Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Tomomi Morita |  JPN |
SWM | Olympics | 2004—2008 | 0–1–2 2003 Barcelona SWI bronze: 4×100 m medley relay; 2005 Montréal SWI bronze: 4×100 m medley relay; 2007 Melbourne SWI silver: 4×100 m medley relay |
| Gerald Mörken |  FRG |
SWM | Olympics | 1984 | 0–0–2 1978 West Berlin SWI bronze: 100 m breaststroke; 1982 Guayaquil SWI bronze: 4×100 m medley relay |
| Daniel Moro |  ESP |
WPO | Olympics | 2000—2004 | 1–0–0 2001 Fukuoka WAP gold |
| Iván Moro | ESP |
WPO | Olympics | 1996—2004 | 2–0–0 1998 Perth WAP gold; 2001 Fukuoka WAP gold |
| Gisela Morón | ESP |
SWA | Non-starter | 2008 | 1–2–2 2003 Barcelona SYN silver: team Free Routine Combination; 2005 Montréal SYN bronze: team Free Routine Combination; 2007 Melbourne SYN silver: team Free, bronze: team Technical; 2009 Roma SYN gold: team Free Routine Combination |
| Vladimir Morozov |  ROC RUS |
SWM | Olympics | 2012—2020 | 0–3–3 2013 Barcelona SWI silver: 50 m freestyle bronze: 4×100 m freestyle relay; 2015 Kazan SWI silver: 4×100 m freestyle relay; 2017 Budapest SWI bronze: 4×100 m medley relay; 2019 Gwangju SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay |
| Ed Moses |  USA |
SWM | Olympics | 2000 | 1–0–1 2001 Fukuoka SWI bronze: 100 m breaststroke; 2003 Barcelona SWI gold: 4×100 m medley relay (swam in heats only) |
| Anthony Mosse |  NZL |
SWM | Olympics | 1984—1988 | 0–1–0 1986 Madrid SWI silver: 200 m butterfly |
| Miwako Motoyoshi | JPN |
SWA | Olympics | 1984 | 0–0–2 1982 Guayaquil SYN bronze: solo and team |
| Kostas Mourikis |  GRE |
WPO | Olympics | 2012—2020 | 0–0–1 2015 Kazan WAP bronze |
| Giorgi Mshvenieradze |  GEO URS |
WPO | Olympics | 1980—1988 | 1–0–1 1982 Guayaquil WAP gold; 1986 Madrid WAP bronze |
| Nuzgari Mshvenieradze | GEOURS |
WPO | Olympics | 1976 | 0–1–0 1973 Belgrade WAP silver |
| Camille Muffat |  FRA |
SWM | Olympics | 2008—2012 | 0–0–4 2011 Shanghai SWI bronze: 200 m freestyle and bronze: 400 m freestyle; 2013 Barcelona SWI bronze: 200 m freestyle and 4×200 m freestyle relay |
| Marianne Muis |  NED |
SWM | Olympics | 1988—1996 | 0–1–2 1986 Madrid SWI bronze: 4×200 m freestyle relay; 1991 Perth SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay |
| Mildred Muis | NED |
SWM | Olympics | 1988—1992 | 0–1–2 1986 Madrid SWI bronze: 4×200 m freestyle relay (swam in heats only); 1991 Perth SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay |
| Yury Mukhin | RUS EUN |
SWM | Olympics | 1992 | 0–2–0 1994 Roma SWI silver: 4×200 m freestyle relay and 4×100 m freestyle relay (swam in heats only) (competed for Russia) |
| Aurélie Muller | FRA |
OWS | Olympics | 2008—2016 | 3–3–0 2011 Shanghai SWI silver: 5 km open water; 2015 Kazan SWI gold: 10 km open water; 2017 Budapest SWI gold: 10 km open water and 4×1.25 km open water relay, silver: 5 km open water; 2019 Gwangju SWI silver: 5 km open water |
| Alberto Munárriz | ESP |
WPO | Olympics | 2016—2024 | 0–1–0 2019 Gwangju WAP silver |
| Rafa Muñoz | ESP |
SWM | Olympics | 2008 | 0–0–2 2009 Roma SWI bronze: 50 m butterfly and 100 m butterfly |
| Thalia Munro | USA |
WPO | Olympics | 2004 | 1–1–0 2003 Barcelona WAP gold; 2005 Montréal WAP silver |
| Diana Munz | USA |
SWM | Olympics | 2000—2004 | 2–3–2 1998 Perth SWI silver: 800 m freestyle; 2001 Fukuoka SWI gold: 4×200 m freestyle relay, silver: 800 m freestyle, bronze: 1500 m freestyle; 2003 Barcelona SWI gold: 4×200 m freestyle relay, silver: 800 m freestyle, bronze: 400 m freestyle |
| Ross Murdoch |  GBR |
SWM | Olympics | 2016—2020 | 1–1–1 2015 Kazan SWI gold: 4×100 m medley mixed relay (swam in heats only), bronze: 100 m breaststroke; 2017 Budapest SWI silver: 4×100 m medley relay (swam in heats only) |
| John Murphy | USA |
SWM | Olympics | 1972 | 3–1–0 1973 Belgrade SWI gold: 4×100 m freestyle relay; 1975 Cali SWI gold: 4×100 m freestyle relay and 4×100 m medley relay, silver: 100 m backstroke |
| Patrick Murphy |  AUS |
SWM | Olympics | 2004—2008 | 0–1–3 2005 Montréal SWI bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 2007 Melbourne SWI silver: 4×200 m freestyle relay; 2009 Roma SWI bronze: 4×200 m freestyle relay |
| Ryan Murphy | USA |
SWM | Olympics | 2016—2024 | 3–5–1 2015 Kazan SWI gold: 4×100 m medley relay, silver: 4×100 m medley mixed relay; 2017 Budapest SWI gold: 4×100 m medley relay (swam in heats only) and 4×100 m medley mixed relay (swam in heats only), silver: 200 m backstroke, bronze: 100 m backstroke; 2019 Gwangju SWI silver: 200 m backstroke, 4×100 m medley relay, and 4×100 m medley mixed relay |
| Petar Muslim |  CRO |
WPO | Olympics | 2012 | 0–1–2 2011 Shanghai WAP bronze; 2013 Barcelona WAP bronze; 2015 Kazan WAP silver |
| Maddie Musselman | USA |
WPO | Olympics | 2016—2024 | 3–0–0 2015 Kazan WAP gold; 2017 Budapest WAP gold; 2019 Gwangju WAP gold |
| Maddalena Musumeci |  ITA |
WPO | Olympics | 2004—2008 | 2–1–0 1998 Perth WAP gold; 2001 Fukuoka WAP gold; 2003 Barcelona WAP silver |
| Curtis Myden |  CAN |
SWM | Olympics | 1992—2000 | 0–0–1 1998 Perth SWI bronze: 400 m medley |
| Emmanouil Mylonakis | GRE |
WPO | Olympics | 2008—2016 | 0–0–2 2005 Montréal WAP bronze; 2015 Kazan WAP bronze |
| John Naber | USA |
SWM | Olympics / Olympic Flagbearer | 1976—1984 | 1–0–1 1973 Belgrade SWI gold: 4×100 m medley relay (swam in heats only), bronze: 200 m backstroke |
| Shayna Nackoney | CAN |
SWA | Olympics | 2004 | 0–0–1 2001 Fukuoka SYN bronze: team |
| Tomoko Nagai | JPN |
SWM | Olympics | 2004 | 0–0–1 2001 Fukuoka SWI bronze: 4×200 m freestyle relay |
| Viktor Nagy |  HUN |
WPO | Olympics | 2012—2020 | 1–2–0 2007 Melbourne WAP silver; 2013 Barcelona WAP gold; 2017 Budapest WAP silver |
| Riho Nakajima | JPN |
SWA | Olympics | 1996 | 0–1–0 1998 Perth SYN silver: team |
| Kanami Nakamaki | 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 |
| Mai Nakamura | JPN |
SWM | Olympics | 1996—2000 | 0–1–2 1998 Perth SWI silver: 100 m backstroke, bronze: 200 m backstroke and 4×100 m medley relay |
| Mai Nakamura | JPN |
SWA | Olympics | 2012—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 |
| Reiko Nakamura | JPN |
SWM | Olympics | 2004—2008 | 0–0–3 2005 Montréal SWI bronze: 200 m backstroke; 2007 Melbourne SWI bronze: 100 m backstroke and 200 m backstroke |
| Yuko Nakanishi | JPN |
SWM | Olympics | 2000—2008 | 0–0–2 2003 Barcelona SWI bronze: 200 m butterfly; 2005 Montréal SWI bronze: 200 m butterfly |
| Eric Namesnik | USA |
SWM | Olympics | 1992—1996 | 0–2–1 1991 Perth SWI silver: 200 m medley and 400 m medley; 1994 Roma SWI bronze: 400 m medley |
| Sergey Naumov | RUSURSEUN |
WPO | Olympics / Referee | 1988—2016 | 0–0–1 1986 Madrid WAP bronze (competed for the Soviet Union) |
| Meagen Nay | AUS |
SWM | Olympics | 2008—2012 | 0–0–1 2009 Roma SWI bronze: 4×100 m freestyle relay (swam in heats only) |
| Lia Neal | USA |
SWM | Olympics | 2012—2016 | 2–2–1 2015 Kazan SWI silver: 4×100 m medley mixed relay (swam in heats only), bronze: 4×100 m freestyle relay; 2017 Budapest SWI gold: 4×100 m freestyle relay (swam in heats only) and 4×100 m freestyle mixed relay (swam in heats only); 2019 Gwangju SWI silver: 4×100 m freestyle relay (swam in heats only) |
| Leah Neale | AUS |
SWM | Olympics | 2016—2020 | 1–0–1 2017 Budapest SWI bronze: 4×200 m freestyle relay (swam in heats only); 2019 Gwangju SWI gold: 4×200 m freestyle relay (swam in heats only) |
| Ryk Neethling |  RSA |
SWM | Olympics | 1996—2008 | 0–0–2 2005 Montréal SWI bronze: 100 m freestyle and 200 m freestyle |
| Jade Neilsen | AUS |
SWM | Olympics | 2012 | 0–1–0 2011 Shanghai SWI silver: 4×200 m freestyle relay (swam in heats only) |
| Gábor Nemes | HUN |
WPO | Olympics | 1992 | 0–0–1 1991 Perth WAP bronze |
| Stephanie Nesbitt | USA |
SWA | Olympics | 2004 | 0–1–1 2003 Barcelona SYN silver: team Free Routine Combination, bronze: team |
| Anthony Nesty |  SUR |
SWM | Olympics / Opening Flagbearer | 1984—2008 | 1–0–0 1991 Perth SWI gold: 100 m butterfly |
| Kiley Neushul | USA |
WPO | Olympics | 2016 | 3–0–0 2015 Kazan WAP gold; 2017 Budapest WAP gold; 2019 Gwangju WAP gold |
| Robert Newbery | AUS |
DIV | Olympics | 2000—2008 | 1–0–0 2003 Barcelona DIV gold: synchronized platform |
| Kotuku Ngawati | AUS |
SWM | Olympics | 2016 | 0–0–1 2017 Budapest SWI bronze: 4×200 m freestyle relay |
| Benny Nielsen |  DEN |
SWM | Olympics | 1988 | 0–0–1 1986 Madrid SWI bronze: 200 m butterfly |
| Mie Ø. Nielsen | DEN |
SWM | Olympics | 2012—2016 | 0–0–1 2015 Kazan SWI bronze: 100 m backstroke |
| Susanne Nielsson | DEN |
SWM | Olympics | 1976—1980 | 0–0–1 1978 West Berlin SWI bronze: 200 m breaststroke |
| Slobodan Nikić |  SRB SCG |
WPO | Olympics | 2004—2016 | 3–1–1 2003 Barcelona WAP bronze (competed for Serbia and Montenegro); 2005 Montréal WAP gold (competed for Serbia and Montenegro); 2009 Roma WAP gold (competed for Serbia); 2011 Shanghai WAP silver (competed for Serbia); 2015 Kazan WAP gold (competed for Serbia) |
| Ning Zetao |  CHN |
SWM | Olympics | 2016 | 1–0–0 2015 Kazan SWI gold: 100 m freestyle |
| Peter Nocke | FRG |
SWM | Olympics | 1976 | 1–2–1 1973 Belgrade SWI bronze: 4×200 m freestyle relay; 1975 Cali SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay and 4×100 m medley relay |
| Kathleen Nord |  GDR |
SWM | Olympics | 1988 | 2–1–1 1982 Guayaquil SWI gold: 4×100 m freestyle relay (swam in heats only), silver: 400 m medley; 1986 Madrid SWI gold: 400 m medley, bronze: 200 m medley |
| Justin Norris | AUS |
SWM | Olympics | 2000—2004 | 0–0–1 2001 Fukuoka SWI bronze: 200 m medley |
| Andrea Nott | USA |
SWA | Olympics | 2008 | 0–0–1 2007 Melbourne SYN bronze: team Free Routine Combination |
| Olga Novokshchenova | RUS |
SWA | Olympics | 1996—2004 | 1–0–0 1998 Perth SYN gold: team |
| Petra Nows | FRG |
SWM | Olympics | 1972 | 0–0–1 1973 Belgrade SWI bronze: 4×100 m medley relay |
| Georgios Ntoskas | GRE |
WPO | Olympics | 2008 | 0–0–1 2005 Montréal WAP bronze |
| Andrea Nugent | CAN |
SWM | Olympics | 1988—1992 | 0–0–0 1991 Perth silver: 4×50 m freestyle relay (demonstration event) |
| Lacey Nymeyer | USA |
SWM | Olympics | 2008 | 1–4–1 2005 Montréal SWI silver: 4×100 m medley relay (swam in heats only), bronze: 4×100 m freestyle relay; 2007 Melbourne SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay and 4×100 m medley relay; 2009 Roma SWI silver: 4×200 m freestyle relay |
| Stefan Nystrand |  SWE |
SWM | Olympics | 2000—2012 | 0–0–1 2007 Melbourne SWI bronze: 50 m freestyle |
| Mike O'Brien | USA |
SWM | Olympics | 1984 | 0–0–1 1986 Madrid SWI bronze: 4×200 m freestyle relay (swam in heats only) |
| Siobhan-Marie O'Connor | GBR |
SWM | Olympics | 2012—2016 | 1–0–1 2015 Kazan SWI gold: 4×100 m medley mixed relay, bronze: 200 m medley |
| Turlough O'Hare | CAN |
SWM | Olympics | 1988—1992 | 0–0–0 1991 Perth silver: 4×50 m freestyle relay (swam in heats only) (demonstration event) |
| Susie O'Neill | AUS |
SWM | Olympics / Administrator | 1992—2005 | 1–2–4 1991 Perth SWI silver: 4×100 m medley relay; 1994 Roma SWI bronze: 100 m butterfly and 200 m butterfly; 1998 Perth SWI gold: 200 m butterfly, silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Mo O'Toole | USA |
WPO | Olympics | 2000 | 0–0–2 1986 Madrid WAP bronze; 1991 Perth WAP bronze |
| Swann Oberson |  SUI |
OWS | Olympics | 2008—2012 | 1–0–0 2011 Shanghai SWI gold: 5 km open water |
| Paulo Obradović | CRO |
WPO | Olympics | 2012—2020 | 0–1–3 2009 Roma WAP bronze; 2011 Shanghai WAP bronze; 2013 Barcelona WAP bronze; 2015 Kazan WAP silver |
| Werner Obschernikat | FRG |
WPO | Olympics | 1976—1988 | 0–0–1 1982 Guayaquil WAP bronze |
| Miki Oca | ESP |
WPO | Olympics / Coach | 1992—2024 | 0–2–0 1991 Perth WAP silver; 1994 Roma WAP silver |
| Jahir Ocampo |  MEX |
DIV | Olympics | 2016 | 0–0–1 2013 Barcelona DIV bronze: synchronized springboard |
| Alexander Dale Oen |  NOR |
SWM | Olympics | 2004—2008 | 1–0–0 2011 Shanghai SWI gold: 100 m breaststroke |
| Johannes Oesterling |  GER |
SWM | Olympics | 2004 | 0–0–1 2003 Barcelona SWI bronze: 4×200 m freestyle relay |
| Aleksandr Ogorodnikov | RUSEUN |
WPO | Olympics | 1992 | 0–0–1 1994 Roma WAP bronze (competed for Russia) |
| Poliana Okimoto |  BRA |
OWS | Olympics | 2008—2016 | 1–1–2 2009 Roma SWI bronze: 5 km open water; 2013 Barcelona SWI gold: 10 km open water, silver: 5 km open water, bronze: 5 km open water team |
| Fumiko Okuno | JPN |
SWA | Olympics | 1992 | 0–2–2 1991 Perth SYN bronze: team; 1994 Roma SYN silver: solo and duet, bronze: team |
| Anna Olasz | HUN |
OWS/SWM | Olympics / YOG | 2010—2020 | 0–1–0 2015 Kazan SWI silver: 25 km open water |
| Penny Oleksiak | CAN |
SWM | Olympics / Closing Flagbearer | 2016—2024 | 0–0–5 2017 Budapest SWI bronze: 4×100 m freestyle mixed relay and 4×100 m medley mixed relay; 2019 Gwangju SWI bronze: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay |
| Marc-Antoine Olivier | FRA |
OWS | Olympics | 2016—2024 | 2–1–1 2017 Budapest SWI gold: 5 km open water and 4×1.25 km open water relay, bronze: 10 km open water; 2019 Gwangju SWI silver: 10 km open water |
| Jon Olsen | USA |
SWM | Olympics | 1992—1996 | 3–0–0 1994 Roma SWI gold: 4×100 m freestyle relay and 4×100 m medley relay (swam in heats only); 1998 Perth SWI gold: 4×100 m freestyle relay |
| Yevgeniya Olshevskaya | RUS |
DIV | Olympics | 2000 | 0–1–1 2001 Fukuoka DIV silver: synchronized platform; 2003 Barcelona DIV bronze: synchronized platform |
| Kano Omata | JPN |
SWA | Olympics | 2016 | 0–0–4 2015 Kazan SYN bronze: team Technical and team Free Routine Combination; 2017 Budapest SYN bronze: team Technical and team Free Routine Combination |
| Junko Onishi | JPN |
SWM | Olympics | 2000—2004 | 0–0–1 2001 Fukuoka SWI bronze: 100 m butterfly |
| Marjan op den Velde | NED |
WPO | Olympics | 2000 | 1–1–0 1991 Perth WAP gold; 1998 Perth WAP silver |
| Craig Oppel | USA |
SWM | Olympics | 1988 | 1–0–0 1986 Madrid SWI gold: 4×100 m medley relay (swam in heats only) |
| Annabelle Orme | USA |
SWA | Olympics | 2008 | 0–0–1 2007 Melbourne SYN bronze: team Free Routine Combination |
| Louise Ørnstedt | DEN |
SWM | Olympics | 2000—2004 | 0–1–0 2003 Barcelona SWI silver: 100 m backstroke |
| Marco Orsi | ITA |
SWM | Olympics | 2012—2016 | 0–0–1 2015 Kazan SWI bronze: 4×100 m freestyle relay |
| Bea Ortiz | ESP |
WPO | Olympics | 2016—2024 | 0–2–0 2017 Budapest WAP silver; 2019 Gwangju WAP silver |
| Mati Ortiz | ESP |
WPO | Olympics | 2012—2016 | 1–1–0 2013 Barcelona WAP gold; 2017 Budapest WAP silver |
| Stephanie Ortwig | FRG |
SWM | Olympics | 1988 | 1–0–0 1991 Perth SWI gold: 4×200 m freestyle relay (competed for Germany) |
| Leonid Osipov | RUSURS |
WPO | Olympics | 1964—1972 | 0–1–0 1973 Belgrade WAP silver |
| Farida Osman |  EGY |
SWM | Olympics | 2012—2020 | 0–0–2 2017 Budapest SWI bronze: 50 m butterfly; 2019 Gwangju SWI bronze: 50 m butterfly |
| Rainer Osselmann | FRG |
WPO | Olympics | 1984—1988 | 0–0–1 1982 Guayaquil WAP bronze |
| Simone Osygus | GER |
SWM | Olympics | 1992—1996 | 0–2–0 1991 Perth SWI gold: 4×50 m freestyle relay (demonstration event), silver: 4×100 m freestyle relay and 4×100 m freestyle relay |
| Anne Ottenbrite | CAN |
SWM | Olympics | 1984 | 0–1–1 1982 Guayaquil SWI silver: 100 m breaststroke, bronze: 200 m breaststroke |
| Jeanette Ottesen Gray | DEN |
SWM | Olympics | 2004—2020 | 2–2–0 2011 Shanghai SWI gold: 100 m freestyle; 2013 Barcelona SWI gold: 50 m butterfly; 2015 Kazan SWI silver: 50 m butterfly and 100 m butterfly |
| Frank Otto | GERFRG |
WPO | Olympics | 1984—1992 | 0–0–1 1982 Guayaquil WAP bronze (competed for West Germany) |
| Kristin Otto | GDR |
SWM | Olympics | 1988 | 7–2–0 1982 Guayaquil SWI gold: 100 m backstroke, 4×100 m freestyle relay, and 4×100 m medley relay; 1986 Madrid SWI gold: 100 m freestyle, 200 m medley, 4×100 m freestyle relay, and 4×100 m medley relay, silver: 50 m freestyle and 100 m butterfly |
| Yelena Ovchinnikova | RUS |
SWA | Olympics | 2008 | 7–0–0 2001 Fukuoka SYN gold: team; 2003 Barcelona SYN gold: team; 2005 Montréal SYN gold: team and team Free Routine Combination; 2007 Melbourne SYN gold: team Technical, team Free, and team Free Routine Combination |
| Emily Overholt | CAN |
SWM | Olympics | 2016 | 0–0–2 2015 Kazan SWI bronze: 400 m medley; 2019 Gwangju SWI bronze: 4×200 m freestyle relay |
| Elli Overton | AUS |
SWM | Olympics | 1992—2000 | 0–0–1 1994 Roma SWI bronze: 200 m medley |
| Rommel Pacheco | MEX |
DIV | Olympics / Opening Flagbearer | 2004—2020 | 0–2–1 2013 Barcelona DIV bronze: synchronized springboard; 2017 Budapest DIV silver: team; 2019 Gwangju DIV silver: 1 m springboard |
| Jake Packard | AUS |
SWM | Olympics | 2016 | 0–1–0 2015 Kazan SWI silver: 4×100 m medley relay |
| Yuliya Pakhalina | RUS |
DIV | Olympics | 2000—2008 | 3–3–3 1998 Perth DIV gold: 3 m springboard and synchronized springboard; 2001 Fukuoka DIV silver: synchronized springboard, bronze: 3 m springboard; 2003 Barcelona DIV silver: 3 m springboard and synchronized springboard; 2007 Melbourne DIV bronze: 1 m springboard; 2009 Roma DIV gold: 1 m springboard, bronze: synchronized springboard |
| Daniil Pakhomov | RUS |
SWM | Olympics | 2016 | 0–0–1 2017 Budapest SWI bronze: 4×100 m medley relay (swam in heats only) |
| Kirk Palmer | AUS |
SWM | Olympics | 2008 | 0–0–1 2009 Roma SWI bronze: 4×200 m freestyle relay (swam in heats only) |
| Kylie Palmer | AUS |
SWM | Olympics | 2008—2012 | 0–3–0 2011 Shanghai SWI silver: 200 m freestyle and 4×200 m freestyle relay; 2013 Barcelona SWI silver: 4×200 m freestyle relay |
| Paul Palmer | GBR |
SWM | Olympics | 1992—2000 | 0–0–2 1998 Perth SWI bronze: 400 m freestyle and 4×200 m freestyle relay |
| Gregorio Paltrinieri | ITA |
OWS/SWM | Olympics / Closing Flagbearer | 2012—2024 | 3–2–3 2013 Barcelona SWI bronze: 1500 m freestyle; 2015 Kazan SWI gold: 1500 m freestyle, silver: 800 m freestyle; 2017 Budapest SWI gold: 1500 m freestyle, bronze: 800 m freestyle; 2019 Gwangju SWI gold: 800 m freestyle, silver: 4×1.25 km open water relay, bronze: 1500 m freestyle |
| Aleksey Panfili |  KAZRUS |
WPO | Olympics | 1996—2012 | 0–0–1 2001 Fukuoka WAP bronze (competed for Russia) |
| Pang Jiaying | CHN |
SWM | Olympics | 2004—2012 | 1–0–3 2003 Barcelona SWI bronze: 4×200 m freestyle relay; 2005 Montréal SWI bronze: 4×200 m freestyle relay; 2009 Roma SWI gold: 4×200 m freestyle relay; 2011 Shanghai SWI bronze: 4×200 m freestyle relay |
| Roberto Pangaro | ITA |
SWM | Olympics | 1972—1976 | 0–0–1 1975 Cali SWI bronze: 4×100 m freestyle relay |
| Nikolay Pankin | RUSURS |
SWM | Olympics | 1968—1976 | 0–0–1 1975 Cali SWI bronze: 200 m breaststroke |
| Denis Pankratov | RUSEUN |
SWM | Olympics | 1992—2000 | 1–2–0 1994 Roma SWI gold: 200 m butterfly; silver: 4×200 m freestyle relay and 4×100 m medley relay (competed for Russia) |
| Yekaterina Pantyulina-Lisunova | RUS |
WPO | Olympics | 2008—2016 | 0–0–3 2007 Melbourne WAP bronze (competed as Yekaterina Pantyulina); 2009 Roma WAP bronze (competed as Yekaterina Pantyulina); 2011 Shanghai WAP bronze (competed as Yekaterina Lisunova) |
| Jenny Pareja | ESP |
WPO | Olympics | 2012 | 1–0–0 2013 Barcelona WAP gold |
| Eddie Parenti | CAN |
SWM | Olympics | 1992—1996 | 0–0–0 1991 Perth silver: 4×50 m freestyle relay (demonstration event) |
| Park Tae-Hwan |  KOR |
SWM | Olympics | 2004—2016 | 2–0–1 2007 Melbourne SWI gold: 400 m freestyle, bronze: 200 m freestyle; 2011 Shanghai SWI gold: 400 m freestyle |
| David Parker | GBR |
SWM | Olympics | 1976 | 0–0–1 1975 Cali SWI bronze: 1500 m freestyle |
| Georgina Parkes | AUS |
SWM | Olympics | 1980—1984 | 0–1–0 1982 Guayaquil SWI silver: 200 m backstroke |
| Vjekoslav Pasković |  MNE |
WPO | Olympics | 2008—2016 | 0–1–0 2013 Barcelona WAP silver |
| Tomislav Paškvalin | CRO YUG |
WPO | Olympics | 1984—1988 | 1–0–0 1986 Madrid WAP gold |
| Giacomo Pastorino | ITA |
WPO | Olympics | 2012 | 1–0–0 2011 Shanghai WAP gold |
| Aleksandra Patskevich | ROCRUS |
SWA | Olympics | 2012—2020 | 13–0–0 2009 Roma SYN gold: team Technical and team Free; 2011 Shanghai SYN gold: team Technical, team Free, and team Free Routine Combination; 2013 Barcelona SYN gold: team Technical, team Free, and team Free Routine Combination; 2015 Kazan SYN gold: team Technical, team Free, and team Free Routine Combination; 2017 Budapest SYN gold: duet Technical and duet Free |
| Cassie Patten | GBR |
OWS/SWM | Olympics | 2008 | 0–1–0 2007 Melbourne SWI silver: 10 km open water |
| Josip Pavić | CRO |
WPO | Olympics / Opening Flagbearer | 2008—2016 | 1–1–3 2007 Melbourne WAP gold; 2009 Roma WAP bronze; 2011 Shanghai WAP bronze; 2013 Barcelona WAP bronze; 2015 Kazan WAP silver |
| Jordi Payá | ESP |
WPO | Olympics | 1988—1996 | 0–1–0 1994 Roma WAP silver |
| Keri-Anne Payne | GBR |
OWS/SWM | Olympics | 2008—2016 | 2–0–0 2009 Roma SWI gold: 10 km open water; 2011 Shanghai SWI gold: 10 km open water |
| Nicolle Payne | USA |
WPO | Olympics / Non-starter | 2000—2004 | 1–0–0 2003 Barcelona WAP gold |
| Todd Pearson | AUS |
SWM | Olympics | 2000—2004 | 2–0–0 2001 Fukuoka SWI gold: 4×100 m freestyle relay and 4×200 m freestyle relay (swam in heats only) |
| Adam Peaty | GBR |
SWM | Olympics | 2016—2024 | 8–1–1 2015 Kazan SWI gold: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley mixed relay; 2017 Budapest SWI gold: 50 m breaststroke and 100 m breaststroke, silver: 4×100 m medley relay; 2019 Gwangju SWI gold: 50 m breaststroke, 100 m breaststroke, and 4×100 m medley relay, bronze: 4×100 m medley mixed relay |
| Jacob Pebley | USA |
SWM | Olympics | 2016 | 0–0–1 2017 Budapest SWI bronze: 200 m backstroke |
| Jana Pechanová |  CZE |
OWS/SWM | Olympics | 2004—2016 | 0–1–0 2003 Barcelona SWI silver: 5 km open water |
| Rikke Møller Pedersen | DEN |
SWM | Olympics | 2012—2016 | 0–1–1 2013 Barcelona SWI silver: 200 m breaststroke; 2015 Kazan SWI bronze: 200 m breaststroke |
| Sergio Pedrerol | ESP |
WPO | Olympics | 1992—2004 | 2–1–0 1994 Roma WAP silver; 1998 Perth WAP gold; 2001 Fukuoka WAP gold |
| Aaron Peirsol | USA |
SWM | Olympics | 2000—2008 | 10–2–0 2001 Fukuoka SWI gold: 200 m backstroke; 2003 Barcelona SWI gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay; silver: 4×200 m freestyle relay; 2005 Montréal SWI gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay; 2007 Melbourne SWI gold: 100 m backstroke, silver: 200 m backstroke; 2009 Roma SWI gold: 200 m backstroke and 4×100 m medley relay |
| Anikó Pelle | HUNITA |
WPO | Olympics | 2004—2012 | 1–1–0 2001 Fukuoka WAP silver (competed for Hungary); 2005 Montréal WAP gold (competed for Hungary) |
| Federica Pellegrini | ITA |
SWM | Olympics / Administrator / Opening Flagbearer | 2004—2021 | 6–4–1 2005 Montréal SWI silver: 200 m freestyle; 2007 Melbourne SWI bronze: 200 m freestyle; 2009 Roma SWI gold: 200 m freestyle and 400 m freestyle; 2011 Shanghai SWI gold: 200 m freestyle and 400 m freestyle; 2013 Barcelona SWI silver: 200 m freestyle; 2015 Kazan SWI silver: 200 m freestyle and 4×200 m freestyle relay; 2017 Budapest SWI gold: 200 m freestyle; 2019 Gwangju SWI gold: 200 m freestyle |
| Annie Pelletier | CAN |
DIV | Olympics | 1996 | 0–0–1 1994 Roma DIV bronze: 1 m springboard |
| Matteo Pelliciari | ITA |
SWM | Olympics | 2000—2004 | 0–1–0 2001 Fukuoka SWI silver: 4×200 m freestyle relay |
| Pili Peña | ESP |
WPO | Olympics | 2012—2024 | 1–2–0 2013 Barcelona WAP gold; 2017 Budapest WAP silver; 2019 Gwangju WAP silver |
| Peng Bo | CHN |
DIV | Olympics | 2004 | 1–1–0 2001 Fukuoka DIV gold: synchronized springboard; 2003 Barcelona DIV silver: 3 m springboard |
| Jill Penner | USA |
SWA | Olympics | 2008 | 0–0–1 2007 Melbourne SYN bronze: team Free Routine Combination |
| Thiago Pereira | BRA |
SWM | Olympics | 2004—2016 | 0–1–2 2013 Barcelona SWI bronze: 200 m medley and 400 m medley; 2015 Kazan SWI silver: 200 m medley |
| Giacomo Perez-Dortona | FRA |
SWM | Olympics | 2012 | 1–0–1 2013 Barcelona SWI gold: 4×100 m medley relay; 2015 Kazan SWI bronze: 4×100 m medley relay |
| Amaurys Perez | ITA |
WPO | Olympics | 2012 | 1–0–0 2011 Shanghai WAP gold |
| Iván Pérez |  CUBESP |
WPO | Olympics | 1992—2012 | 2–1–1 1998 Perth WAP gold (competed for Spain); 2001 Fukuoka WAP gold (competed for Spain); 2007 Melbourne WAP bronze (competed for Spain); 2009 Roma WAP silver (competed for Spain) |
| Kieren Perkins | AUS |
SWM | Olympics / Closing Flagbearer | 1992—2000 | 2–1–0 1991 Perth SWI silver: 1500 m freestyle; 1994 Roma SWI gold: 400 m freestyle and 1500 m freestyle |
| Felipe Perrone | BRAESP |
WPO | Olympics | 2008—2024 | 0–2–1 2007 Melbourne WAP bronze (competed for Spain); 2009 Roma WAP silver (competed for Spain); 2019 Gwangju WAP silver (competed for Spain) |
| Kiko Perrone | ESP |
WPO | Olympics | 2008 | 0–0–1 2007 Melbourne WAP bronze |
| Mariangela Perrupato | ITA |
SWA | Olympics | 2012—2016 | 0–1–1 2015 Kazan SYN bronze: duet Free (mixed); 2017 Budapest SYN silver: duet Free (mixed) |
| Imre Péter | HUN |
WPO | Olympics | 1992 | 0–0–1 1991 Perth WAP bronze |
| Stefan Peter | FRG |
SWM | Olympics | 1984 | 0–0–1 1982 Guayaquil SWI bronze: 4×100 m medley relay |
| Antonio Petković | CRO |
WPO | Olympics | 2016 | 0–1–0 2015 Kazan WAP silver |
| Zsolt Petőváry | HUN |
WPO | Olympics | 1988—1992 | 0–0–1 1991 Perth WAP bronze |
| Heather Petri | USA |
WPO | Olympics | 2000—2012 | 3–1–0 2003 Barcelona WAP gold; 2005 Montréal WAP silver; 2007 Melbourne WAP gold; 2009 Roma WAP gold |
| Borut Petrič |  SLOYUG |
SWM | Olympics | 1976—1984 | 0–1–0 1978 West Berlin SWI silver: 1500 m freestyle |
| Darjan Petrič | SLOYUG |
SWM | Olympics | 1980—1988 | 0–0–1 1982 Guayaquil SWI bronze: 1500 m freestyle |
| Tatyana Petrova | RUS |
WPO | Olympics | 2000—2004 | 0–0–1 2003 Barcelona WAP bronze |
| Antonio Petrović | MNE |
WPO | Olympics | 2012—2016 | 0–1–0 2013 Barcelona WAP silver |
| Zoran Petrović | SRBYUG |
WPO | Olympics | 1984 | 1–0–0 1986 Madrid WAP gold |
| Kim Peyton | USA |
SWM | Olympics | 1972—1976 | 0–1–0 1973 Belgrade SWI silver: 4×100 m freestyle relay |
| Stefan Pfeiffer | GERFRG |
SWM | Olympics | 1984—1992 | 1–2–1 1986 Madrid SWI silver: 4×200 m freestyle relay (swam in heats only) (competed for West Germany); 1991 Perth SWI gold: 4×200 m freestyle relay, silver: 400 m freestyle, bronze: 1500 m freestyle (competed for Germany) |
| Frank Pfütze | GDR |
SWM | Olympics | 1976—1980 | 0–0–1 1975 Cali SWI bronze: 400 m freestyle |
| Michael Phelps | USA |
SWM | Olympics / Opening Flagbearer | 2000—2016 | 26–6–1 2001 Fukuoka SWI gold: 200 m butterfly; 2003 Barcelona SWI gold: 200 m butterfly, 200 m medley, 400 m medley, and 4×100 m medley relay (swam in heats only), silver: 100 m butterfly and 4×200 m freestyle relay; 2005 Montréal SWI gold: 200 m freestyle, 200 m medley, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay (swam in heats only), silver: 100 m butterfly; 2007 Melbourne SWI gold: 200 m freestyle, gold: 100 m butterfly, 200 m butterfly, 200 m medley, 400 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay; 2009 Roma SWI gold: 100 m butterfly, 200 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay, silver: 200 m freestyle; 2011 Shanghai SWI gold: 100 m butterfly, 200 m butterfly, 4×200 m freestyle relay, and 4×100 m medley relay, silver: 200 m freestyle and 200 m medley, bronze: 4×100 m freestyle relay |
| Erin Phenix | USA |
SWM | Olympics | 2000 | 0–2–0 2001 Fukuoka SWI silver: 4×100 m freestyle relay and 4×100 m medley relay |
| Brian Phillips | CAN |
SWM | Olympics | 1972 | 0–0–1 1973 Belgrade SWI bronze: 4×100 m medley relay |
| Karen Pickering | GBR |
SWM | Olympics | 1992—2004 | 1–1–0 2001 Fukuoka SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay |
| Sydney Pickrem | CAN |
SWM | Olympics | 2016—2024 | 0–0–4 2017 Budapest SWI bronze: 400 m medley; 2019 Gwangju SWI bronze: 200 m breaststroke, 200 m medley, and 4×100 m medley relay |
| Josep Picó | ESP |
WPO | Olympics | 1992 | 0–2–0 1991 Perth WAP silver; 1994 Roma WAP silver |
| Blake Pieroni | USA |
SWM | Olympics | 2016—2024 | 4–0–2 2017 Budapest SWI gold: 4×100 m freestyle relay and 4×100 m freestyle mixed relay (swam in heats only), bronze: 4×200 m freestyle relay; 2019 Gwangju SWI gold: 4×100 m freestyle relay and 4×100 m freestyle mixed relay (swam in heats only), bronze: 4×200 m freestyle relay |
| Annamay Pierse | CAN |
SWM | Olympics | 2008 | 0–1–0 2009 Roma SWI silver: 200 m breaststroke |
| Duško Pijetlović | SRB |
WPO | Olympics | 2008—2020 | 2–1–1 2009 Roma WAP gold; 2011 Shanghai WAP silver; 2015 Kazan WAP gold; 2017 Budapest WAP bronze |
| Gojko Pijetlović | SRB |
WPO | Olympics | 2012—2020 | 2–1–1 2009 Roma WAP gold; 2011 Shanghai WAP silver; 2015 Kazan WAP gold; 2017 Budapest WAP bronze |
| Denis Pimankov | RUS |
SWM | Olympics | 1996—2004 | 1–1–1 1998 Perth SWI bronze: 4×100 m freestyle relay; 2003 Barcelona SWI gold: 4×100 m freestyle relay, silver: 4×100 m medley relay (swam in heats only) |
| Adam Pine | AUS |
SWM | Olympics | 2000—2008 | 2–1–0 1998 Perth SWI silver: 4×100 m freestyle relay; 2001 Fukuoka SWI gold: 4×100 m freestyle relay (swam in heats only) and 4×100 m medley relay (swam in heats only) |
| Svilen Piralkov | ESP |
WPO | Olympics | 2008 | 0–0–1 2007 Melbourne WAP bronze |
| Andrea Pisano | ITA |
WPO | Olympics | 1984—1988 | 0–1–0 1986 Madrid WAP silver |
| Fernando Platas | MEX |
DIV | Olympics / Opening Flagbearer / Closing Flagbearer | 1992—2004 | 0–2–0 2001 Fukuoka DIV silver: synchronized springboard and synchronized platform |
| Catherine Plewinski | FRA |
SWM | Olympics | 1988—1992 | 0–2–1 1991 Perth SWI silver: 50 m freestyle and 100 m freestyle, bronze: 100 m butterfly |
| Karla Plugge | NED |
WPO | Olympics | 2000 | 1–2–0 1991 WAP Perth gold (competed as Karla van der Boon); 1994 Roma WAP silver (competed as Karla van der Boon); 1998 Perth WAP silver (competed as Karla van der Boon) |
| David Plummer | USA |
SWM | Olympics | 2016 | 1–1–0 2011 Shanghai SWI gold: 4×100 m medley relay (swam in heats only); 2013 Barcelona SWI silver: 100 m backstroke |
| Maxim Podoprigora |  AUT |
SWM | Olympics | 2000—2008 | 0–1–0 2001 Fukuoka SWI silver: 200 m breaststroke |
| Sarah Poewe | GERRSA |
SWM | Olympics | 2000—2012 | 0–0–2 2005 Montréal SWI bronze: 4×100 m medley relay (competed for Germany); 2009 Roma SWI bronze: 4×100 m medley relay (competed for Germany) |
| Anne Poleska | GER |
SWM | Olympics | 2000—2008 | 0–1–0 2005 Montréal SWI silver: 200 m breaststroke |
| Damir Polić | CROYUG |
WPO | Olympics | 1976—1980 | 0–0–1 1978 West Berlin WAP bronze |
| Mikhail Polishchuk | RUS |
SWM | Olympics | 2008—2012 | 0–1–0 2009 Roma SWI silver: 4×200 m freestyle relay |
| Claudia Poll |  CRC |
SWM | Olympics | 1996—2004 | 1–1–2 1994 Roma SWI bronze: 200 m freestyle and 400 m freestyle; 1998 Perth SWI gold: 200 m freestyle; 2001 Fukuoka SWI silver: 400 m freestyle |
| Sylvia Poll | CRC |
SWM | Olympics | 1988—1992 | 0–0–0 1991 Perth silver: 50 m backstroke (demonstration event) |
| Andrea Pollack | GDR |
SWM | Olympics | 1976—1980 | 0–2–1 1978 West Berlin SWI silver: 100 m butterfly and silver: 4×100 m medley relay, bronze: 200 m butterfly |
| Anatoly Polyakov | RUS |
SWM | Olympics | 2000—2004 | 0–0–1 2001 Fukuoka SWI bronze: 200 m butterfly |
| Igor Polyansky | RUSURS |
SWM | Olympics | 1988 | 2–0–1 1986 Madrid SWI gold: 100 m backstroke and 200 m backstroke, bronze: 4×100 m medley relay |
