This is a listing of the history of the World Record in the swimming event: 100 Individual Medley. The event consists of one 25-meter lap of each stroke, and as such is only recognized in short course (25m) pools.
Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events. She is the current world record holder in the 50-meter freestyle, the 100-meter freestyle, the 50-meter butterfly, the 100-meter butterfly, and the 4×50-meter medley relay. She is a former world record holder in the 50-meter freestyle, 100-meter freestyle, 100-meter butterfly, and 200-meter freestyle. She is the first Swedish woman to win an Olympic gold medal in swimming. She won the Overall Swimming World Cup in 2017 and 2018 and she has won 10 individual World Championship gold medals. She currently represents Energy Standard in the International Swimming League.
The FINA/ARENA Swimming World Cup 2008 was held in October and November 2008. The meet scheduling matched that of the 2007 series, with all meets held short course metres (25 m) format.
Chad Guy Bertrand le Clos, OIS is a South African competitive swimmer who is an Olympic, World and Commonwealth Games champion as well as the Commonwealth record holder in the 50 and 100-metre butterfly. He is a former world record holder in the short course 100-metre butterfly and 200-metre butterfly. He won gold in the 200-metre butterfly and silver in the 100-metre butterfly in the 2012 Olympics in London, as well as silver medals in the 200-metre freestyle and 100-metre butterfly in the 2016 Summer Olympics. He also won five medals at the 2010 Summer Youth Olympics in Singapore. Le Clos has won the Overall Swimming World Cup four times: 2011, 2013, 2014, and 2017. In 2018, Le Clos claimed three gold medals in the 50m, 100m and 200m butterfly events at the Commonwealth Games. He also placed second in the 100m freestyle and third, along with teammates Cameron van der Burgh, Calvyn Justus and Brad Tandy, in the 4x100 medley relay. With another win in the 200m butterfly, Le Clos made history by becoming the first man to win three consecutive 200m butterfly Commonwealth titles.
Thomas Allen Shields is an American competitive swimmer. He is a two-time Olympian and the current American record-holder in the short course 50-meter and 200-meter butterfly events. At the 2016 Summer Olympics, Shields won a gold medal in the 4x100-meter medley relay for swimming the butterfly leg of the relay in the prelims. Later the same year he became the first American to swim faster than 44 seconds in the 100-yard butterfly, setting a new American record of 43.84. For the 2020 Summer Olympics, he swam the butterfly leg of the 4x100-meter medley relay in the prelims, and won a gold medal in the event when the finals relay finished in first place. At the Kazan stop of the 2021 FINA Swimming World Cup, Shields was the one and only swimmer representing the United States to compete in the international swimming competition, winning two gold medals and one silver medal in individual events. For the whole 2021 World Cup, Shields was the highest scoring American competitor and second-highest scoring male competitor.
Vladimir Viktorovich Morozov is a Russian competitive swimmer and Olympic medalist. He is the former world record holder in the short course 100-metre individual medley, the current textile world record, World Cup record and Russian national record holder in the 100-metre individual medley and 100-metre freestyle, and Russian record holder in the 50-metre freestyle. He also holds the European record for the 100-metre individual medley. Formerly he held the Russian national record in the 50-metre backstroke and the 50-metre butterfly, and held the European and Russian records in the 50-metre breaststroke.
Daiya Seto is a Japanese professional swimmer who specializes in individual medley, butterfly, breaststroke, and freestyle events. He won the gold medal in the 400-metre individual medley at the 2012, 2014, 2016, 2018, and 2021 world short course championships, as well as at the 2013, 2015, and 2019 world long course championships. Seto holds the world records in the short course 200-metre butterfly and the 400-metre individual medley.
Emma Jennifer McKeon, is an Australian competitive swimmer. She is a four-time world record holder, one current and three former, in the 4x100 metre freestyle relay. Her total career haul of 11 Olympic medals following the 2020 Olympic Games made her Australia's most decorated Olympian and included one gold medal from the 2016 Summer Olympics in Rio de Janeiro and four gold medals from the 2020 Summer Olympics in Tokyo. With four gold and three bronze medals she was the most decorated athlete across all sports at the 2020 Summer Olympics, and tied for the most medals won by a woman in a single Olympic Games. She has also won 17 medals, including four gold medals, at the World Aquatics Championships; and twelve medals, including eight gold, at the 2014 Glasgow and 2018 Gold Coast Commonwealth Games.
The 2015 FINA Swimming World Cup was a series of eight, two-day, long course swimming meets in eight different cities between August and November 2015. Airweave was the title sponsor for the series, with Omega serving as official timer. This was the first World Cup edition held in a long-course pool, allowing swimmers to prepare for next year's Olympics, which are also held in long course.
Kyle Chalmers, is an Australian competitive swimmer who specialises in freestyle and butterfly events. He is the world record holder in the short course 100 metre freestyle. He is also the Oceanian record and the Australian record holder in the short course 50 metre butterfly and 50 metre freestyle events. He was the 2016 Olympic champion in Rio de Janeiro in the 100 metre freestyle, winning the gold medal in world junior record time. He won his second Olympic medal in the 100 metre freestyle Olympic Games event at the 2020 Tokyo Olympics, winning the silver medal with a time of 47.08 in the final. He also won a silver medal at the 2019 World Aquatics Championships in Gwangju in the 100 metre freestyle.
Travis Mahoney is an Australian medley and backstroke swimmer. Winner of two relay medals at the 2012 World Short Course Championships, he is also part of the quartet that broke the world record in the short course mixed 4 × 50 metres freestyle relay. In 2016, he qualified for his first Olympic Games.
The 2017 FINA Swimming World Cup was a series of eight two-day meets in eight different cities between August and November 2017. This edition was held in the usual short-course format. Like the previous short course World Cup in 2016, 36 events were scheduled.
The 2018 FINA Swimming World Cup was a series of seven three-day meets in seven different cities between September and November 2018. This edition integrated meets held in 25m-pool as well as meets in 50m-pool.
The 2019 FINA Swimming World Cup was a series of seven three-day meets in seven different cities between August and November 2019. This edition was held in the long course format.
Paris-Chartres, France 
Berlin, Germany 
Moscow, Russia 
Beijing, China 
Dubai, United Arab Emirates 
Doha, Qatar 
Singapore 
Tokyo, Japan 
Hong Kong 
