, 4×100 m medley relay, 4×100 m freestyle mixed relay, and 4×100 m medley mixed relay, bronze: 50 m freestyle; 2019 Gwangju SWI gold: 50 m freestyle, 100 m freestyle, 4×100 m medley relay, and 4×100 m freestyle mixed relay, silver: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley mixed relay |
| Roxana Maracineanu | FRA |
SWM | Olympics | 2000 | 1–0–0 1998 Perth SWI gold: 200 m backstroke |
| Xavier Marchand | FRA |
SWM | Olympics | 1996—2000 | 0–1–0 1998 Perth SWI silver: 200 m medley |
| Igor Marchenko | RUS |
SWM | Olympics | 2000—2004 | 0–2–1 2001 Fukuoka SWI bronze: 4×100 m medley relay (swam in heats only); 2003 Barcelona SWI silver: 4×100 m medley relay; 2005 Montréal SWI silver: 4×100 m medley relay |
| Gustavo Marcos | ESP |
WPO | Olympics | 2000—2004 | 2–1–0 1994 Roma WAP silver; 1998 Perth WAP gold; 2001 Fukuoka WAP gold |
| Élise Marcotte | CAN |
SWA | Olympics | 2008—2012 | 0–0–2 2009 Roma SYN bronze: team Free Routine Combination; 2011 Shanghai SYN bronze: team Free Routine Combination |
| Tamás Märcz | HUN |
WPO | Olympics / Coach | 2000—2020 | 0–1–0 1998 Perth WAP silver |
| Melanie Margalis | USA |
SWM | Olympics | 2016 | 2–1–0 2017 Budapest SWI gold: 4×200 m freestyle relay; 2019 Gwangju SWI gold: 4×100 m medley relay (swam in heats only), silver: 4×200 m freestyle relay |
| Luca Marin | ITA |
SWM | Olympics | 2004—2016 | 0–1–1 2005 Montréal SWI silver: 400 m medley; 2007 Melbourne SWI bronze: 400 m medley |
| Laura Marino | FRA |
DIV | Olympics | 2016 | 1–0–0 2017 Budapest DIV gold: team |
| Sergey Markoch |  MDA URS EUN |
WPO | Olympics | 1988—1992 | 0–0–2 1986 Madrid WAP bronze (competed for the Soviet Union); 1994 Roma WAP bronze (competed for Russia) |
| Pavo Marković | CRO |
WPO | Olympics | 2008 | 1–0–0 2007 Melbourne WAP gold |
| Aleksey Markovsky | RUSURS |
SWM | Olympics | 1980 | 0–3–1 1982 Guayaquil SWI silver: 4×100 m freestyle relay and 4×100 m medley relay; 1986 Madrid SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay |
| Elicia Marshall | USA |
SWA | Olympics | 2000 | 0–0–1 1998 Perth SYN bronze: team |
| Melanie Marshall |  GBR |
SWM | Olympics | 2004—2008 | 0–1–0 2001 Fukuoka SWI silver: 4×100 m freestyle relay |
| Sante Marsili | ITA |
WPO | Olympics | 1972—1980 | 1–0–1 1975 Cali WAP bronze; 1978 West Berlin WAP gold |
| Josée Marsolais | CAN |
WPO | Olympics | 2000 | 0–0–1 2001 Fukuoka WAP bronze |
| David Martín | ESP |
WPO | Olympics / Coach | 2008—2024 | 0–1–1 2007 Melbourne WAP bronze; 2009 Roma WAP silver |
| Angel Martino | USA |
SWM | Olympics | 1992—1996 | 0–2–0 1994 Roma SWI silver: 4×100 m freestyle relay and 4×100 m medley relay (swam in heats only) |
| Yana Martynova | RUS |
SWM | Olympics | 2004—2012 | 0–1–0 2007 Melbourne SWI silver: 400 m medley |
| Kei Marumo |  JPN |
SWA | Olympics | 2016 | 0–0–5 2015 Kazan SYN bronze: team Technical, team Free, and team Free Routine Combination; 2017 Budapest SYN bronze: team Technical and team Free Routine Combination |
| Chiara Masini Luccetti | ITA |
SWM | Olympics | 2016 | 0–1–0 2015 Kazan SWI silver: 4×200 m freestyle relay |
| Kylie Masse | CAN |
SWM | Olympics | 2016—2024 | 2–0–3 2017 Budapest SWI gold: 100 m backstroke, bronze: 4×100 m medley mixed relay; 2019 Gwangju SWI gold: 100 m backstroke, bronze: 200 m backstroke and 4×100 m medley relay |
| Lou Massenberg | GER |
DIV | YOG | 2018 | 0–0–1 2019 Gwangju DIV bronze: synchronized springboard (mixed) |
| Manon Masseurs | NED |
SWM | Olympics | 1996 | 0–1–1 1991 Perth SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay (swam in heats only) |
| Courtney Mathewson | USA |
WPO | Olympics | 2012—2016 | 1–0–0 2015 Kazan WAP gold |
| Antony Matkovich | AUS |
SWM | Olympics | 2004 | 2–0–0 2001 Fukuoka SWI gold: 4×200 m freestyle relay (swam in heats only); 2003 Barcelona SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Takeshi Matsuda | JPN |
SWM | Olympics | 2004—2016 | 0–2–1 2005 Montréal SWI silver: 200 m butterfly; 2009 Roma SWI bronze: 200 m butterfly; 2011 Shanghai SWI silver: 200 m butterfly |
| Ayako Matsumura | JPN |
SWA | Olympics | 2008 | 0–4–2 2005 Montréal SYN silver: team and team Free Routine Combination; 2007 Melbourne SYN silver: team Technical and team Free Routine Combination; 2007 Melbourne SYN bronze: duet Free and team Free |
| Ami Matsuo | AUS |
SWM | YOG | 2014 | 0–1–0 2013 Barcelona SWI silver: 4×200 m freestyle relay (swam in heats only) |
| Jordan Mattern | USA |
SWM | YOG | 2010 | 1–0–0 2013 Barcelona SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Roland Matthes | GDR |
SWM | Olympics | 1968—1976 | 3–1–1 1973 Belgrade SWI gold: 100 m backstroke and 200 m backstroke, silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay; 1975 Cali SWI gold: 100 m backstroke |
| Matti Mattsson |  FIN |
SWM | Olympics / YOG | 2010—2024 | 0–0–1 2013 Barcelona SWI bronze: 200 m breaststroke |
| Angela Maurer | GER |
OWS | Olympics | 2008—2012 | 1–3–4 2001 Fukuoka SWI bronze: 25 km open water; 2003 Barcelona SWI silver: 10 km open water, bronze: 25 km open water; 2009 Roma SWI gold: 25 km open water; 2011 Shanghai SWI silver: 25 km open water; 2013 Barcelona SWI silver: 25 km open water, bronze: 10 km open water; 2015 Kazan SWI bronze: 25 km open water |
| Bronwyn Mayer-Smith | AUS |
WPO | Olympics | 2000—2004 | 0–0–1 1998 Perth WAP bronze (competed as Bronwyn Smith) |
| Wijda Mazereeuw | NED |
SWM | Olympics | 1972—1976 | 0–2–1 1975 Cali SWI silver: 100 m breaststroke and 200 m breaststroke, bronze: 4×100 m medley relay |
| Dimitrios Mazis | GRE |
WPO | Olympics | 2000—2008 | 0–0–1 2005 Montréal WAP bronze |
| Raimundas Mažuolis |  LTUURS |
SWM | Olympics / Opening Flagbearer | 1988—1996 | 0–0–1 1994 Roma SWI bronze: 50 m freestyle (competed for Lithuania) |
| Martha McCabe | CAN |
SWM | Olympics | 2012—2016 | 0–0–1 2011 Shanghai SWI bronze: 200 m breaststroke |
| Alan McClatchey | GBR |
SWM | Olympics | 1976 | 0–1–0 1975 Cali SWI silver: 4×200 m freestyle relay |
| Caitlin McClatchey | GBR |
SWM | Olympics | 2004—2012 | 0–0–2 2005 Montréal SWI bronze: 400 m freestyle; 2009 Roma SWI bronze: 4×200 m freestyle relay |
| Alicia McCormack | AUS |
WPO | Olympics | 2008—2012 | 0–1–0 2007 Melbourne WAP silver |
| Cameron McEvoy | AUS |
SWM | Olympics | 2012—2024 | 0–4–2 2013 Barcelona SWI silver: 4×100 m medley relay (swam in heats only); 2015 Kazan SWI silver: 100 m freestyle and 4×100 m medley relay, bronze: 4×200 m freestyle relay; 2019 Gwangju SWI silver: 4×100 m freestyle mixed relay (swam in heats only), bronze: 4×100 m freestyle relay |
| Lauren McFall | USA |
SWA | Olympics | 2004 | 0–1–1 2003 Barcelona SYN silver: team Free Routine Combination, bronze: team |
| Tracey McFarlane | USA |
SWM | Olympics | 1988 | 1–0–0 1991 Perth SWI gold: 4×100 m medley relay |
| Tyler McGill | USA |
SWM | Olympics | 2012 | 2–0–1 2009 Roma SWI gold: 4×100 m medley relay (swam in heats only); 2011 Shanghai SWI gold: 4×100 m medley relay (swam in heats only), bronze: 100 m butterfly |
| David McKeon | AUS |
SWM | Olympics | 2012—2016 | 0–0–1 2015 Kazan SWI bronze: 4×200 m freestyle relay |
| Emma McKeon | AUS |
SWM | Olympics / YOG | 2010—2024 | 4–9–4 2013 Barcelona SWI silver: 4×100 m freestyle relay, 4×200 m freestyle relay (swam in heats only), and 4×100 m medley relay (swam in heats only); 2015 Kazan SWI gold: 4×100 m freestyle relay, bronze: 4×100 m medley relay; 2017 Budapest SWI silver: 200 m freestyle, 100 m butterfly, 4×100 m freestyle relay, and 4×100 m medley mixed relay, bronze: 4×200 m freestyle relay and 4×100 m medley relay; 2019 Gwangju SWI gold: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley mixed relay, silver: 4×100 m medley relay and 4×100 m freestyle mixed relay, bronze: 100 m butterfly |
| Kaylee McKeown | AUS |
SWM | Olympics / YOG / Closing Flagbearer | 2018—2024 | 0–3–0 2017 Budapest SWI silver: 4×100 m medley mixed relay (swam in heats only); 2019 Gwangju SWI silver: 200 m backstroke and 4×100 m medley relay (swam in heats only) |
| Taylor McKeown | AUS |
SWM | Olympics | 2016 | 0–0–2 2015 Kazan SWI bronze: 4×100 m medley relay; 2017 Budapest SWI bronze: 4×100 m medley relay |
| Matt McLean | USA |
SWM | Olympics | 2012 | 1–0–0 2013 Barcelona SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Jack McLoughlin | AUS |
SWM | Olympics | 2016—2020 | 1–0–0 2019 Gwangju SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Gavin Meadows | GBR |
SWM | Olympics | 2004 | 0–0–1 1998 Perth SWI bronze: 4×200 m freestyle relay |
| Mary T. Meagher | USA |
SWM | Olympics / Olympic Flagbearer | 1984—1996 | 2–5–2 1982 Guayaquil SWI gold: 100 m butterfly, silver: 200 m butterfly and 4×100 m medley relay; 1986 Madrid SWI gold: 200 m butterfly, silver: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay; 1986 Madrid SWI bronze: 200 m freestyle and 100 m butterfly |
| Chris Mears | GBR |
DIV | Olympics | 2012—2016 | 0–0–1 2015 Kazan DIV bronze: synchronized springboard |
| Etiene Medeiros |  BRA |
SWM | Olympics | 2016—2020 | 1–2–0 2015 Kazan SWI silver: 50 m backstroke; 2017 Budapest SWI gold: 50 m backstroke; 2019 Gwangju SWI silver: 50 m backstroke |
| Jolande van der Meer | NED |
SWM | Olympics | 1984 | 0–0–1 1986 Madrid SWI bronze: 4×200 m freestyle relay |
| Maud van der Meer | NED |
SWM | Olympics | 2016 | 1–2–2 2011 Shanghai SWI gold: 4×100 m freestyle relay (swam in heats only); 2015 Kazan SWI silver: 4×100 m freestyle relay; 2017 Budapest SWI silver: 4×100 m freestyle mixed relay (swam in heats only), bronze: 4×100 m freestyle relay and 4×100 m freestyle relay (swam in heats only) |
| Folkert Meeuw | FRG |
SWM | Olympics / Non-starter | 1968—1976 | 1–0–1 1973 Belgrade SWI bronze: 4×200 m freestyle relay; 1975 Cali SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Helge Meeuw | GER |
SWM | Olympics | 2004—2012 | 0–2–2 2003 Barcelona SWI bronze: 4×200 m freestyle relay (swam in heats only); 2009 Roma SWI silver: 100 m backstroke and 4×100 m medley relay; 2011 Shanghai SWI bronze: 4×100 m medley relay |
| Patricia Megens | NED |
WPO | Olympics | 2000 | 1–1–0 1986 Madrid WAP silver (competed as Patricia Libregts); 1991 Perth WAP gold (competed as Patricia Libregts) |
| Annika Mehlhorn | GER |
SWM | Olympics | 2004 | 0–1–2 2001 Fukuoka SWI silver: 200 m butterfly; 2005 Montréal SWI bronze: 4×100 m medley relay; 2009 Roma SWI bronze: 4×100 m medley relay |
| Kersten Meier | FRG |
SWM | Olympics | 1972 | 0–2–0 1975 Cali SWI silver: 4×100 m freestyle relay; 1978 West Berlin SWI silver: 4×100 m freestyle relay (swam in heats only) |
| Katie Meili | USA |
SWM | Olympics | 2016 | 1–1–1 2017 Budapest SWI gold: 4×100 m medley relay (swam in heats only), silver: 100 m breaststroke, bronze: 50 m breaststroke |
| Rūta Meilutytė | LTU |
SWM | Olympics / YOG | 2012—2024 | 1–2–0 2013 Barcelona SWI gold: 100 m breaststroke, silver: 50 m breaststroke; 2015 Kazan SWI silver: 100 m breaststroke |
| Katrin Meißner | GDRGER |
SWM | Olympics | 1988—2000 | 2–4–1 1991 Perth SWI gold: 4×50 m freestyle relay (demonstration event) and 4×200 m freestyle relay (swam in heats only), silver: 4×100 m freestyle relay (swam in heats only) (competed for Germany); 1994 Roma SWI bronze: 4×100 m freestyle relay (competed for Germany); 1998 Perth SWI silver: 4×100 m freestyle relay (competed for Germany); 2001 Fukuoka SWI gold: 4×100 m freestyle relay, silver: 100 m freestyle (competed for Germany); 2003 Barcelona SWI silver: 4×100 m freestyle relay (competed for Germany) |
| Jarl Inge Melberg |  NOR |
SWM | Olympics | 1992 | 0–0–0 1991 Perth bronze: 4×50 m freestyle relay (demonstration event) |
| Antiopi Melidoni | GRE |
WPO | Olympics | 2004 | 1–0–0 2011 Shanghai WAP gold |
| Oussama Mellouli |  TUN |
OWS/SWM | Olympics / Opening Flagbearer / Closing Flagbearer | 2000—2020 | 2–2–4 2003 Barcelona SWI bronze: 400 m medley; 2005 Montréal SWI bronze: 400 m freestyle and 400 m medley; 2009 Roma SWI gold: 1500 m freestyle, silver: 400 m freestyle and 800 m freestyle; 2013 Barcelona SWI gold: 5 km open water, bronze: 10 km open water |
| Nikolay Melnikov | RUSURS |
WPO | Olympics | 1972—1976 | 1–0–0 1975 Cali WAP gold |
| Kata Menczinger | HUN |
WPO | Olympics | 2012 | 0–0–1 2013 Barcelona WAP bronze |
| Nurlan Mendygaliyev | KAZURS |
WPO | Olympics | 1988 | 1–0–1 1982 Guayaquil WAP gold; 1986 Madrid WAP bronze |
| Gemma Mengual | ESP |
SWA | Olympics | 2000—2016 | 1–12–6 2003 Barcelona SYN silver: solo and team Free Routine Combination, bronze: duet; 2005 Montréal SYN silver: duet, bronze: solo, team, and team Free Routine Combination; 2007 Melbourne SYN silver: solo Technical, duet Technical, duet Free, and team Free, bronze: solo Free and team Technical; 2009 Roma SYN gold: team Free Routine Combination, silver: solo Technical, solo Free, duet Technical, duet Free, and team Free |
| Ona Meseguer | ESP |
WPO | Olympics | 2012 | 1–0–0 2013 Barcelona WAP gold |
| Nataliya Meshcheryakova | RUSEUN |
SWM | Olympics | 1992—1996 | 0–1–1 1994 Roma SWI silver: 50 m freestyle (competed for Russia), bronze: 4×100 m medley relay (competed for Russia) |
| Malia Metella | FRA |
SWM | Olympics | 2004—2008 | 0–1–0 2005 Montréal SWI silver: 100 m freestyle |
| Mehdy Metella | FRA |
SWM | Olympics / YOG | 2010—2020 | 1–0–3 2015 Kazan SWI gold: 4×100 m freestyle relay, bronze: 4×100 m medley relay; 2017 Budapest SWI bronze: 100 m freestyle; 2019 Gwangju SWI bronze: 4×100 m freestyle mixed relay |
| Caren Metschuck | GDR |
SWM | Olympics | 1980 | 1–1–0 1978 West Berlin SWI silver: 4×100 m freestyle relay; 1982 Guayaquil SWI gold: 4×100 m freestyle relay |
| Alex Meyer | USA |
OWS | Olympics | 2012 | 0–1–0 2015 Kazan SWI silver: 25 km open water |
| William Meynard | FRA |
SWM | Olympics | 2016 | 1–1–2 2009 Roma SWI bronze: 4×100 m freestyle relay (swam in heats only); 2011 Shanghai SWI silver: 4×100 m freestyle relay, bronze: 100 m freestyle; 2013 Barcelona SWI gold: 4×100 m freestyle relay (swam in heats only) |
| Martina Miceli | ITA |
WPO | Olympics | 2004—2008 | 2–1–1 1994 Roma WAP bronze; 1998 Perth WAP gold; 2001 Fukuoka WAP gold; 2003 Barcelona WAP silver |
| Rubén Michavila | ESP |
WPO | Olympics | 1992 | 1–1–0 1991 Perth WAP silver; 1998 Perth WAP gold |
| Chantelle Michell-Newbery | AUS |
DIV | Olympics | 2000—2008 | 0–1–1 1998 Perth DIV bronze: 3 m springboard (competed as Chantelle Michell); 2005 Montréal DIV silver: synchronized platform (competed as Chantelle Newbery) |
| Clément Mignon | FRA |
SWM | Olympics | 2016—2020 | 1–0–1 2015 Kazan SWI gold: 4×100 m freestyle relay (swam in heats only); 2019 Gwangju SWI bronze: 4×100 m freestyle mixed relay |
| Vladimir Mikheyev | RUSURS |
SWM | Olympics | 1976 | 0–0–1 1975 Cali SWI bronze: 4×200 m freestyle relay (swam in heats only) |
| Kristóf Milák | HUN |
SWM | Olympics / YOG / Closing Flagbearer | 2018—2024 | 1–1–0 2017 Budapest SWI silver: 100 m butterfly; 2019 Gwangju SWI gold: 200 m butterfly |
| Igor Milanović | SRB SCGYUG |
WPO | Olympics / Opening Flagbearer | 1984—1996 | 2–0–0 1986 Madrid WAP gold (competed for Yugoslavia); 1991 Perth WAP gold (competed for Yugoslavia) |
| Hannah Miley | GBR |
SWM | Olympics | 2008—2016 | 0–1–1 2009 Roma SWI bronze: 4×200 m freestyle relay (swam in heats only); 2011 Shanghai SWI silver: 400 m medley |
| Cody Miller | USA |
SWM | Olympics | 2016 | 2–0–0 2015 Kazan gold: 4×100 m medley relay (swam in heats only); 2017 Budapest SWI gold: 4×100 m medley relay (swam in heats only) |
| Alice Mills | AUS |
SWM | Olympics | 2004—2008 | 1–2–1 2003 Barcelona SWI silver: 200 m medley and 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2005 Montréal SWI gold: 4×100 m freestyle relay |
| John Mills | GBR |
SWM | Olympics | 1972—1976 | 0–0–1 1978 West Berlin SWI bronze: 4×100 m medley relay |
| Melissa Mills | AUS |
WPO | Olympics | 2000 | 0–0–1 1998 Perth WAP bronze |
| Stephen Milne | GBR |
SWM | Olympics | 2016 | 1–0–0 2017 Budapest SWI gold: 4×200 m freestyle relay |
| Miloš Milošević | CRO |
SWM | Olympics | 1996—2000 | 0–0–0 1991 Perth bronze: 50 m butterfly (demonstration event) |
| Andrey Minakov |  ROCRUS |
SWM | Olympics / YOG | 2018—2020 | 0–2–1 2019 Gwangju SWI silver: 100 m butterfly and 4×100 m freestyle relay (swam in heats only), bronze: 4×100 m medley relay |
| Sumika Minamoto | JPN |
SWM | Olympics | 1996—2000 | 0–0–1 1998 Perth SWI bronze: 4×100 m medley relay |
| Gianni Minervini | ITA |
SWM | Olympics | 1984—1992 | 0–1–1 1986 Madrid SWI silver: 100 m breaststroke; 1991 Perth SWI bronze: 100 m breaststroke |
| Marc Minguell | ESP |
WPO | Olympics | 2008—2016 | 0–1–1 2007 Melbourne WAP bronze; 2009 Roma WAP silver |
| Viktor Minibayev | ROCRUS |
DIV | Olympics | 2012—2020 | 0–4–1 2013 Barcelona DIV silver: synchronized platform; 2015 Kazan DIV bronze: synchronized platform; 2017 Budapest DIV silver: synchronized platform; 2019 Gwangju DIV silver: synchronized platform and synchronized platform (mixed) |
| Mike Mintenko | CAN |
SWM | Olympics | 2000—2004 | 0–1–0 2005 Montréal SWI silver: 4×100 m freestyle relay |
| Arturo Miranda | CAN |
DIV | Olympics | 2008 | 0–1–0 2007 Melbourne DIV silver: synchronized springboard |
| Lorena Miranda | ESP |
WPO | Olympics | 2012 | 1–0–0 2013 Barcelona WAP gold |
| Yelena Miroshina | RUSURSEUN |
DIV | Olympics | 1988—1992 | 0–1–0 1991 Perth DIV silver: platform (competed for the Soviet Union) |
| Alfio Misaggi | ITA |
WPO | Olympics | 1980—1988 | 0–1–0 1986 Madrid WAP silver |
| Saša Mišić |  MNE |
WPO | Olympics | 2016 | 0–1–0 2013 Barcelona WAP silver |
| Arsens Miskarovs |  LATURS |
SWM | Olympics | 1980 | 0–1–0 1978 West Berlin SWI silver: 200 m breaststroke |
| Maki Mita | JPN |
SWM | Olympics | 2000—2008 | 0–0–1 2001 Fukuoka SWI bronze: 4×200 m freestyle relay |
| Matt Mitcham | AUS |
DIV | Olympics | 2008—2012 | 0–0–1 2009 Roma DIV bronze: 1 m springboard |
| Betsy Mitchell | USA |
SWM | Olympics | 1984—1988 | 1–4–0 1986 Madrid SWI gold: 100 m backstroke, silver: 200 m backstroke, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay |
| Branislav Mitrović | SRB |
WPO | Olympics | 2016—2020 | 1–0–1 2015 Kazan WAP gold; 2017 Budapest WAP bronze |
| Stefan Mitrović | SRB |
WPO | Olympics | 2012—2020 | 2–1–1 2009 Roma WAP gold; 2011 Shanghai WAP silver; 2015 Kazan WAP gold; 2017 Budapest WAP bronze |
| Risako Mitsui | JPN |
SWA | Olympics | 2012—2016 | 0–0–4 2015 Kazan SYN bronze: duet Technical, team Technical, team Free, and team Free Routine Combination |
| Takiri Miyazaki | JPN |
DIV | Olympics | 2004 | 0–0–1 2001 Fukuoka DIV bronze: synchronized platform |
| Alice Mizzau | ITA |
SWM | Olympics | 2012—2016 | 0–1–0 2015 Kazan SWI silver: 4×200 m freestyle relay |
| Diana Mocanu | ROU |
SWM | Olympics | 2000 | 1–1–0 2001 Fukuoka SWI gold: 200 m backstroke, silver: 100 m backstroke |
| John Moffet | USA |
SWM | Olympics | 1984 | 1–0–2 1982 Guayaquil SWI gold: 4×100 m medley relay (swam in heats only), bronze: 100 m breaststroke and 200 m breaststroke |
| Guillermo Molina | ESP |
WPO | Olympics | 2004—2016 | 1–1–1 2001 Fukuoka WAP gold; 2007 Melbourne WAP bronze; 2009 Roma WAP silver |
| Endre Molnár | HUN |
WPO | Olympics | 1968—1980 | 1–2–0 1973 Belgrade WAP gold; 1975 Cali WAP silver; 1978 West Berlin WAP silver |
| Tamás Molnár | HUN |
WPO | Olympics | 2000—2008 | 1–3–0 1998 Perth WAP silver; 2003 Barcelona WAP gold; 2005 Montréal WAP silver; 2007 Melbourne WAP silver |
| Aurore Mongel | FRA |
SWM | Olympics | 2004—2008 | 0–0–1 2007 Melbourne SWI bronze: 4×200 m freestyle relay |
| Kenrick Monk | AUS |
SWM | Olympics | 2008—2012 | 1–1–1 2007 Melbourne SWI gold: 4×100 m medley relay (swam in heats only), silver: 4×200 m freestyle relay; 2009 Roma SWI bronze: 4×200 m freestyle relay |
| Ana Montero | ESP |
SWA | Olympics | 2004 | 0–1–0 2003 Barcelona SYN silver: team Free Routine Combination |
| Jim Montgomery | USA |
SWM | Olympics | 1976 | 8–1–1 1973 Belgrade SWI gold: 100 m freestyle, 200 m freestyle, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay; 1975 Cali SWI gold: 4×100 m freestyle relay, bronze: 100 m freestyle; 1978 West Berlin SWI gold: 4×100 m freestyle relay and 4×200 m freestyle relay (swam in heats only), silver: 100 m freestyle |
| Irene Montrucchio | ESP |
SWA | Non-starter | 2012 | 0–0–1 2011 Shanghai SYN bronze: team Free |
| Heather Moody | USA |
WPO | Olympics | 2000—2004 | 1–0–0 2003 Barcelona WAP gold |
| Hannah Moore | USA |
SWM | YOG | 2014 | 0–0–1 2019 Gwangju SWI bronze: 5 km open water |
| Adrian Moorhouse | GBR |
SWM | Olympics | 1984—1992 | 0–1–0 1991 Perth SWI silver: 100 m breaststroke |
| Pablo Morales | USA |
SWM | Olympics | 1984—1992 | 2–0–0 1986 Madrid SWI gold: 100 m butterfly and 4×100 m medley relay |
| Martina Moravcová |  CZE TCH SVK |
SWM | Olympics | 1992—2008 | 0–3–2 1998 Perth SWI silver: 100 m freestyle and 200 m freestyle, bronze: 200 m medley (competed for Slovakia); 2003 Barcelona SWI silver: 200 m freestyle, bronze: 100 m butterfly (competed for Slovakia) |
| Marcia Morey | USA |
SWM | Olympics | 1976 | 0–2–1 1973 Belgrade SWI silver: 4×100 m medley relay; 1975 Cali SWI silver: 4×100 m medley relay, bronze: 100 m breaststroke |
| David Morgan | AUS |
SWM | Olympics | 2016—2020 | 0–1–0 2015 Kazan SWI silver: 4×100 m medley relay (swam in heats only) |
