The women's 400 metre freestyle event at the 1992 Summer Olympics took place on 28 July at the Piscines Bernat Picornell in Barcelona, Spain.
The women's 400 metre individual medley event at the 1992 Summer Olympics took place on 26 July 1992 at the Piscines Bernat Picornell in Barcelona, Spain.
The men's 400 metre individual medley event at the 1992 Summer Olympics took place on 27 July at the Piscines Bernat Picornell in Barcelona, Spain.
The men's 400 metre freestyle event at the 1992 Summer Olympics took place on 29 July at the Piscines Bernat Picornell in Barcelona, Spain.
Sarah Lucy Hardcastle, also known by her married name Sarah Thomas, is a British former competitive swimmer who represented Great Britain in the Olympics, world championships and European championships, and swam for England in the Commonwealth Games. She specialised in the 400- and 800-metre freestyle, and also competed in medley races. Hardcastle won multiple major championship medals over the course of her career, including individual silver and bronze medals at the 1984 Summer Olympics at the age of 15 and two individual gold medals at the 1986 Commonwealth Games. She retired from the sport in 1986 but returned in 1993, winning gold at the World Short Course Championships for the 800-metre freestyle in 1995 and reaching the final of the same event at the 1996 Summer Olympics.
Jennifer Louise Reilly is an Australian medley swimmer.
Mireia Belmonte García is a Spanish Olympic, world, and European champion swimmer. She is the world record holder in the short course 200 metre butterfly and 400 metre individual medley. Formerly, she held the world record in the short course 400 metre freestyle, 800 metre freestyle, and 1500 metre freestyle. She was the first Spanish woman to win a gold medal in swimming at an Olympic Games and is widely considered to be the greatest Spanish swimmer of all time.
Lauren Marie Boyle is a former competitive swimmer from New Zealand. She has competed at three Commonwealth Games and three Olympic Games.
Blair Catherine Evans is an Australian middle distance freestyle swimmer.
Ivanka Moralieva is a Bulgarian former swimmer, who specialized in long-distance freestyle events and open water marathon. Since 2001, she holds a Bulgarian record in the 1500 m freestyle from the World Championships in Fukuoka, Japan (16:55.53). She also won a bronze medal in the 25 km, as an open water swimmer, at the 2004 European Aquatics Championships in Madrid, Spain (4:41:21.2).
Ratapong "Nuk" Sirisanont is a Thai former swimmer, who specialized in breaststroke, but also competed in long-distance freestyle and individual medley. He is a four-time Olympian, a three-time Asian Games participant, and a seven-time SEA Games athlete (1991–2003). Regarded as Thailand's top swimmer, he has won a total of sixteen medals at the Southeast Asian Games since 1995, and six at the Asian Games, including two golds in the 200 and 400 m individual medley. At the 1996 Summer Olympics in Atlanta, Sirisanont became the first Thai swimmer to reach the final twice. Sirisanont is also one of three Southeast Asian swimmers, along with Malaysia's Alex Lim and Philippines' Miguel Molina, to train for the California Golden Bears in the United States, under head coach Nort Thornton.
Serghei Mariniuc is a Moldovan former swimmer, who specialized in individual medley events. He represented the Unified Team and the Republic of Moldova in all three editions of the Olympic Games since 1992, and later became a top eight finalist in two individual medleys throughout his Olympic career, emerging him as the nation's most prominent swimmer. He also captured a silver medal in the 400 m individual medley at the 1993 FINA Short Course World Championships in Palma de Mallorca, Spain. When he moved to the United States in 1993, Mariniuc trained professionally for the Santa Clara Swim Club in California until he announced his official retirement in late 2000.
Gabrielle Gonçalves Roncatto is a Brazilian swimmer. She finished 5th in the 400m freestyle at the 2024 Doha World Championships.
Emma Kay Robinson is a New Zealand swimmer who competed for her country at the 2016 Summer Olympics in Rio de Janeiro, Brazil. She competed in the women's 800 metre freestyle but did not qualify for the final.
Ariarne Elizabeth Titmus is an Australian swimmer. She is the reigning Olympic champion in the women's 400-metre freestyle, having won the event at the 2020 Summer Olympics and the 2024 Summer Olympics and the world record holder in the long course 200-metre freestyle and 400-metre freestyle events. In 2019 and 2020, she competed representing the Cali Condors in the International Swimming League.
Corinne Leclair is a Mauritian swimmer who represented her country at the 1992 Summer Olympics.
Robyn Claire Lamsam is a swimmer who represented Hong Kong at the 1992 Summer Olympics.
Clara Troner is a swimmer who represented Romania at the 1992 Summer Olympics and the 1996 Summer Olympics.
Summer Ann McIntosh is a Canadian competitive swimmer. She is a three-time Olympic champion, four-time World Aquatics champion, and two-time Commonwealth Games gold medallist. Noted for her strength in medley and butterfly events, she is the world record holder in the 400 metre individual medley, and also holds the Olympic and textile records in the 200 metre butterfly event, and the Olympic record in the 200 metre individual medley.
Kim Dewar is a former New Zealand swimmer. She won a bronze medal competing for her country at the 1982 Commonwealth Games.
New Zealand 