Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Connor Jaeger | USA |
SWM | Olympics | 2012—2016 | 1–0–2 2014 Gold Coast gold: 1500 m freestyle, bronze: 400 m freestyle and 800 m freestyle |
| Tom Jager | USA |
SWM | Olympics | 1984—1992 | 5–0–0 1987 Brisbane gold: 50 m freestyle; 1989 Tokyo gold: 50 m freestyle and 4×100 m freestyle relay; 1991 Edmonton gold: 50 m freestyle and 4×100 m freestyle relay |
| Riley Janes | CAN |
SWM | Olympics | 2004 | 0–0–1 2002 Yokohama bronze: 4×100 m medley relay |
| Barbara Jardin | CAN |
SWM | Olympics | 2012 | 0–0–1 2010 Irvine bronze: 4×200 m freestyle relay |
| Rhi Jeffrey | USA |
SWM | Olympics | 2004 | 0–1–0 2002 Yokohama silver: 4×100 m freestyle relay |
| Toni Jeffs | NZL |
SWM | Olympics | 1992 | 0–0–1 1991 Edmonton bronze: 50 m freestyle |
| Larsen Jensen | USA |
SWM | Olympics | 2004—2008 | 0–1–1 2002 Yokohama silver: 800 m freestyle, bronze: 1500 m freestyle |
| Jeong Seul-Gi | KOR |
SWM | Olympics | 2008 | 0–0–1 2006 Victoria bronze: 200 m breaststroke |
| Brian Johns | CAN |
SWM | Olympics | 2000—2008 | 0–1–2 1999 Sydney bronze: 4×200 m freestyle relay; 2002 Yokohama bronze: 4×200 m freestyle relay; 2006 Victoria silver: 4×200 m freestyle relay |
| Emma Johnson | AUS |
SWM | Olympics | 1996 | 0–1–0 1995 Atlanta silver: 4×200 m freestyle relay |
| Jenna Johnson | USA |
SWM | Olympics | 1984 | 4–2–2 1985 Tokyo gold: 100 m freestyle and 4×100 m freestyle relay, silver: 50 m freestyle; 1987 Brisbane gold: 4×100 m freestyle relay, 1987 Brisbane silver: 100 m freestyle, bronze: 100 m butterfly; 1989 Tokyo gold: 4×100 m medley relay, bronze: 100 m butterfly |
| Susan Johnson | USA |
SWM | Olympics | 1988 | 1–0–1 1987 Brisbane gold: 4×100 m medley relay, bronze: 200 m breaststroke |
| Mark Johnston | CAN |
SWM | Olympics | 2000—2004 | 0–0–2 1999 Sydney bronze: 4×200 m freestyle relay; 2002 Yokohama bronze: 4×200 m freestyle relay |
| Cullen Jones | USA |
SWM | Olympics | 2008—2012 | 2–0–0 2006 Victoria gold: 50 m freestyle and 4×100 m freestyle relay |
| Leisel Jones | AUS |
SWM | Olympics | 2000—2012 | 1–4–1 2002 Yokohama gold: 4×100 m medley relay, silver: 200 m breaststroke; 2010 Irvine silver: 100 m breaststroke, 200 m breaststroke, and 4×100 m medley relay, bronze: 50 m breaststroke |
| Shaun Jordan | USA |
SWM | Olympics | 1988—1992 | 1–0–1 1991 Edmonton gold: 4×100 m freestyle relay, bronze: 100 m freestyle |
| Dan Jorgensen | USA |
SWM | Olympics | 1988—1992 | 2–4–1 1985 Tokyo silver: 1500 m freestyle; 1987 Brisbane silver: 1500 m freestyle; 1989 Tokyo gold: 4×200 m freestyle relay, silver: 400 m freestyle and 800 m freestyle; 1991 Edmonton gold: 4×200 m freestyle relay bronze: 400 m freestyle |
| Lars Jorgensen | USA |
SWM | Olympics | 1988 | 0–1–0 1989 Tokyo silver: 1500 m freestyle |
| Kara Lynn Joyce | USA |
SWM | Olympics | 2004—2012 | 2–0–0 2006 Victoria gold: 50 m freestyle and 4×100 m freestyle relay |
| Chase Kalisz | USA |
SWM | Olympics | 2016—2024 | 2–0–1 2014 Gold Coast bronze: 400 m medley; 2018 Tokyo gold: 200 m medley and 400 m medley |
| Yoko Kando | JPN |
SWM | Olympics | 1992 | 0–0–3 1991 Edmonton bronze: 100 m butterfly, 200 m butterfly, and 4×100 m medley relay |
| Rie Kaneto | JPN |
SWM | Olympics | 2008—2016 | 0–1–0 2014 Gold Coast silver: 200 m breaststroke |
| Ron Karnaugh | USA |
SWM | Olympics | 1992 | 0–1–1 1989 Tokyo silver: 200 m medley; 1997 Fukuoka bronze: 200 m medley |
| Kyoko Kasuya | JPN |
SWM | Olympics | 1992 | 0–0–3 1991 Edmonton bronze: 200 m breaststroke and 4×100 m medley relay; 1993 Kobe bronze: 4×100 m medley relay |
| Yuka Kato | JPN |
SWM | Olympics | 2008—2012 | 0–0–1 2010 Irvine bronze: 4×100 m medley relay |
| Keiichi Kawanaka | JPN |
SWM | Olympics | 1992 | 0–0–1 1991 Edmonton bronze: 200 m butterfly |
| Kalyn Keller | USA |
SWM | Olympics | 2004 | 0–1–0 2006 Victoria silver: 10 km |
| Klete Keller | USA |
SWM | Olympics | 2000—2008 | 2–1–2 2002 Yokohama silver: 4×200 m freestyle relay, bronze: 400 m freestyle; 2006 Victoria gold: 200 m freestyle and 4×200 m freestyle relay, bronze: 400 m freestyle |
| Wayne Kelly | CAN |
SWM | Olympics | 1984 | 0–1–0 1985 Tokyo silver: 4×200 m freestyle relay |
| Jane Kerr | CAN |
SWM | Olympics | 1984—1988 | 1–1–5 1985 Tokyo gold: 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 1987 Brisbane silver: 4×100 m medley relay, bronze: 100 m freestyle, 200 m medley, and 4×200 m freestyle relay |
| Sean Killion | USA |
SWM | Olympics | 1992 | 0–1–0 1987 Brisbane silver: 400 m freestyle |
| Lilly King | USA |
SWM | Olympics | 2016—2024 | 1–2–0 2018 Tokyo gold: 100 m breaststroke, silver: 200 m breaststroke and 4×100 m medley relay |
| Paul Kingsman | NZL |
SWM | Olympics | 1984—1988 | 0–0–2 1987 Brisbane bronze: 100 m backstroke; 1989 Tokyo bronze: 200 m backstroke |
| Bill Kirby | AUS |
SWM | Olympics | 2000 | 1–0–0 1999 Sydney gold: 4×200 m freestyle relay |
| Tara Kirk | USA |
SWM | Olympics | 2004 | 1–1–0 2002 Yokohama silver: 100 m breaststroke; 2006 Victoria gold: 100 m breaststroke |
| Masayuki Kishida | JPN |
SWM | Olympics | 2008 | 0–1–0 2010 Irvine silver: 4×100 m medley relay |
| Yuri Kisil | CAN |
SWM | Olympics | 2016—2024 | 0–0–1 2018 Tokyo bronze: 50 m freestyle |
| Asami Kitagawa | JPN |
SWM | Olympics | 2008 | 0–2–0 2006 Victoria silver: 200 m breaststroke and 4×100 m medley relay |
| Kosuke Kitajima | JPN |
SWM | Olympics / Closing Flagbearer | 2000—2012 | 3–3–1 2002 Yokohama gold: 100 m breaststroke; 2006 Victoria silver: 200 m breaststroke and 4×100 m medley relay, bronze: 100 m breaststroke; 2010 Irvine gold: 100 m breaststroke and 200 m breaststroke, silver: 4×100 m medley relay |
| Takayo Kitano | JPN |
SWM | Olympics | 1988 | 0–1–0 1987 Brisbane silver: 200 m butterfly |
| Michael Klim | AUS |
SWM | Olympics | 1996—2004 | 6–6–0 1995 Atlanta silver: 4×100 m freestyle relay; 1997 Fukuoka gold: 100 m freestyle and 200 m freestyle, silver: 100 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay; 1999 Sydney gold: 100 m freestyle, 100 m butterfly, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 200 m freestyle |
| Morgan Knabe | CAN |
SWM | Olympics | 2000—2004 | 0–1–2 1997 Fukuoka bronze: 4×100 m medley relay; 1999 Sydney silver: 4×100 m medley relay, bronze: 100 m breaststroke |
| Yuki Kobori | JPN |
SWM | Olympics | 2012—2016 | 0–3–1 2010 Irvine silver: 4×200 m freestyle relay; 2014 Gold Coast silver: 4×200 m freestyle relay; 2018 Tokyo silver: 4×100 m medley relay, bronze: 4×200 m freestyle relay |
| Kristel Köbrich | CHI |
OWS/SWM | Olympics / Opening Flagbearer | 2004—2024 | 0–0–1 2010 Irvine bronze: 1500 m freestyle |
| Junya Koga | JPN |
SWM | Olympics | 2016 | 1–2–0 2010 Irvine gold: 50 m backstroke, silver: 100 m backstroke and 4×100 m medley relay |
| Yoko Koikawa | JPN |
SWM | Olympics | 1992 | 0–2–3 1991 Edmonton silver: 4×100 m freestyle relay and 4×200 m freestyle relay; 1993 Kobe bronze: 100 m backstroke, 4×200 m freestyle relay, and 4×100 m medley relay |
| Rachel Komisarz | USA |
SWM | Olympics | 2004 | 1–1–0 2006 Victoria gold: 4×100 m medley relay, silver: 100 m butterfly |
| Yasuhiro Koseki | JPN |
SWM | Olympics | 2016 | 3–3–0 2014 Gold Coast gold: 100 m breaststroke and 200 m breaststroke, silver: 4×100 m medley relay; 2018 Tokyo gold: 100 m breaststroke, silver: 4×100 m medley relay and 4×100 m medley mixed relay |
| Kristy Kowal | USA |
SWM | Olympics | 2000 | 1–1–3 1997 Fukuoka gold: 4×100 m medley relay, bronze: 100 m breaststroke; 1999 Sydney silver: 200 m breaststroke, bronze: 100 m breaststroke; 2002 Yokohama bronze: 200 m breaststroke |
| Daniel Kowalski | AUS |
SWM | Olympics | 1996—2000 | 3–5–0 1993 Kobe silver: 400 m freestyle, 800 m freestyle, and 1500 m freestyle; 1995 Atlanta gold: 400 m freestyle, 800 m freestyle; 1995 Atlanta gold: 4×200 m freestyle relay, silver: 200 m freestyle and 1500 m freestyle |
| Lenny Krayzelburg | USA |
SWM | Olympics | 2000—2004 | 6–0–0 1997 Fukuoka gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay; 1999 Sydney gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay |
| Mitzi Kremer | USA |
SWM | Olympics | 1988 | 3–1–0 1987 Brisbane gold: 200 m freestyle and 4×200 m freestyle relay; 1989 Tokyo gold: 4×200 m freestyle relay, silver: 200 m freestyle |
| Yolane Kukla | AUS |
SWM | Olympics | 2012 | 0–2–0 2010 Irvine silver: 4×100 m freestyle relay and 4×100 m medley relay |
| Ariana Kukors | USA |
SWM | Olympics | 2012 | 0–2–0 2006 Victoria silver: 400 m medley and 200 m medley |
| Fumie Kurotori | JPN |
SWM | Olympics | 1996 | 1–0–0 1995 Atlanta gold: 400 m medley |
| Brent Lang | USA |
SWM | Olympics | 1988 | 3–0–0 1989 Tokyo gold: 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay |
| Darren Lange | AUS |
SWM | Olympics | 1992 | 0–3–1 1991 Edmonton silver: 4×100 m freestyle relay, bronze: 50 m freestyle; 1993 Kobe silver: 4×100 m freestyle relay; 1995 Atlanta silver: 4×100 m freestyle relay |
| Phillippa Langrell | NZL |
SWM | Olympics | 1992 | 0–1–0 1991 Edmonton silver: 1500 m freestyle |
| Mitch Larkin | AUS |
SWM | Olympics | 2012—2020 | 1–1–4 2014 Gold Coast bronze: 200 m backstroke and 4×100 m medley relay; 2018 Tokyo gold: 4×100 m medley mixed relay, silver: 200 m medley, bronze: 100 m backstroke and 4×100 m medley relay |
| Breeja Larson | USA |
SWM | Olympics | 2012 | 0–0–1 2014 Gold Coast bronze: 100 m breaststroke |
| Andrew Lauterstein | AUS |
SWM | Olympics | 2008 | 0–0–1 2006 Victoria bronze: 4×100 m medley relay |
| Micah Lawrence | USA |
SWM | Olympics | 2012 | 1–0–0 2018 Tokyo gold: 200 m breaststroke (competed as Micah Sumrall) |
| Rodney Lawson | AUS |
SWM | Olympics | 1992 | 0–0–1 1987 Brisbane bronze: 4×100 m medley relay |
| Le Jingyi | CHN |
SWM | Olympics | 1992—1996 | 1–2–0 1997 Fukuoka gold: 50 m freestyle, silver: 100 m freestyle and 200 m freestyle |
| Katie Ledecky | USA |
SWM | Olympics / Closing Flagbearer | 2012—2024 | 8–1–1 2014 Gold Coast gold: 200 m freestyle, 400 m freestyle, 800 m freestyle, 1500 m freestyle, and 4×200 m freestyle relay; 2018 Tokyo gold: 400 m freestyle, 800 m freestyle, and 1500 m freestyle, silver: 4×200 m freestyle relay, bronze: 200 m freestyle |
| Rhiannon Leier | CAN |
SWM | Olympics | 2000—2004 | 0–0–1 2002 Yokohama bronze: 4×100 m medley relay |
| Justin Lemberg | AUS |
SWM | Olympics | 1984 | 1–0–2 1985 Tokyo gold: 400 m freestyle, bronze: 4×200 m freestyle relay; 1989 Tokyo bronze: 4×200 m freestyle relay |
| Caitlin Leverenz | USA |
SWM | Olympics | 2012 | 0–0–3 2010 Irvine bronze: 200 m medley and 400 m medley; 2014 Gold Coast bronze: 200 m medley |
| Hayley Lewis | AUS |
SWM | Olympics | 1992—2000 | 2–3–2 1993 Kobe gold: 1500 m freestyle, silver: 800 m freestyle and 4×200 m freestyle relay, bronze: 400 m medley; 1995 Atlanta gold: 800 m freestyle, silver: 1500 m freestyle, bronze: 400 m freestyle |
| Jason Lezak | USA |
SWM | Olympics | 2000—2012 | 5–3–0 1999 Sydney silver: 4×100 m freestyle relay; 2002 Yokohama gold: 50 m freestyle and 4×100 m medley relay, silver: 4×100 m freestyle relay; 2006 Victoria gold: 4×100 m freestyle relay and 4×100 m medley relay, silver: 100 m freestyle; 2010 Irvine gold: 4×100 m freestyle relay |
| Marianne Limpert | CAN |
SWM | Olympics | 1992—2000 | 0–2–4 1993 Kobe bronze: 4×100 m freestyle relay; 1995 Atlanta bronze: 4×200 m freestyle relay; 1997 Fukuoka silver: 200 m medley and 4×100 m freestyle relay; 1999 Sydney bronze: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Lin Li | CHN |
SWM | Olympics | 1988—1996 | 1–1–1 1989 Tokyo gold: 200 m medley, silver: 400 m medley; 1991 Edmonton bronze: 400 m medley |
| Nicole Livingstone-Stevenson | AUS |
SWM | Olympics | 1988—1996 | 4–7–3 1987 Brisbane gold: 100 m backstroke and 200 m backstroke (competed as Nicole Livingstone); 1989 Tokyo silver: 100 m backstroke and 4×100 m medley relay, bronze: 200 m backstroke (competed as Nicole Livingstone); 1991 Edmonton silver: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay (competed as Nicole Livingstone); 1993 Kobe silver: 4×100 m medley relay (competed as Nicole Stevenson); 1995 Atlanta gold: 200 m backstroke and 4×100 m medley relay, silver: 100 m backstroke (competed as Nicole Stevenson) |
| Danyon Loader | NZL |
SWM | Olympics | 1992—1996 | 2–1–6 1993 Kobe gold: 200 m butterfly, bronze: 100 m butterfly and 4×200 m freestyle relay; 1995 Atlanta gold: 200 m freestyle, silver: 400 m freestyle, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 1997 Fukuoka bronze: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Ryan Lochte | USA |
SWM | Olympics | 2004—2016 | 8–4–0 2006 Victoria gold: 4×200 m freestyle relay, silver: 100 m backstroke, and 200 m medley; 2010 Irvine gold: 200 m freestyle, 200 m backstroke, 200 m medley, 400 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay; 2014 Gold Coast gold: 4×200 m freestyle relay, silver: 100 m butterfly and 4×100 m freestyle relay |
| Scott Logan | AUS |
SWM | Olympics | 1996 | 0–1–0 1997 Fukuoka silver: 4×100 m freestyle relay |
| Lou Yaping | CHN |
SWM | Olympics | 1988 | 0–1–0 1987 Brisbane silver: 4×100 m freestyle relay |
| Gideon Louw | RSA |
SWM | Olympics | 2008—2012 | 0–0–1 2010 Irvine bronze: 4×100 m freestyle relay |
| Lea Loveless | USA |
SWM | Olympics | 1992 | 5–4–0 1989 Tokyo gold: 100 m backstroke and 4×100 m medley relay; 1993 Kobe gold: 100 m backstroke and 4×100 m medley relay, silver: 200 m backstroke; 1995 Atlanta silver: 4×100 m medley relay; 1997 Fukuoka silver: 100 m backstroke and 200 m backstroke |
| Lu Ying | CHN |
SWM | Olympics | 2012—2016 | 0–1–0 2014 Gold Coast silver: 100 m butterfly |
| João de Lucca | BRA |
SWM | Olympics | 2016 | 0–0–1 2014 Gold Coast bronze: 4×100 m freestyle relay |
| Luo Xuejuan | CHN |
SWM | Olympics | 2000—2004 | 0–0–1 2002 Yokohama bronze: 100 m breaststroke |
| Yannick Lupien | CAN |
SWM | Olympics | 2000—2004 | 0–1–3 1999 Sydney silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 2002 Yokohama bronze: 4×100 m freestyle relay |
| Linda MacKenzie | AUS |
SWM | Olympics | 2004—2008 | 0–2–1 2006 Victoria silver: 200 m freestyle and 4×200 m freestyle relay, bronze: 4×100 m freestyle relay |
| Lise Mackie | AUS |
SWM | Olympics | 1992—1996 | 0–1–1 1991 Edmonton silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay |
| Brittany MacLean | CAN |
SWM | Olympics | 2012—2016 | 0–0–3 2014 Gold Coast bronze: 800 m freestyle, bronze: 1500 m freestyle, and 4×200 m freestyle relay |
| Christine Magnuson | USA |
SWM | Olympics | 2008 | 0–1–1 2010 Irvine silver: 100 m butterfly, bronze: 50 m butterfly |
| James Magnussen | AUS |
SWM | Olympics | 2012—2016 | 1–1–1 2010 Irvine silver: 4×100 m freestyle relay; 2014 Gold Coast gold: 4×100 m freestyle relay, bronze: 100 m freestyle |
| Joanne Malar | CAN |
SWM | Olympics | 1992—2000 | 2–2–6 1993 Kobe bronze: 4×100 m freestyle relay; 1995 Atlanta silver: 200 m medley, bronze: 4×200 m freestyle relay; 1997 Fukuoka silver: 4×200 m freestyle relay, bronze: 200 m freestyle, 200 m medley, and 400 m medley; 1999 Sydney gold: 200 m medley and 400 m medley, bronze: 4×200 m freestyle relay |
| Tom Malchow | USA |
SWM | Olympics | 1996—2004 | 3–2–0 1997 Fukuoka gold: 4×200 m freestyle relay, silver: 200 m butterfly; 1999 Sydney gold: 200 m butterfly, silver: 4×200 m freestyle relay; 2002 Yokohama gold: 200 m butterfly |
| Simone Manuel | USA |
SWM | Olympics | 2016—2024 | 0–6–2 2014 Gold Coast silver: 4×100 m freestyle relay and 4×100 m medley relay, bronze: 100 m freestyle; 2018 Tokyo silver: 50 m freestyle, 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay, bronze: 4×100 m medley mixed relay |
| Melanie Margalis | USA |
SWM | Olympics | 2016 | 0–1–0 2018 Tokyo silver: 400 m medley |
| Angel Martino | USA |
SWM | Olympics | 1992—1996 | 7–3–1 1987 Brisbane gold: 200 m medley and 4×100 m medley relay, silver: 100 m butterfly; 1991 Edmonton gold: 100 m freestyle and 4×100 m freestyle relay, silver: 50 m freestyle; 1993 Kobe gold: 4×100 m freestyle relay and 4×100 m medley relay, silver: 50 m freestyle, bronze: 100 m freestyle; 1995 Atlanta gold: 4×100 m freestyle relay |
| Kylie Masse | CAN |
SWM | Olympics | 2016—2024 | 1–0–0 2018 Tokyo gold: 100 m backstroke |
| Takeshi Matsuda | JPN |
SWM | Olympics | 2004—2016 | 0–2–4 2006 Victoria bronze: 1500 m freestyle and 200 m butterfly; 2010 Irvine silver: 4×200 m freestyle relay, bronze: 800 m freestyle and 200 m butterfly; 2014 Gold Coast silver: 4×200 m freestyle relay |
| Yayoi Matsumoto | JPN |
SWM | Olympics | 2012—2016 | 0–0–1 2014 Gold Coast bronze: 4×100 m freestyle relay |
| Yukihiro Matsushita | JPN |
SWM | Olympics | 1996 | 0–0–1 1995 Atlanta bronze: 4×100 m medley relay |
| Julie McDonald | AUS |
SWM | Olympics | 1968 | 1–2–1 1987 Brisbane gold: 800 m freestyle, silver: 400 m freestyle and 4×200 m freestyle relay; 1989 Tokyo bronze: 1500 m freestyle |
| Cameron McEvoy | AUS |
SWM | Olympics | 2012—2024 | 2–0–3 2014 Gold Coast gold: 100 m freestyle and 4×100 m freestyle relay, bronze: 200 m freestyle, 4×200 m freestyle relay, and 4×100 m medley relay |
| Tracey McFarlane | USA |
SWM | Olympics | 1988 | 1–1–1 1989 Tokyo gold: 4×100 m medley relay, silver: 100 m breaststroke, bronze: 200 m breaststroke |
| Tyler McGill | USA |
SWM | Olympics | 2012 | 0–1–0 2010 Irvine silver: 100 m butterfly |
| Jacqui McKenzie | AUS |
SWM | Olympics | 1992 | 0–0–1 1991 Edmonton bronze: 200 m medley |
| Michael McKenzie | AUS |
SWM | Olympics | 1988 | 3–0–2 1985 Tokyo gold: 1500 m freestyle, bronze: 400 m freestyle; 1987 Brisbane gold: 1500 m freestyle; 1989 Tokyo gold: 800 m freestyle, bronze: 1500 m freestyle |
| David McKeon | AUS |
SWM | Olympics | 2012—2016 | 0–0–1 2014 Gold Coast bronze: 4×200 m freestyle relay |
| Emma McKeon | AUS |
SWM | Olympics / YOG | 2010—2024 | 4–1–2 2014 Gold Coast silver: 4×200 m freestyle relay; 2018 Tokyo gold: 4×100 m freestyle relay, 4×200 m freestyle relay, 4×100 m medley relay, and 4×100 m medley mixed relay, bronze: 50 m freestyle and 100 m butterfly |
| Taylor McKeown | AUS |
SWM | Olympics | 2016 | 0–0–1 2014 Gold Coast bronze: 200 m breaststroke |
| Matt McLean | USA |
SWM | Olympics | 2012 | 1–0–0 2014 Gold Coast gold: 4×200 m freestyle relay |
| Jack McLoughlin | AUS |
SWM | Olympics | 2016—2020 | 1–0–2 2018 Tokyo gold: 400 m freestyle, bronze: 800 m freestyle and 1500 m freestyle |
| Keryn McMaster | AUS |
SWM | Olympics | 2016 | 0–0–1 2014 Gold Coast bronze: 400 m medley |
| Mary T. Meagher | USA |
SWM | Olympics / Olympic Flagbearer | 1984—1996 | 2–0–0 1985 Tokyo gold: 100 m butterfly and 200 m butterfly |
| Lori Melien | CAN |
SWM | Olympics | 1988 | 0–1–1 1985 Tokyo bronze: 4×100 m freestyle relay; 1987 Brisbane silver: 4×100 m medley relay |
| Scott Miller | AUS |
SWM | Olympics | 1996 | 2–3–0 1993 Kobe silver: 200 m butterfly and 4×100 m medley relay; 1995 Atlanta gold: 100 m butterfly and 200 m butterfly, silver: 4×100 m medley relay |
| Alice Mills | AUS |
SWM | Olympics | 2004—2008 | 1–1–0 2002 Yokohama gold: 4×100 m freestyle relay, silver: 4×200 m freestyle relay |
| Sumika Minamoto | JPN |
SWM | Olympics | 1996—2000 | 0–0–3 1995 Atlanta bronze: 50 m freestyle and 4×100 m freestyle relay; 1997 Fukuoka bronze: 4×100 m medley relay |
| Mike Mintenko | CAN |
SWM | Olympics | 2000—2004 | 0–1–4 1999 Sydney silver: 4×100 m medley relay; 2002 Yokohama bronze: 100 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay |
| Maki Mita | JPN |
SWM | Olympics | 2000—2008 | 0–1–2 2002 Yokohama bronze: 4×200 m freestyle relay; 2006 Victoria silver: 4×100 m medley relay, bronze: 4×200 m freestyle relay |
| Betsy Mitchell | USA |
SWM | Olympics | 1984—1988 | 2–0–1 1985 Tokyo gold: 100 m backstroke and 4×100 m freestyle relay, bronze: 200 m backstroke |
| Sachi Mochida | JPN |
SWM | Olympics | 2016 | 0–1–0 2018 Tokyo silver: 200 m butterfly |
| John Moffet | USA |
SWM | Olympics | 1984 | 3–0–0 1985 Tokyo gold: 100 m breaststroke, 200 m breaststroke, and 4×100 m medley relay |
| Fabíola Molina | BRA |
SWM | Olympics | 2000—2012 | 0–0–1 2010 Irvine bronze: 50 m backstroke |
| Kenrick Monk | AUS |
SWM | Olympics | 2008—2012 | 0–1–2 2006 Victoria silver: 4×100 m freestyle relay, bronze: 4×200 m freestyle relay; 2010 Irvine bronze: 4×200 m freestyle relay |
| Graeme Moore | RSA |
SWM | Olympics | 2012 | 0–0–1 2010 Irvine bronze: 4×100 m freestyle relay |
| Pablo Morales | USA |
SWM | Olympics | 1984—1992 | 5–0–1 1985 Tokyo gold: 100 m butterfly, 200 m medley, and 4×100 m medley relay; 1987 Brisbane gold: 100 m butterfly and 4×100 m medley relay, bronze: 200 m medley |
| Takahiro Mori | JPN |
SWM | Olympics | 2004 | 0–1–1 2002 Yokohama silver: 200 m medley, bronze: 400 m medley |
| Tomomi Morita | JPN |
SWM | Olympics | 2004—2008 | 0–1–3 2002 Yokohama bronze: 100 m backstroke; 2006 Victoria silver: 4×100 m medley relay, bronze: 100 m backstroke and 200 m backstroke |
| Erica Morningstar | CAN |
SWM | Olympics | 2008—2012 | 0–1–1 2006 Victoria silver: 4×100 m freestyle relay; 2010 Irvine bronze: 4×100 m freestyle relay |
| Anthony Mosse | NZL |
SWM | Olympics | 1984—1988 | 1–0–1 1985 Tokyo gold: 200 m butterfly; 1989 Tokyo bronze: 200 m butterfly |
| Angela Mullens | AUS |
SWM | Olympics | 1992 | 0–0–1 1987 Brisbane bronze: 4×100 m freestyle relay |
| Diana Munz | USA |
SWM | Olympics | 2000—2004 | 4–1–2 1997 Fukuoka silver: 1500 m freestyle, bronze: 400 m freestyle and 800 m freestyle; 2002 Yokohama gold: 400 m freestyle, 800 m freestyle, 1500 m freestyle, and 4×200 m freestyle relay |
| Ryan Murphy | USA |
SWM | Olympics | 2016—2024 | 3–0–1 2014 Gold Coast bronze: 100 m backstroke; 2018 Tokyo gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay |
| Sean Murphy | CAN |
SWM | Olympics | 1988 | 0–0–1 1985 Tokyo bronze: 200 m backstroke |
| Curtis Myden | CAN |
SWM | Olympics | 1992—2000 | 0–4–1 1995 Atlanta bronze: 200 m medley; 1997 Fukuoka silver: 200 m medley and 400 m medley; 1999 Sydney silver: 200 m medley and 400 m medley |
| John Mykkanen | USA |
SWM | Olympics | 1984 | 0–1–0 1985 Tokyo silver: 400 m freestyle |
| Tomoko Nagai | JPN |
SWM | Olympics | 2004 | 0–0–2 2002 Yokohama bronze: 4×100 m freestyle relay and bronze: 4×200 m freestyle relay |
| Hiroko Nagasaki | JPN |
SWM | Olympics | 1984—1988 | 1–1–0 1985 Tokyo gold: 200 m breaststroke, silver: 100 m breaststroke |
| Chikako Nakamori | JPN |
SWM | Olympics | 1984—1988 | 0–1–0 1989 Tokyo silver: 4×200 m freestyle relay |
| Katsumi Nakamura | JPN |
SWM | Olympics | 2016—2020 | 0–2–1 2014 Gold Coast silver: 4×100 m medley relay; 2018 Tokyo silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay |
| Mai Nakamura | JPN |
SWM | Olympics | 1996—2000 | 3–0–3 1995 Atlanta bronze: 100 m backstroke; 1997 Fukuoka gold: 100 m backstroke and 200 m backstroke, bronze: 4×100 m medley relay; 1999 Sydney gold: 100 m backstroke, bronze: 4×100 m medley relay |
| Reiko Nakamura | JPN |
SWM | Olympics | 2004—2008 | 1–0–1 2006 Victoria gold: 200 m backstroke, bronze: 100 m backstroke |
| Yuko Nakanishi | JPN |
SWM | Olympics | 2000—2008 | 0–2–0 2006 Victoria silver: 200 m butterfly and 4×100 m medley relay |
| Ayako Nakano | JPN |
SWM | Olympics | 1988—1992 | 0–2–0 1991 Edmonton silver: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Miki Nakao | JPN |
SWM | Olympics | 1996—2000 | 0–1–1 1997 Fukuoka bronze: 200 m backstroke; 1999 Sydney silver: 200 m backstroke |
| Anita Nall | USA |
SWM | Olympics | 1992 | 3–0–0 1993 Kobe gold: 100 m breaststroke, 200 m breaststroke, and 4×100 m medley relay |
| Eric Namesnik | USA |
SWM | Olympics | 1992—1996 | 1–3–0 1989 Tokyo silver: 400 m medley; 1991 Edmonton gold: 400 m medley, silver: 200 m medley; 1995 Atlanta silver: 400 m medley |
| Meagen Nay | AUS |
SWM | Olympics | 2008—2012 | 0–1–0 2010 Irvine silver: 4×200 m freestyle relay |
| Travis Nederpelt | AUS |
SWM | Olympics | 2004—2008 | 0–0–1 2006 Victoria bronze: 10 km |
| Ryk Neethling | RSA |
SWM | Olympics | 1996—2008 | 0–1–2 1999 Sydney silver: 1500 m freestyle, bronze: 200 m freestyle and 400 m freestyle |
| Anthony Nesty | SUR |
SWM | Olympics / Opening Flagbearer | 1984—2008 | 1–0–0 1989 Tokyo gold: 100 m butterfly |
| Nadine Neumann | AUS |
SWM | Olympics | 1996 | 0–0–2 1997 Fukuoka bronze: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Laura Nicholls | CAN |
SWM | Olympics | 1996—2000 | 0–1–3 1997 Fukuoka silver: 4×100 m freestyle relay; 1999 Sydney bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 2002 Yokohama bronze: 4×100 m medley relay |
| Patricia Noall | CAN |
SWM | Olympics | 1988 | 1–1–2 1987 Brisbane bronze: 4×200 m freestyle relay; 1989 Tokyo gold: 200 m freestyle, silver: 4×100 m freestyle relay, bronze: 4×200 m freestyle relay |
| Andrea Nugent | CAN |
SWM | Olympics | 1988—1992 | 0–0–1 1985 Tokyo bronze: 4×100 m freestyle relay |
| Lacey Nymeyer | USA |
SWM | Olympics | 2008 | 2–0–0 2006 Victoria gold: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Mike O'Brien | USA |
SWM | Olympics | 1984 | 0–0–1 1985 Tokyo bronze: 1500 m freestyle |
| Turlough O'Hare | CAN |
SWM | Olympics | 1988—1992 | 1–1–3 1987 Brisbane bronze: 4×200 m freestyle relay; 1989 Tokyo gold: 400 m freestyle, silver: 4×200 m freestyle relay, bronze: 200 m freestyle; 1991 Edmonton bronze: 4×200 m freestyle relay |
| Susie O'Neill | AUS |
SWM | Olympics / Administrator | 1992—2005 | 7–13–5 1991 Edmonton gold: 100 m butterfly, silver: 4×100 m medley relay, bronze: 100 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay; 1993 Kobe silver: 100 m freestyle, 100 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay; 1995 Atlanta gold: 100 m butterfly, 200 m butterfly, and 4×100 m medley relay, silver: 4×100 m freestyle relay and 4×200 m freestyle relay; 1997 Fukuoka gold: 200 m butterfly, silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay and 4×200 m freestyle relay; 1999 Sydney gold: 200 m freestyle and 200 m butterfly, silver: 100 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay |
| Yoshihiro Okumura | JPN |
SWM | Olympics | 2004—2008 | 0–1–0 2010 Irvine silver: 4×200 m freestyle relay |
| Nicolas Oliveira | BRA |
SWM | Olympics | 2008—2016 | 0–0–1 2014 Gold Coast bronze: 4×100 m freestyle relay |
| Jon Olsen | USA |
SWM | Olympics | 1992—1996 | 10–3–0 1989 Tokyo gold: 4×100 m freestyle relay and 4×200 m freestyle relay, silver: 200 m freestyle; 1991 Edmonton gold: 4×100 m freestyle relay and 4×200 m freestyle relay; 1993 Kobe gold: 50 m freestyle, 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay; 1995 Atlanta gold: 4×100 m freestyle relay, silver: 100 m freestyle and 4×200 m freestyle relay; 1997 Fukuoka gold: 4×100 m freestyle relay |
| Craig Oppel | USA |
SWM | Olympics | 1988 | 4–1–0 1985 Tokyo gold: 4×200 m freestyle relay; 1987 Brisbane gold: 200 m freestyle, 4×100 m freestyle relay, 4×200 m freestyle relay, silver: 100 m freestyle |
| Emily Overholt | CAN |
SWM | Olympics | 2016 | 0–0–1 2014 Gold Coast bronze: 4×200 m freestyle relay |
| Elli Overton | AUS |
SWM | Olympics | 1992—2000 | 1–0–3 1993 Kobe bronze: 200 m medley; 1995 Atlanta gold: 200 m medley, bronze: 400 m medley; 1999 Sydney bronze: 200 m medley |
| Jake Packard | AUS |
SWM | Olympics | 2016 | 1–1–2 2014 Gold Coast bronze: 4×100 m medley relay; 2018 Tokyo gold: 4×100 m medley mixed relay, silver: 100 m breaststroke, bronze: 4×100 m medley relay |
| Kylie Palmer | AUS |
SWM | Olympics | 2008—2012 | 0–1–0 2010 Irvine silver: 4×200 m freestyle relay |
| Eddie Parenti | CAN |
SWM | Olympics | 1992—1996 | 0–1–2 1989 Tokyo silver: 4×200 m freestyle relay; 1991 Edmonton bronze: 4×200 m freestyle relay; 1997 Fukuoka bronze: 4×100 m medley relay |
| Park Tae-Hwan | KOR |
SWM | Olympics | 2004—2016 | 4–2–0 2006 Victoria gold: 400 m freestyle and 1500 m freestyle, silver: 200 m freestyle; 2010 Irvine gold: 400 m freestyle, silver: 200 m freestyle; 2014 Gold Coast gold: 400 m freestyle |
| Georgina Parkes | AUS |
SWM | Olympics | 1980—1984 | 0–3–1 1985 Tokyo silver: 200 m backstroke, 4×200 m freestyle relay, and 4×100 m medley relay, bronze: 100 m backstroke |
| Terence Parkin | RSA |
SWM | Olympics | 2000—2004 | 0–0–1 1999 Sydney bronze: 200 m breaststroke |
| Michelle Pearson | AUS |
SWM | Olympics | 1980—1984 | 1–2–1 1985 Tokyo gold: 200 m medley, silver: 4×100 m freestyle relay and 4×200 m freestyle relay, bronze: 200 m freestyle |
| Todd Pearson | AUS |
SWM | Olympics | 2000—2004 | 1–0–0 2002 Yokohama gold: 4×100 m freestyle relay |
| Aaron Peirsol | USA |
SWM | Olympics | 2000—2008 | 8–0–0 2002 Yokohama gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay; 2006 Victoria gold: 100 m backstroke, 200 m backstroke, and 4×100 m medley relay; 2010 Irvine gold: 100 m backstroke and 4×100 m medley relay |
| Thiago Pereira | BRA |
SWM | Olympics | 2004—2016 | 0–0–3 2006 Victoria bronze: 400 m medley; 2010 Irvine bronze: 200 m medley and 400 m medley |
| Kieren Perkins | AUS |
SWM | Olympics / Closing Flagbearer | 1992—2000 | 7–3–0 1991 Edmonton gold: 400 m freestyle, 800 m freestyle, and 1500 m freestyle, silver: 4×200 m freestyle relay; 1993 Kobe gold: 400 m freestyle, 800 m freestyle, and 1500 m freestyle, silver: 4×200 m freestyle relay; 1995 Atlanta gold: 1500 m freestyle, silver: 800 m freestyle |
| Michael Phelps | USA |
SWM | Olympics / Opening Flagbearer | 2000—2016 | 16–5–0 2002 Yokohama gold: 200 m medley, 400 m medley, and 4×100 m medley relay, silver: 200 m butterfly and 4×200 m freestyle relay; 2006 Victoria gold: 200 m butterfly, 200 m medley, 400 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 200 m backstroke; 2010 Irvine gold: 100 m butterfly, 200 m butterfly, 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay; 2014 Gold Coast gold: 100 m butterfly, 4×200 m freestyle relay, and 4×100 m medley relay, silver: 200 m medley and 4×100 m freestyle relay |
| Leiston Pickett | AUS |
SWM | Olympics | 2012 | 0–1–0 2010 Irvine silver: 50 m breaststroke |
| Sydney Pickrem | CAN |
SWM | Olympics | 2016—2024 | 0–1–0 2018 Tokyo silver: 200 m medley |
| Blake Pieroni | USA |
SWM | Olympics | 2016—2024 | 1–0–0 2018 Tokyo gold: 4×200 m freestyle relay |
| Annamay Pierse | CAN |
SWM | Olympics | 2008 | 0–0–1 2010 Irvine bronze: 200 m breaststroke |
| Deane Pieters | AUS |
SWM | Olympics | 1992 | 0–2–0 1991 Edmonton silver: 4×200 m freestyle relay; 1993 Kobe silver: 4×200 m freestyle relay |
| Adam Pine | AUS |
SWM | Olympics | 2000—2008 | 0–0–1 1995 Atlanta bronze: 100 m butterfly |
| Jim Piper | AUS |
SWM | Olympics | 2004 | 0–2–1 2002 Yokohama silver: 200 m breaststroke and 4×100 m medley relay, bronze: 100 m breaststroke |
| Jason Plummer | AUS |
SWM | Olympics | 1988 | 0–0–2 1987 Brisbane bronze: 400 m freestyle and 1500 m freestyle |
| Sarah Poewe | GER RSA |
SWM | Olympics | 2000—2012 | 0–0–1 1999 Sydney bronze: 200 m breaststroke (competed for South Africa) |
| Claudia Poll | CRC |
SWM | Olympics | 1996—2004 | 3–2–3 1993 Kobe gold: 200 m freestyle, silver: 400 m freestyle, bronze: 800 m freestyle; 1995 Atlanta bronze: 200 m freestyle; 1997 Fukuoka gold: 200 m freestyle and 400 m freestyle, silver: 800 m freestyle; 1999 Sydney bronze: 400 m freestyle |
| Sylvia Poll | CRC |
SWM | Olympics | 1988—1992 | 0–0–1 1991 Edmonton bronze: 100 m backstroke |
| Tom Ponting | CAN |
SWM | Olympics | 1984—1992 | 0–3–1 1985 Tokyo silver: 4×100 m freestyle relay, bronze: 200 m medley; 1987 Brisbane silver: 200 m butterfly and 4×100 m medley relay |
| Victoria Poon | CAN |
SWM | Olympics | 2008—2012 | 0–1–2 2006 Victoria silver: 4×100 m freestyle relay; 2010 Irvine bronze: 50 m freestyle and 4×100 m freestyle relay |
| Jarrod Poort | AUS |
OWS/SWM | Olympics | 2012—2016 | 0–1–0 2014 Gold Coast silver: 10 km |
| Ricardo Prado | BRA |
SWM | Olympics | 1980—1984 | 1–0–1 1985 Tokyo gold: 400 m medley, bronze: 200 m butterfly |
| Troy Prinsloo | RSA |
OWS/SWM | Olympics | 2008—2012 | 0–1–0 2006 Victoria silver: 800 m freestyle |
| Donna Procter | AUS |
SWM | Olympics | 1988 | 0–1–5 1985 Tokyo silver: 4×200 m freestyle relay, bronze: 400 m freestyle; 1987 Brisbane bronze: 800 m freestyle and 400 m medley; 1989 Tokyo bronze: 400 m medley; 1991 Edmonton bronze: 800 m freestyle |
| Qian Hong | CHN |
SWM | Olympics | 1988—1992 | 2–2–2 1987 Brisbane gold: 100 m butterfly, silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay; 1989 Tokyo gold: 100 m butterfly, silver: 4×100 m medley relay; 1989 Tokyo bronze: 4×100 m freestyle relay |
| Kristine Quance | USA |
SWM | Olympics | 1996 | 4–2–1 1991 Edmonton gold: 200 m breaststroke, silver: 400 m medley; 1993 Kobe gold: 400 m medley, bronze: 200 m breaststroke; 1997 Fukuoka gold: 200 m medley and 400 m medley, silver: 200 m butterfly |
| Megan Quann-Jendrick | USA |
SWM | Olympics | 2000—2008 | 1–2–0 1999 Sydney gold: 4×100 m medley relay, silver: 100 m breaststroke and 100 m breaststroke (competed as Megan Quann) |
| Kane Radford | NZL |
OWS | Olympics | 2016 | 0–0–1 2014 Gold Coast bronze: 10 km |
| Trina Radke | USA |
SWM | Olympics | 1988 | 2–0–0 1985 Tokyo gold: 4×200 m freestyle relay; 1987 Brisbane gold: 4×200 m freestyle relay |
| Pam Rai | CAN |
SWM | Olympics | 1984 | 0–0–1 1985 Tokyo bronze: 4×100 m freestyle relay |
| Shayne Reese | AUS |
SWM | Olympics | 2004—2008 | 0–1–1 2006 Victoria silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay |
| Jennifer Reilly | AUS |
SWM | Olympics | 2000—2004 | 1–0–0 2002 Yokohama gold: 400 m medley |
| Steph Rice | AUS |
SWM | Olympics / Closing Flagbearer | 2008—2012 | 0–0–2 2006 Victoria bronze: 200 m medley and 400 m medley |