Alvin Leonardo Harrison is an American former track and field athlete who competed in sprinting events. He won a gold medal in the 4 x 400 metres relay at both the 1996 and 2000 Summer Olympics and a silver medal in the 400 metres at the 2000 Summer Olympics.
Antonio McKay Sr. is a former track and field athlete who specialized in the 400 meters.
Sanjay Claude Ayre is a retired Jamaican sprinter who specialized in the 400 meters. Ayre won a silver medal at the 2000 Summer Olympic Games. Ayre is a 2004 IAAF World Indoor Championship Gold medalist and a three-time World Outdoor Championship medalist.
John Pitann Kinsella is an American former competition swimmer for Indiana University, a 1968 Olympic silver, and 1972 Olympic gold medalist, and a former world record-holder in multiple events.
Peter William Vanderkaay is an American former competition swimmer who specialized in middle-distance freestyle events and is a four-time Olympic medalist. He was a member of the United States Olympic team in 2004, 2008, and 2012, and won bronze medals in the 200-meter freestyle at the 2008 Summer Olympics and the 400-meter freestyle at the 2012 Summer Olympics.
Ford Hiroshi Konno is a Japanese–American former competition swimmer, two-time Olympic champion, and former world record-holder in three events.
Robert Steven Genter is an American former competition swimmer and three-time Olympic medalist. He was a freestyle specialist who earned a gold medal as a member of the winning U.S. team in the 4×200-meter freestyle relay at the 1972 Summer Olympics in Munich, Germany. He also won silver medals at the Munich Olympics in the 200-meter and 400-meter freestyle events.
George Thomas Breen was an American Hall of Fame competition swimmer, four-time Olympic medalist in freestyle events, and world record-holder in three events. After retiring as a swimmer, he became a swim coach at the University of Pennsylvania and later the Jersey Wahoos Swim Club.
James Price McLane Jr. was an American competition swimmer, three-time Olympic champion, and a world record-holder.
Richard James DeMont is an American former competition swimmer, world champion, and former world record-holder in multiple events. DeMont is often remembered for the controversy arising from his disqualification at the 1972 Summer Olympics because he tested positive for a prohibited substance present in his prescription asthma medication.
Gergő Szabolcs Kis is a Hungarian freestyle swimmer.
Lawrence Bruce Hayes is an American former competition swimmer best known for anchoring the U.S. men's 4×200-meter freestyle relay team that won the gold medal at the 1984 Summer Olympics in Los Angeles.
Paul Biedermann is a German retired competitive swimmer, a 200 and 400 metre freestyle long course world champion. He holds the long course and short course world records in the 200 meters freestyle, and the long course world record in the 400 meters freestyle.
Richard John Howell was an American competition swimmer who represented the United States at the 1924 Summer Olympics in Paris.
Joel Ladd Thomas is an American former competition swimmer and Water Polo player for the University of California at Berkeley and a 1992 Olympic gold medalist in the 4x100-meter freestyle relay.
Conor James Dwyer is a former American competition swimmer and Olympic gold medalist. He competed in freestyle and medley events, and won a gold medal as a member of the winning U.S. 4×200-meter freestyle relay team at the 2012 Summer Olympics. In total, he has won seventeen medals in major international competitions: nine gold, six silver, and two bronze spanning the Summer Olympics, the FINA World Championships, the Pan Pacific Championships, and the Pan American Games. Dwyer placed second at the 2016 US Olympic Swimming Trials in the 400m freestyle.
Tony McQuay is an American track and field athlete who specializes in the 400 meters. He is a member of the 2012 and 2016 United States Olympic teams, winning a silver medal in the 4 × 400 m relay in 2012 and a gold in the same event in 2016. He is also a two time World Champion in this event.
Connor Lee Jaeger is a former American competition swimmer who specializes in distance freestyle events. Jaeger attended the University of Michigan where he was a three-time All-American. He was a member of the 2012 United States Olympic team, placing sixth in the 1500 metre freestyle at those Olympics, as well as the 2016 United States Olympic team, where he earned a silver medal in the same event. He currently holds the American record in the short course 1500 metre freestyle.
Archfell Musango is a Zambian Olympic middle-distance runner. He represented his country in the men's 1500 meters and the men's 800 meters at the 1984 Summer Olympics, as well as the men's 800 metres, men's 1500 metres, and men's 4 x 400 metres relay at the 1980 Summer Olympics.
George Branche is a Sierra Leonean Olympic middle-distance runner. He represented his country in the men's 1500 meters, men's 800 meters, and men's 4 x 400 metres relay at the 1980 Summer Olympics. His time was a 4:03.84 in the 1500, a 1:54.60 in the 800 heats, and a 3:25.00 in the relay.
South Korea 
