Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Marianne Limpert | SWM | Olympics | 1992—2000 | 1–1–1 1995 Rio de Janeiro gold: 4×200 m freestyle relay; 2000 Athina silver: 100 m medley, bronze: 200 m medley | |
| Oleh Lisohor | SWM | Olympics | 2000—2008 | 5–0–3 2000 Athina bronze: 50 m breaststroke; 2002 Moskva gold: 50 m breaststroke and 100 m breaststroke; 2006 Shanghai gold: 50 m breaststroke and 100 m breaststroke, bronze: 4×100 m medley relay; 2008 Manchester gold: 50 m breaststroke; 2008 Manchester bronze: 100 m breaststroke | |
| Max Litchfield | SWM | Olympics | 2016—2024 | 0–1–0 2016 Windsor silver: 400 m medley | |
| Liu Jing | SWM | Olympics | 2008—2012 | 1–0–0 2010 Dubai gold: 4×200 m freestyle relay | |
| Liu Limin | SWM | Olympics | 1996—2000 | 5–2–0 1993 Palma de Mallorca gold: 200 m butterfly and 4×100 m medley relay, silver: 100 m butterfly; 1995 Rio de Janeiro gold: 100 m butterfly, silver: 200 m butterfly; 1997 Göteborg gold: 200 m butterfly and 4×100 m medley relay (swam in heats only) | |
| Liu Zige | SWM | Olympics | 2008—2012 | 2–1–0 2008 Manchester gold: 4×100 m medley relay; 2010 Dubai gold: 4×100 m medley relay; 2012 İstanbul silver: 100 m butterfly | |
| Nicole Livingstone-Stevenson | SWM | Olympics | 1988—1996 | 0–0–1 1995 Rio de Janeiro bronze: 4×200 m freestyle relay (competed as Nicole Stevenson) | |
| Nikita Lobintsev | SWM | Olympics | 2008—2016 | 3–3–1 2010 Dubai gold: 4×200 m freestyle relay, silver: 400 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay, bronze: 100 m freestyle; 2016 Windsor gold: 4×50 m freestyle relay and 4×100 m freestyle relay | |
| Artyom Lobuzov | SWM | Olympics | 2012 | 1–0–1 2014 Doha bronze: 4×200 m freestyle relay; 2016 Windsor gold: 4×200 m freestyle relay | |
| Ryan Lochte | SWM | Olympics | 2004—2016 | 21–10–7 2004 Indianapolis gold: 4×200 m freestyle relay, silver: 200 m medley, bronze: 200 m freestyle; 2006 Shanghai gold: 200 m backstroke, 200 m medley, and 400 m medley; 2008 Manchester silver: 4×100 m medley relay; 2006 Shanghai bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 2008 Manchester gold: 100 m medley, 200 m medley, 400 m medley, and 4×100 m freestyle relay, silver: 200 m backstroke and 4×100 m medley relay; 2010 Dubai gold: 200 m freestyle, 200 m backstroke, 100 m medley, 200 m medley, 400 m medley, and 4×100 m medley relay, silver: 4×200 m freestyle relay; 2012 İstanbul gold: 200 m freestyle, 100 m medley, 200 m medley, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay, silver: 200 m backstroke, bronze: 100 m butterfly; 2014 Doha gold: 4×200 m freestyle relay, silver: 200 m backstroke, 200 m medley, 4×50 m freestyle relay, and 4×100 m medley relay, bronze: 200 m freestyle, 100 m medley, and 4×100 m freestyle relay | |
| Scott Logan | SWM | Olympics | 1996 | 0–0–1 1997 Göteborg bronze: 4×100 m freestyle relay | |
| Sergio López | SWM | Olympics | 1988—1992 | 0–1–0 1993 Palma de Mallorca silver: 4×100 m medley relay | |
| Stanislav Lopukhov | SWM | Olympics | 1996 | 0–2–1 1995 Rio de Janeiro bronze: 100 m breaststroke; 1997 Göteborg silver: 100 m breaststroke and 4×100 m medley relay | |
| Jemma Lowe | SWM | Olympics | 2008—2012 | 0–1–3 2008 Manchester bronze: 100 m butterfly; 2010 Dubai silver: 200 m butterfly; 2012 İstanbul bronze: 100 m butterfly and 200 m butterfly | |
| Lu Bin | SWM | Olympics | 1992 | 2–0–1 1993 Palma de Mallorca gold: 4×100 m freestyle relay and 4×200 m freestyle relay, bronze: 200 m freestyle | |
| Lu Donghua | SWM | Olympics | 2000 | 2–0–0 1997 Göteborg gold: 100 m backstroke and 4×100 m medley relay | |
| Lu Ying | SWM | Olympics | 2012—2016 | 1–1–0 2012 İstanbul gold: 50 m butterfly; 2014 Doha silver: 100 m butterfly | |
| Adam Lucas | SWM | Olympics | 2004 | 0–1–0 2004 Indianapolis silver: 4×200 m freestyle relay (swam in heats only) | |
| João de Lucca | SWM | Olympics | 2016 | 1–0–1 2014 Doha gold: 4×50 m medley relay (swam in heats only), bronze: 4×50 m freestyle mixed relay | |
| Alexander Lüderitz | SWM | Olympics | 1996 | 1–0–0 1997 Göteborg gold: 4×100 m freestyle relay | |
| Luiz Altamir | SWM | Olympics / YOG | 2014—2020 | 1–0–0 2018 Hangzhou gold: 4×200 m freestyle relay | |
| Luo Nan | SWM | Olympics | 2008 | 0–0–2 2006 Shanghai bronze: 200 m breaststroke and 4×100 m medley relay | |
| Luo Xuejuan | SWM | Olympics | 2000—2004 | 0–1–2 2002 Moskva silver: 50 m breaststroke, bronze: 100 m breaststroke and 4×100 m medley relay | |
| Yannick Lupien | SWM | Olympics | 2000—2004 | 0–0–1 1999 Hong Kong bronze: 4×200 m freestyle relay | |
| Annika Lurz | SWM | Olympics | 2008 | 0–0–1 2006 Shanghai bronze: 200 m freestyle (competed as Annika Liebs) | |
| Remo Lütolf | SWM | Olympics | 2000—2004 | 0–0–1 1999 Hong Kong bronze: 50 m breaststroke | |
| Anders Lyrbring | SWM | Olympics | 1996 | 0–1–0 1997 Göteborg silver: 4×200 m freestyle relay | |
| Marcos Macedo | SWM | Olympics | 2016 | 1–0–0 2014 Doha gold: 4×100 m medley relay | |
| Lise Mackie | SWM | Olympics | 1992—1996 | 0–0–1 1997 Göteborg bronze: 4×200 m freestyle relay | |
| Richard Maden | SWM | Olympics | 1996 | 0–0–1 1997 Göteborg bronze: 4×100 m medley relay | |
| Stefaan Maene | SWM | Olympics | 1992 | 0–0–1 1993 Palma de Mallorca bronze: 200 m backstroke | |
| Filippo Magnini | SWM | Olympics | 2004—2016 | 2–5–2 2006 Shanghai gold: 4×100 m freestyle relay and 4×200 m freestyle relay, silver: 100 m freestyle and 200 m freestyle; 2008 Manchester silver: 100 m freestyle, bronze: 4×200 m freestyle relay; 2014 Doha silver: 4×100 m freestyle relay and 4×200 m freestyle relay, bronze: 4×50 m freestyle relay | |
| Christine Magnuson | SWM | Olympics | 2008 | 0–1–1 2010 Dubai silver: 4×100 m medley relay (swam in heats only); 2012 İstanbul bronze: 4×100 m medley relay (swam in heats only) | |
| Travis Mahoney | SWM | Olympics | 2016 | 0–1–1 2012 İstanbul silver: 4×200 m freestyle relay (swam in heats only); 2014 Doha bronze: 4×100 m freestyle relay | |
| Sandrine Mainville | SWM | Olympics | 2016 | 1–0–1 2016 Windsor gold: 4×50 m freestyle relay, bronze: 4×50 m freestyle mixed relay | |
| Joanne Malar | SWM | Olympics | 1992—2000 | 2–1–2 1995 Rio de Janeiro gold: 400 m medley and 4×200 m freestyle relay; 1997 Göteborg bronze: 400 m medley; 1999 Hong Kong silver: 400 m medley, bronze: 400 m freestyle | |
| Marcin Maliński | SWM | Olympics | 1992—1996 | 0–0–2 1995 Rio de Janeiro bronze: 200 m medley and 400 m medley | |
| Florent Manaudou | SWM | Olympics / Athlete Oath Taker / Opening Flagbearer | 2012—2024 | 4–3–2 2012 İstanbul silver: 50 m freestyle, bronze: 50 m breaststroke; 2014 Doha gold: 50 m freestyle, 50 m backstroke, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 100 m freestyle and 4×50 m medley relay, bronze: 4×100 m medley relay | |
| Peter Mankoč | SWM | Olympics | 1996—2012 | 3–3–1 2002 Moskva gold: 100 m medley, silver: 200 m medley; 2004 Indianapolis gold: 100 m medley, bronze: 100 m butterfly; 2006 Shanghai silver: 100 m medley; 2008 Manchester gold: 100 m butterfly, silver: 100 m medley | |
| Daiene Marçal | SWM | Olympics | 2016 | 0–0–1 2018 Hangzhou bronze: 100 m butterfly | |
| Igor Marchenko | SWM | Olympics | 2000—2004 | 0–0–2 2002 Moskva bronze: 100 m butterfly and 4×100 m medley relay | |
| Alessandra Marchioro | SWM | YOG | 2010 | 0–0–1 2014 Doha bronze: 4×50 m freestyle mixed relay (swam in heats only) | |
| Melanie Margalis | SWM | Olympics | 2016 | 1–3–1 2014 Doha bronze: 200 m medley; 2018 Hangzhou gold: 4×100 m medley relay (swam in heats only), silver: 200 m medley, 400 m medley, and 4×200 m freestyle relay | |
| Luca Marin | SWM | Olympics | 2004—2016 | 0–1–0 2006 Shanghai silver: 400 m medley | |
| Serghei Mariniuc | SWM | Olympics | 1992—2000 | 0–1–0 1993 Palma de Mallorca silver: 400 m medley (competed for Moldova) | |
| Melanie Marshall | SWM | Olympics | 2004—2008 | 0–1–1 2008 Manchester silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay | |
| Angel Martino | SWM | Olympics | 1992—1996 | 1–2–2 1993 Palma de Mallorca gold: 100 m backstroke, silver: 50 m freestyle and 100 m freestyle, bronze: 4×100 m freestyle relay and 4×100 m medley relay | |
| Henrique Martins | SWM | Olympics | 2016 | 3–0–1 2014 Doha gold: 4×50 m medley relay (swam in heats only), 4×100 m medley relay (swam in heats only), and 4×50 m medley mixed relay (swam in heats only), bronze: 4×50 m freestyle mixed relay (swam in heats only) | |
| Kylie Masse | SWM | Olympics | 2016—2024 | 0–2–0 2016 Windsor silver: 100 m backstroke and 4×100 m medley relay | |
| Alexandre Massura | SWM | Olympics | 1996—2000 | 1–0–0 1995 Rio de Janeiro gold: 4×100 m freestyle relay | |
| Ida Mattsson-Marko-Varga | SWM | Olympics | 2004—2016 | 0–1–2 2004 Indianapolis silver: 4×100 m freestyle relay (swam in heats only), bronze: 4×200 m freestyle relay (competed as Ida Mattsson); 2006 Shanghai bronze: 4×100 m freestyle relay (competed as Ida Mattsson) | |
| Caitlin McClatchey | SWM | Olympics | 2004—2012 | 0–1–2 2008 Manchester silver: 4×200 m freestyle relay, bronze: 200 m freestyle and 4×100 m freestyle relay | |
| Tyler McGill | SWM | Olympics | 2012 | 1–0–0 2010 Dubai gold: 4×100 m medley relay (swam in heats only) | |
| Emma McKeon | SWM | Olympics / YOG | 2010—2024 | 0–0–1 2010 Dubai bronze: 4×100 m medley relay (swam in heats only) | |
| Hannah McLean | SWM | Olympics | 2004 | 0–0–1 2006 Shanghai bronze: 200 m backstroke | |
| Matt McLean | SWM | Olympics | 2012 | 1–0–0 2012 İstanbul gold: 4×200 m freestyle relay | |
| Gavin Meadows | SWM | Olympics | 2004 | 0–2–1 1997 Göteborg bronze: 4×200 m freestyle relay (swam in heats only); 1999 Hong Kong silver: 4×200 m freestyle relay; 2000 Athina silver: 4×200 m freestyle relay (swam in heats only) | |
| Etiene Medeiros | SWM | Olympics | 2016—2020 | 3–1–2 2014 Doha gold: 50 m backstroke and 4×50 m medley mixed relay, bronze: 4×50 m freestyle mixed relay; 2016 Windsor gold: 50 m backstroke, silver: 4×50 m medley mixed relay; 2018 Hangzhou bronze: 50 m freestyle | |
| Blaž Medvešek | SWM | Olympics | 2000—2004 | 0–0–1 2002 Moskva bronze: 200 m backstroke | |
| Maud van der Meer | SWM | Olympics | 2016 | 2–1–1 2014 Doha gold: 4×50 m freestyle relay and 4×100 m freestyle relay; 2016 Windsor silver: 4×50 m freestyle relay (swam in heats only), bronze: 4×100 m freestyle relay | |
| Helge Meeuw | SWM | Olympics | 2004—2012 | 0–0–2 2006 Shanghai bronze: 50 m backstroke and 100 m backstroke | |
| Katie Meili | SWM | Olympics | 2016 | 3–1–0 2018 Hangzhou gold: 4×50 m medley relay, 4×100 m medley relay, and 4×50 m medley mixed relay (swam in heats only), silver: 100 m breaststroke | |
| Rūta Meilutytė | SWM | Olympics / YOG | 2012—2024 | 3–3–0 2012 İstanbul gold: 50 m breaststroke and 100 m breaststroke, silver: 100 m medley; 2014 Doha gold: 50 m breaststroke, silver: 100 m breaststroke; 2018 Hangzhou silver: 50 m breaststroke | |
| Katrin Meißner | SWM | Olympics | 1988—2000 | 0–3–0 1997 Göteborg silver: 4×100 m freestyle relay (competed for Germany); 2000 Athina silver: 4×100 m freestyle relay and 4×100 m medley relay (competed for Germany) | |
| Oussama Mellouli | OWS/SWM | Olympics / Opening Flagbearer / Closing Flagbearer | 2000—2020 | 2–2–3 2004 Indianapolis gold: 400 m medley, bronze: 200 m medley; 2010 Dubai gold: 1500 m freestyle, silver: 400 m medley, bronze: 200 m freestyle and 400 m freestyle; 2014 Doha silver: 1500 m freestyle | |
| José Meolans | SWM | Olympics | 1996—2008 | 1–2–1 1999 Hong Kong silver: 50 m freestyle; 2002 Moskva gold: 50 m freestyle, silver: 100 m freestyle; 2006 Shanghai bronze: 100 m freestyle | |
| Mehdy Metella | SWM | Olympics / YOG | 2010—2020 | 2–2–1 2014 Doha gold: 4×100 m freestyle relay and 4×200 m freestyle relay, silver: 4×50 m medley relay, bronze: 4×100 m medley relay; 2016 Windsor silver: 4×100 m freestyle relay | |
| Darren Mew | SWM | Olympics | 2000—2004 | 0–0–2 1999 Hong Kong bronze: 4×100 m medley relay; 2000 Athina bronze: 4×100 m medley relay | |
| William Meynard | SWM | Olympics | 2016 | 1–0–0 2010 Dubai gold: 4×100 m freestyle relay (swam in heats only) | |
| Clément Mignon | SWM | Olympics | 2016—2020 | 1–2–1 2014 Doha gold: 4×100 m freestyle relay, silver: 4×50 m medley relay (swam in heats only), bronze: 4×100 m medley relay; 2016 Windsor silver: 4×100 m freestyle relay | |
| Hannah Miley | SWM | Olympics | 2008—2016 | 1–1–3 2008 Manchester silver: 400 m medley, bronze: 200 m medley; 2012 İstanbul gold: 400 m medley, bronze: 200 m medley; 2014 Doha bronze: 400 m medley | |
| Cody Miller | SWM | Olympics | 2016 | 1–2–1 2014 Doha silver: 4×100 m medley relay, bronze: 4×50 m medley relay; 2016 Windsor gold: 4×50 m medley mixed relay (swam in heats only), silver: 4×50 m medley relay | |
| Scott Miller | SWM | Olympics | 1996 | 1–3–0 1995 Rio de Janeiro gold: 100 m butterfly, silver: 200 m butterfly, 4×100 m freestyle relay (swam in heats only), and 4×100 m medley relay | |
| Alice Mills | SWM | Olympics | 2004—2008 | 0–1–0 2008 Manchester silver: 4×100 m freestyle relay | |
| Miloš Milošević | SWM | Olympics | 1996—2000 | 1–0–0 1993 Palma de Mallorca gold: 100 m butterfly | |
| Sumika Minamoto | SWM | Olympics | 1996—2000 | 1–0–0 1999 Hong Kong gold: 4×100 m medley relay | |
| Christian Minotti | SWM | Olympics | 2000—2004 | 0–0–1 2002 Moskva bronze: 1500 m freestyle | |
| Mike Mintenko | SWM | Olympics | 2000—2004 | 0–0–1 2004 Indianapolis bronze: 4×100 m freestyle relay | |
| Ryan Mitchell | SWM | Olympics | 1996—2000 | 0–3–0 1995 Rio de Janeiro silver: 200 m breaststroke and 4×100 m medley relay (swam in heats only); 1999 Hong Kong silver: 200 m breaststroke | |
| Alice Mizzau | SWM | Olympics | 2012—2016 | 0–0–1 2014 Doha bronze: 4×100 m freestyle relay (swam in heats only) | |
| Kenrick Monk | SWM | Olympics | 2008—2012 | 2–0–0 2008 Manchester gold: 200 m freestyle and 4×200 m freestyle relay | |
| Martina Moravčíková | SWM | Olympics | 2012—2016 | 7–5–5 1995 Rio de Janeiro silver: 200 m medley, bronze: 200 m freestyle; 1997 Göteborg silver: 200 m medley, bronze: 200 m freestyle; 1999 Hong Kong gold: 200 m freestyle, 100 m medley, and 200 m medley; 2000 Athina gold: 100 m medley, silver: 200 m freestyle and 200 m medley, bronze: 100 m freestyle; 2002 Moskva gold: 100 m butterfly and 100 m medley, silver: 100 m freestyle; 2004 Indianapolis gold: 100 m butterfly, bronze: 100 m medley; 2006 Shanghai bronze: 100 m medley | |
| David Morgan | SWM | Olympics | 2016—2020 | 0–1–3 2016 Windsor silver: 4×100 m medley relay, bronze: 50 m butterfly, 100 m butterfly, and 4×100 m freestyle relay | |
| Vladimir Morozov | SWM | Olympics | 2012—2020 | 9–10–1 2012 İstanbul gold: 50 m freestyle and 100 m freestyle, silver: 4×100 m medley relay; 2014 Doha gold: 4×50 m freestyle relay, silver: 100 m medley, 4×100 m freestyle relay, and 4×50 m freestyle mixed relay; 2016 Windsor gold: 4×50 m freestyle relay, 4×100 m freestyle relay, 4×50 m medley relay, 4×100 m medley relay, and 4×50 m freestyle mixed relay; 2016 Windsor silver: 50 m freestyle and 100 m breaststroke; 2018 Hangzhou gold: 50 m freestyle, silver: 100 m freestyle, 4×50 m freestyle relay, 4×100 m freestyle relay, and 4×100 m medley relay, bronze: 4×50 m freestyle mixed relay | |
| Rafael Mósca | SWM | Olympics | 2004 | 0–0–1 2004 Indianapolis bronze: 4×200 m freestyle relay | |
| Camille Muffat | SWM | Olympics | 2008—2012 | 1–0–1 2010 Dubai gold: 200 m freestyle, bronze: 4×200 m freestyle relay | |
| Yury Mukhin | SWM | Olympics | 1992 | 0–0–2 1993 Palma de Mallorca bronze: 4×100 m freestyle relay (competed for Russia); 1995 Rio de Janeiro bronze: 4×100 m medley relay (competed for Russia) | |
| Darya Mullakayeva | SWM | Olympics / YOG | 2014—2016 | 0–0–1 2016 Windsor bronze: 4×200 m freestyle relay | |
| Ryan Murphy | SWM | Olympics | 2016—2024 | 4–3–1 2012 İstanbul gold: 4×100 m medley relay (swam in heats only), bronze: 200 m backstroke; 2018 Hangzhou gold: 100 m backstroke, 4×100 m medley relay, and 4×50 m medley mixed relay (swam in heats only), silver: 50 m backstroke, 200 m backstroke, and 4×50 m medley relay | |
| Curtis Myden | SWM | Olympics | 1992—2000 | 1–2–1 1993 Palma de Mallorca gold: 400 m medley, bronze: 200 m medley; 1995 Rio de Janeiro silver: 200 m medley and 400 m medley | |
| Katsumi Nakamura | SWM | Olympics | 2016—2020 | 0–0–1 2018 Hangzhou bronze: 4×100 m medley relay | |
| Mai Nakamura | SWM | Olympics | 1996—2000 | 3–1–0 1999 Hong Kong gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay, silver: 50 m backstroke | |
| Reiko Nakamura | SWM | Olympics | 2004—2008 | 0–1–0 2002 Moskva silver: 200 m backstroke | |
| Anita Nall | SWM | Olympics | 1992 | 0–0–1 2000 Athina bronze: 4×100 m medley relay | |
| Rozaliya Nasretdinova | SWM | Olympics / YOG | 2014—2016 | 1–1–2 2014 Doha silver: 4×50 m freestyle mixed relay; 2016 Windsor gold: 4×50 m freestyle mixed relay; 2018 Hangzhou bronze: 4×50 m freestyle mixed relay and 4×50 m medley mixed relay | |
| Lia Neal | SWM | Olympics | 2012—2016 | 4–1–1 2012 İstanbul gold: 4×100 m freestyle relay, bronze: 4×100 m medley relay (swam in heats only); 2018 Hangzhou gold: 4×50 m freestyle relay (swam in heats only), 4×100 m freestyle relay, and 4×100 m medley relay (swam in heats only), silver: 4×200 m freestyle relay (swam in heats only) | |
| Leah Neale | SWM | Olympics | 2016—2020 | 0–0–1 2014 Doha bronze: 4×200 m freestyle relay | |
| Ryk Neethling | SWM | Olympics | 1996—2008 | 3–0–0 2006 Shanghai gold: 100 m freestyle, 200 m freestyle, and 100 m medley | |
| Jade Neilsen | SWM | Olympics | 2012 | 0–1–0 2010 Dubai silver: 4×200 m freestyle relay | |
| Margarita Nesterova | SWM | Olympics | 2012 | 0–1–0 2014 Doha silver: 4×50 m freestyle mixed relay (swam in heats only) | |
| Robin Neumann | SWM | Olympics / YOG | 2014—2016 | 0–0–1 2016 Windsor bronze: 4×100 m freestyle relay (swam in heats only) | |
| Kotuku Ngawati | SWM | Olympics | 2016 | 0–1–0 2010 Dubai silver: 100 m medley | |
| Nian Yun | SWM | Olympics | 1996 | 2–1–0 1997 Göteborg gold: 4×100 m freestyle relay and 4×200 m freestyle relay, silver: 200 m freestyle | |
| Rachel Nicol | SWM | Olympics / YOG | 2010—2016 | 0–1–0 2016 Windsor silver: 4×100 m medley relay | |
| Mie Ø. Nielsen | SWM | Olympics | 2012—2016 | 3–1–3 2012 İstanbul gold: 4×100 m medley relay, silver: 100 m backstroke, bronze: 4×100 m freestyle relay; 2014 Doha gold: 4×50 m medley relay and 4×100 m medley relay, bronze: 4×50 m freestyle relay; 2016 Windsor bronze: 4×50 m medley relay | |
| Moniek Nijhuis | SWM | Olympics | 2012 | 0–0–2 2014 Doha bronze: 50 m breaststroke and 100 m breaststroke | |
| Volodymyr Nikolaichuk | SWM | Olympics | 1996—2004 | 0–0–1 2000 Athina bronze: 200 m backstroke | |
| Malin Nilsson | SWM | Olympics | 1992—1996 | 0–1–0 1997 Göteborg silver: 4×200 m freestyle relay | |
| Justin Norris | SWM | Olympics | 2000—2004 | 0–1–0 2002 Moskva silver: 200 m butterfly | |
| Stefan Nystrand | SWM | Olympics | 2000—2012 | 1–4–4 2000 Athina gold: 4×100 m freestyle relay, silver: 100 m freestyle, bronze: 50 m freestyle; 2002 Moskva silver: 4×100 m freestyle relay; 2004 Indianapolis silver: 50 m freestyle, bronze: 50 m breaststroke; 2006 Shanghai silver: 4×100 m freestyle relay, bronze: 100 m medley; 2008 Manchester bronze: 4×100 m freestyle relay | |
| Johan Nyström | SWM | Olympics | 2000 | 1–0–1 1999 Hong Kong bronze: 4×100 m freestyle relay (swam in heats only); 2000 Athina gold: 4×100 m freestyle relay | |
| Siobhan-Marie O'Connor | SWM | Olympics | 2012—2016 | 0–3–0 2014 Doha silver: 100 m medley, 200 m medley, and 4×50 m medley mixed relay | |
| Susie O'Neill | SWM | Olympics / Administrator | 1992—2005 | 3–7–1 1993 Palma de Mallorca gold: 100 m butterfly, silver: 200 m freestyle, 200 m butterfly, 4×200 m freestyle relay, and 4×100 m medley relay; 1995 Rio de Janeiro gold: 200 m butterfly and 4×100 m medley relay, silver: 200 m freestyle, 100 m butterfly, and 4×100 m freestyle relay, bronze: 4×200 m freestyle relay | |
| Alexander Dale Oen | SWM | Olympics | 2004—2008 | 0–0–1 2006 Shanghai bronze: 100 m breaststroke | |
| Mattias Ohlin | SWM | Olympics | 2000—2004 | 1–2–1 1999 Hong Kong silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay; 2000 Athina gold: 4×100 m freestyle relay; 2002 Moskva silver: 4×100 m freestyle relay | |
| Penny Oleksiak | SWM | Olympics / Closing Flagbearer | 2016—2024 | 2–1–1 2016 Windsor gold: 4×50 m freestyle relay and 4×200 m freestyle relay, silver: 4×100 m medley relay, bronze: 100 m freestyle | |
| Larissa Oliveira | SWM | Olympics | 2016—2020 | 1–1–1 2014 Doha gold: 4×50 m medley mixed relay, bronze: 4×50 m freestyle mixed relay; 2016 Windsor silver: 4×50 m medley mixed relay | |
| Nicolas Oliveira | SWM | Olympics | 2008—2016 | 0–0–2 2010 Dubai bronze: 4×100 m freestyle relay and 4×100 m medley relay (swam in heats only) | |
| Linda Olofsson | SWM | Olympics | 1992—1996 | 0–1–2 1993 Palma de Mallorca silver: 4×100 m freestyle relay, bronze: 50 m freestyle; 1995 Rio de Janeiro bronze: 4×100 m freestyle relay | |
| Jon Olsen | SWM | Olympics | 1992—1996 | 1–1–1 1993 Palma de Mallorca gold: 4×100 m medley relay, silver: 4×100 m freestyle relay, bronze: 100 m freestyle | |
| Arina Opyonysheva | SWM | Olympics | 2016 | 0–0–1 2016 Windsor bronze: 4×200 m freestyle relay | |
| Marco Orsi | SWM | Olympics | 2012—2016 | 0–3–1 2014 Doha silver: 50 m freestyle and 4×100 m freestyle relay, bronze: 4×50 m freestyle relay; 2018 Hangzhou silver: 100 m medley | |
| Sergey Ostapchuk | SWM | Olympics | 1996—2000 | 0–1–1 1997 Göteborg silver: 4×100 m medley relay (swam in heats only); 1999 Hong Kong bronze: 200 m backstroke | |
| Maria Östling | SWM | Olympics | 1996—2004 | 0–0–1 1999 Hong Kong bronze: 4×100 m medley relay | |
| Simone Osygus | SWM | Olympics | 1992—1996 | 0–1–0 1997 Göteborg silver: 4×100 m freestyle relay | |
| Jeanette Ottesen Gray | SWM | Olympics | 2004—2020 | 4–1–7 2010 Dubai bronze: 50 m butterfly; 2012 İstanbul gold: 4×100 m medley relay, bronze: 50 m freestyle, 50 m butterfly, and 4×100 m freestyle relay; 2014 Doha gold: 4×50 m medley relay and 4×100 m medley relay, silver: 50 m butterfly, bronze: 100 m butterfly and 4×50 m freestyle relay; 2016 Windsor gold: 50 m butterfly, bronze: 4×50 m medley relay | |
| Elli Overton | SWM | Olympics | 1992—2000 | 2–3–2 1993 Palma de Mallorca silver: 4×200 m freestyle relay and 4×100 m medley relay, bronze: 100 m backstroke and 200 m medley; 1995 Rio de Janeiro gold: 200 m medley and 4×100 m medley relay, silver: 4×100 m freestyle relay (swam in heats only) | |
| Daniil Pakhomov | SWM | Olympics | 2016 | 2–0–0 2016 Windsor gold: 4×200 m freestyle relay (swam in heats only) and 4×50 m medley relay (swam in heats only) | |
| Kirk Palmer | SWM | Olympics | 2008 | 1–1–0 2008 Manchester gold: 4×200 m freestyle relay, silver: 200 m freestyle | |
| Kylie Palmer | SWM | Olympics | 2008—2012 | 2–3–3 2008 Manchester gold: 200 m freestyle and 400 m freestyle, silver: 800 m freestyle, bronze: 4×200 m freestyle relay; 2010 Dubai silver: 400 m freestyle and 4×200 m freestyle relay, bronze: 200 m freestyle; 2014 Doha bronze: 4×200 m freestyle relay | |
| Paul Palmer | SWM | Olympics | 1992—2000 | 0–3–2 1993 Palma de Mallorca bronze: 400 m freestyle; 1997 Göteborg bronze: 4×200 m freestyle relay; 1999 Hong Kong silver: 4×200 m freestyle relay; 2000 Athina silver: 400 m freestyle and 4×200 m freestyle relay | |
| Gregorio Paltrinieri | OWS/SWM | Olympics / Closing Flagbearer | 2012—2024 | 2–2–0 2012 İstanbul gold: 1500 m freestyle; 2014 Doha gold: 1500 m freestyle; 2016 Windsor silver: 1500 m freestyle; 2018 Hangzhou silver: 1500 m freestyle | |
| Pang Jiaying | SWM | Olympics | 2004—2012 | 1–1–2 2006 Shanghai silver: 4×200 m freestyle relay; 2010 Dubai gold: 4×200 m freestyle relay (swam in heats only), bronze: 4×100 m freestyle relay; 2012 İstanbul bronze: 4×200 m freestyle relay | |
| Denis Pankratov | SWM | Olympics | 1992—2000 | 0–1–0 1997 Göteborg silver: 4×100 m medley relay (competed for Russia) | |
| Margherita Panziera | SWM | Olympics | 2016—2024 | 0–0–1 2018 Hangzhou bronze: 4×100 m medley relay | |
| Park Tae-Hwan | SWM | Olympics | 2004—2016 | 3–2–0 2006 Shanghai silver: 400 m freestyle and 1500 m freestyle; 2016 Windsor gold: 200 m freestyle, 400 m freestyle, and 1500 m freestyle | |
| Terence Parkin | SWM | Olympics | 2000—2004 | 0–2–0 2000 Athina silver: 200 m breaststroke and 400 m medley | |
| Todd Pearson | SWM | Olympics | 2000—2004 | 2–0–0 1999 Hong Kong gold: 4×100 m freestyle relay; 2002 Moskva gold: 4×200 m freestyle relay | |
| Adam Peaty | SWM | Olympics | 2016—2024 | 0–3–0 2014 Doha silver: 50 m breaststroke, 100 m breaststroke, and 4×50 m medley mixed relay | |
| Jacob Pebley | SWM | Olympics | 2016 | 0–3–0 2016 Windsor silver: 200 m backstroke, 4×200 m freestyle relay, and 4×50 m medley relay | |
| Alicja Pęczak | SWM | Olympics | 1992—2000 | 0–3–2 1995 Rio de Janeiro bronze: 200 m breaststroke; 1997 Göteborg silver: 100 m breaststroke, bronze: 200 m breaststroke; 2000 Athina silver: 100 m breaststroke and 200 m breaststroke | |
| Rikke Møller Pedersen | SWM | Olympics | 2012—2016 | 4–0–3 2010 Dubai bronze: 200 m breaststroke; 2012 İstanbul gold: 200 m breaststroke and 4×100 m medley relay, bronze: 100 m breaststroke; 2014 Doha gold: 4×50 m medley relay and 4×100 m medley relay, bronze: 200 m breaststroke | |
| Aaron Peirsol | SWM | Olympics | 2000—2008 | 6–1–1 2002 Moskva gold: 200 m backstroke, 4×100 m freestyle relay (swam in heats only), and 4×100 m medley relay, silver: 100 m backstroke, bronze: 4×200 m freestyle relay (swam in heats only); 2004 Indianapolis gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay | |
| Federica Pellegrini | SWM | Olympics / Administrator / Opening Flagbearer | 2004—2021 | 1–2–5 2006 Shanghai silver: 200 m freestyle, bronze: 400 m freestyle; 2010 Dubai bronze: 400 m freestyle and 4×100 m freestyle relay; 2016 Windsor gold: 200 m freestyle, silver: 4×100 m freestyle relay, bronze: 4×50 m freestyle relay; 2018 Hangzhou bronze: 4×100 m medley relay | |
| Matteo Pelliciari | SWM | Olympics | 2000—2004 | 1–0–0 2006 Shanghai gold: 4×200 m freestyle relay | |
| Thiago Pereira | SWM | Olympics | 2004—2016 | 1–1–2 2004 Indianapolis gold: 200 m medley, silver: 4×100 m freestyle relay, bronze: 100 m medley and 4×200 m freestyle relay | |
| Giacomo Perez-Dortona | SWM | Olympics | 2012 | 0–1–2 2014 Doha silver: 4×50 m medley relay, bronze: 100 m breaststroke and 4×100 m medley relay | |
| Merche Peris | SWM | Olympics | 2008 | 0–0–1 2010 Dubai bronze: 50 m backstroke | |
| Răzvan Petcu | SWM | Olympics | 1996 | 0–0–1 1995 Rio de Janeiro bronze: 4×100 m freestyle relay | |
| Aglaia Pezzato | SWM | Olympics | 2016 | 0–1–2 2014 Doha bronze: 4×100 m freestyle relay; 2016 Windsor silver: 4×100 m freestyle relay, bronze: 4×50 m freestyle relay | |
| Michael Phelps | SWM | Olympics / Opening Flagbearer | 2000—2016 | 1–0–0 2004 Indianapolis gold: 200 m freestyle | |
| Karen Pickering | SWM | Olympics | 1992—2004 | 3–1–2 1993 Palma de Mallorca gold: 200 m freestyle, bronze: 100 m freestyle; 1999 Hong Kong gold: 4×100 m freestyle relay, silver: 4×200 m freestyle relay; 2000 Athina gold: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay | |
| Leiston Pickett | SWM | Olympics | 2012 | 0–1–0 2010 Dubai silver: 50 m breaststroke | |
| Blake Pieroni | SWM | Olympics | 2016—2024 | 3–2–1 2016 Windsor silver: 4×50 m freestyle relay and 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2018 Hangzhou gold: 200 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay (swam in heats only) | |
| Janine Pietsch | SWM | Olympics | 2004 | 2–0–0 2006 Shanghai gold: 50 m backstroke and 100 m backstroke | |
| Shamek Pietucha | SWM | Olympics | 2000 | 0–1–0 2000 Athina silver: 200 m butterfly | |
| Jarno Pihlava | SWM | Olympics | 2000—2004 | 0–0–2 2002 Moskva bronze: 100 m breaststroke and 200 m breaststroke | |
| Denis Pimankov | SWM | Olympics | 1996—2004 | 0–1–4 1995 Rio de Janeiro silver: 100 m butterfly, bronze: 4×100 m medley relay; 2000 Athina bronze: 4×200 m freestyle relay; 2002 Moskva bronze: 4×100 m freestyle relay and 4×100 m medley relay | |
| Adam Pine | SWM | Olympics | 2000—2008 | 2–4–0 2002 Moskva silver: 50 m butterfly, 100 m butterfly, and 4×100 m medley relay; 2008 Manchester gold: 50 m butterfly and 4×100 m medley relay, silver: 100 m butterfly | |
| Carly Piper | SWM | Olympics | 2004 | 0–0–1 2006 Shanghai bronze: 4×200 m freestyle relay (swam in heats only) | |
| Jim Piper | SWM | Olympics | 2004 | 1–1–0 2002 Moskva gold: 200 m breaststroke, silver: 4×100 m medley relay | |
| David Plummer | SWM | Olympics | 2016 | 1–0–0 2010 Dubai gold: 4×100 m medley relay (swam in heats only) | |
| Sarah Poewe | SWM | Olympics | 2000—2012 | 2–1–0 2000 Athina gold: 50 m breaststroke and 100 m breaststroke (competed for South Africa); 2002 Moskva silver: 100 m breaststroke (competed for South Africa) | |
| Mikhail Polishchuk | SWM | Olympics | 2008—2012 | 1–1–1 2010 Dubai gold: 4×200 m freestyle relay (swam in heats only); 2014 Doha silver: 4×100 m freestyle relay, bronze: 4×200 m freestyle relay | |
| Claudia Poll | SWM | Olympics | 1996—2004 | 4–0–0 1995 Rio de Janeiro gold: 200 m freestyle and 400 m freestyle; 1997 Göteborg gold: 200 m freestyle and 400 m freestyle | |
| Anatoly Polyakov | SWM | Olympics | 2000—2004 | 0–0–2 2000 Athina bronze: 200 m butterfly and 4×200 m freestyle relay | |
| Vlad Polyakov | SWM | Olympics | 2004—2012 | 1–0–2 2004 Indianapolis bronze: 100 m breaststroke and 200 m breaststroke; 2006 Shanghai gold: 200 m breaststroke | |
| Aleksandr Popkov | SWM | Olympics | 2016 | 6–0–0 2014 Doha gold: 4×50 m freestyle relay (swam in heats only); 2016 Windsor gold: 4×50 m freestyle relay, 4×100 m freestyle relay, 4×50 m medley relay, 4×100 m medley relay (swam in heats only), and 4×50 m freestyle mixed relay (swam in heats only) | |
| Aleksandr Popov | SWM | Olympics / Administrator / Opening Flagbearer | 1992—2016 | 0–0–2 2002 Moskva bronze: 50 m freestyle and 4×100 m freestyle relay (competed for Russia) | |
| Veronika Popova-Andrusenko | SWM | Olympics | 2012—2020 | 0–3–1 2012 İstanbul silver: 4×200 m freestyle relay; 2014 Doha silver: 4×50 m freestyle mixed relay; 2016 Windsor silver: 400 m freestyle, bronze: 4×200 m freestyle relay | |
| Angela Postma | SWM | Olympics | 1996 | 0–1–0 1995 Rio de Janeiro silver: 50 m freestyle | |
| Camelia Potec | SWM | Olympics | 2000—2012 | 0–1–0 2008 Manchester silver: 400 m freestyle | |
| Jordan Pothain | SWM | Olympics | 2016—2020 | 0–1–0 2016 Windsor silver: 4×100 m freestyle relay | |
| Vladimir Predkin | SWM | Olympics | 1996 | 0–0–1 1993 Palma de Mallorca bronze: 4×100 m freestyle relay | |
| Josh Prenot | SWM | Olympics | 2016 | 0–1–0 2018 Hangzhou silver: 200 m medley | |
| Kirill Prigoda | SWM | Olympics | 2016—2020 | 5–1–1 2014 Doha bronze: 200 m breaststroke; 2016 Windsor gold: 4×50 m freestyle relay (swam in heats only), 4×50 m medley relay, and 4×100 m medley relay; 2018 Hangzhou gold: 200 m breaststroke and 4×50 m medley relay (swam in heats only), silver: 4×100 m medley relay | |
| Yury Prilukov | SWM | Olympics | 2004—2008 | 6–1–0 2002 Moskva silver: 4×200 m freestyle relay; 2004 Indianapolis gold: 400 m freestyle and 1500 m freestyle; 2006 Shanghai gold: 400 m freestyle and 1500 m freestyle; 2008 Manchester gold: 400 m freestyle and 1500 m freestyle | |
| Qi Hui | SWM | Olympics | 2000—2008 | 4–0–2 1999 Hong Kong bronze: 200 m breaststroke; 2002 Moskva gold: 200 m breaststroke, bronze: 4×100 metre medley relay (swam in heats only); 2006 Shanghai gold: 200 m breaststroke, 200 m medley, and 400 m medley | |
| Qiu Yuhan | SWM | Olympics / YOG | 2012—2014 | 0–1–1 2012 İstanbul bronze: 4×200 m freestyle relay; 2014 Doha silver: 4×200 m freestyle relay | |
| Simona Quadarella | SWM | Olympics / YOG | 2014—2024 | 0–1–0 2018 Hangzhou silver: 800 m freestyle | |
| Danas Rapšys | SWM | Olympics | 2016—2024 | 1–1–0 2018 Hangzhou gold: 400 m freestyle, silver: 200 m freestyle | |
| Shayne Reese | SWM | Olympics | 2004—2008 | 3–4–1 2004 Indianapolis silver: 100 m medley and 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2006 Shanghai gold: 4×100 m medley relay (swam in heats only) and 4×200 m freestyle relay, silver: 4×100 m freestyle relay; 2008 Manchester gold: 100 m medley, silver: 4×100 m freestyle relay | |
| Chris Renaud | SWM | Olympics | 1996—2000 | 0–1–0 1995 Rio de Janeiro silver: 200 m backstroke | |
| Molly Renshaw | SWM | Olympics | 2016—2020 | 1–0–0 2016 Windsor gold: 200 m breaststroke | |
| Robbie Renwick | SWM | Olympics | 2008—2016 | 0–1–1 2008 Manchester silver: 4×200 m freestyle relay, bronze: 400 m freestyle | |
| Brenton Rickard | SWM | Olympics | 2008—2012 | 1–6–1 2004 Indianapolis silver: 50 m breaststroke, 100 m breaststroke, 200 m breaststroke, and 4×100 m medley relay; 2008 Manchester gold: 4×100 m medley relay; 2006 Shanghai silver: 100 m breaststroke and 200 m breaststroke; 2010 Dubai bronze: 200 m breaststroke | |
| Flavia Rigamonti | SWM | Olympics | 2000—2008 | 0–0–3 1999 Hong Kong bronze: 800 m freestyle; 2000 Athina bronze: 800 m freestyle; 2002 Moskva bronze: 800 m freestyle | |
| Sam Riley | SWM | Olympics | 1992—1996 | 3–1–3 1993 Palma de Mallorca bronze: 100 m breaststroke and 200 m breaststroke; 1995 Rio de Janeiro gold: 100 m breaststroke, 200 m breaststroke, and 4×100 m medley relay; 1999 Hong Kong silver: 4×100 m medley relay, bronze: 100 m breaststroke | |
| Markus Rogan | SWM | Olympics / Opening Flagbearer | 2000—2012 | 1–4–1 2006 Shanghai silver: 100 m backstroke, 200 m backstroke, and 200 m medley; 2008 Manchester gold: 200 m backstroke; 2010 Dubai silver: 200 m medley, bronze: 200 m backstroke | |
| Phil Rogers | SWM | Olympics | 1992—2000 | 4–2–0 1993 Palma de Mallorca gold: 100 m breaststroke, silver: 200 m breaststroke; 1997 Göteborg gold: 4×100 m medley relay; 1999 Hong Kong gold: 200 m breaststroke and 4×100 m medley relay; 2002 Moskva silver: 4×100 m medley relay (swam in heats only) | |
| Sue Rolph | SWM | Olympics | 1996—2000 | 1–0–2 1997 Göteborg bronze: 200 m medley; 1999 Hong Kong gold: 4×100 m freestyle relay, bronze: 100 m freestyle | |
| Mykhailo Romanchuk | SWM | Olympics / YOG / Opening Flagbearer | 2014—2024 | 1–0–0 2018 Hangzhou gold: 1500 m freestyle | |
| Giaan Rooney | SWM | Olympics | 2000—2004 | 0–2–2 1999 Hong Kong silver: 4×100 m medley relay, bronze: 4×200 m freestyle relay; 2002 Moskva silver: 4×100 m freestyle relay, bronze: 4×200 m freestyle relay | |
| Gabrielle Rose | SWM | Olympics | 1996—2000 | 0–3–0 2002 Moskva silver: 100 m medley, 200 m medley, and 4×200 m freestyle relay (competed for the United States) | |
| Matt Rose | SWM | Olympics | 2004 | 0–0–1 2004 Indianapolis bronze: 4×100 m freestyle relay | |
| Massi Rosolino | SWM | Olympics | 1996—2008 | 1–2–7 1999 Hong Kong bronze: 400 m freestyle; 2000 Athina silver: 200 m freestyle, bronze: 200 m medley and 400 m freestyle; 2006 Shanghai gold: 4×200 m freestyle relay, bronze: 200 m freestyle and 400 m freestyle; 2008 Manchester silver: 400 m freestyle, bronze: 200 m freestyle and 4×200 m freestyle relay | |
| Sharon van Rouwendaal | OWS/SWM | Olympics | 2012—2024 | 1–1–1 2014 Doha gold: 4×200 m freestyle relay, silver: 400 m freestyle, bronze: 800 m freestyle | |
| Taylor Ruck | SWM | Olympics | 2016—2024 | 2–1–1 2016 Windsor gold: 4×50 m freestyle relay and 4×200 m freestyle relay, silver: 4×100 m medley relay (swam in heats only), bronze: 200 m freestyle | |
| Cathleen Rund | SWM | Olympics | 1996—2000 | 0–0–1 1993 Palma de Mallorca bronze: 200 m backstroke | |
| Thomas Rupprath | SWM | Olympics | 2000—2008 | 1–3–1 2000 Athina silver: 4×100 m medley relay; 2004 Indianapolis gold: 50 m backstroke, silver: 100 m medley, bronze: 100 m backstroke; 2006 Shanghai silver: 50 m backstroke |