The FINA World Junior Swimming Championships is a swimming championship event organized by FINA for girls aged 14–17 and boys aged 15–18 on 31 December of the year of the competition. It is held biennially, and has been held since 2006.
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 holds the world record in the short course 400-metre individual medley and formerly held the world record in the short course 200-metre butterfly. He won the gold medal in the 400-metre individual medley at the 2012, 2014, 2016, 2018, 2021, and 2022 world short course championships, as well as at the 2013, 2015, and 2019 world long course championships.
Nicolas Fink is an American five-time world champion in breaststroke events. He is a world record holder in the short course 4×100 meter medley relay and 4×50 meter mixed medley relay. He is the Americas record holder in the short course 50 meter breaststroke, 100 meter breaststroke, and 200 meter breaststroke as well as the American record holder in the long course 50 meter breaststroke. In the 50 meter breaststroke, he won the World Short Course titles in 2021 and 2022 and World Long Course title in 2022. In the 100 meter breaststroke, he is the 2022 World Short Course gold medalist. In the 200 meter breaststroke, he is the 2021 World Short Course gold medalist.
Ryan Held is an American freestyle swimmer who specializes in the sprint events, and is currently sponsored by Arena. He holds the U.S. Open record in the long course 100 meter freestyle and three world records in short course relay events. At the 2016 Summer Olympics he won a gold medal in the 4×100 meter freestyle relay, swimming in both the prelims and the final of the event. In 2021, he won silver medals in the 50 meter freestyle and the 100 meter freestyle at the 2021 World Short Course Championships. At his first FINA World Aquatics Championships, the 2022 World Aquatics Championships, he won a gold medal in the 4×100 meter freestyle relay.
Leonardo Coelho Santos is a Brazilian swimmer.
Joseph Hunter Armstrong is an American swimmer. He is the world record holder in the long course 50 meter backstroke. At the 2022 World Aquatics Championships, he won a silver medal in the 50 meter backstroke, a bronze medal in the 100 meter backstroke, gold medals in the 4×100 meter freestyle relay and 4×100 meter mixed medley relay, and a silver medal in the 4×100 meter medley relay. At the 2020 Summer Olympics, he won a gold medal in the 4×100 meter medley relay, swimming backstroke in the preliminaries, and placed ninth in the 100 meter backstroke.
Shaine Casas is an American professional swimmer. He is an Americas record holder in the short course 4×50 meter medley relay, swimming the butterfly leg of the relay. At the 2021 World Short Course Championships, he won the gold medal in the 100-meter backstroke, a silver medal in the 200-meter backstroke, and placed seventh in the 50-meter backstroke. In 2022, at the year's World Aquatics Championships, he won the bronze medal in the 200-metre backstroke. Later in the year, at the 2022 World Short Course Championships, he won the silver medal in the 200-metre backstroke and placed fourth in the finals of the 100-meter individual medley and 200-meter individual medley.
Michele Lamberti is a competitive Italian swimmer. He is a former world record holder in the short course 4×50-metre medley relay. He currently holds the Italian record in the short course 50-metre backstroke. At the 2021 European Short Course Championships he won a gold medal and set a world record in the 4×50-metre medley relay, won three silver medals, one in the 50-metre backstroke, one in the 100-metre butterfly, and one in the 4×50-metre mixed medley relay, and won a bronze medal in the 200-metre backstroke. At the 2021 World Short Course Championships he won two bronze medals in relay events, swimming in the preliminaries for each relay.
Lorenzo Mora is a competitive Italian swimmer. He is a world record holder in the short course 4×50 metre medley relay. He is the Italian record holder in the short course 100 metre backstroke and 200 metre backstroke. In the 50 metre backstroke, he won the silver medal at the 2021 World Short Course Championships and the bronze medal at the 2022 Mediterranean Games. In the 100 metre backstroke, he won the silver medal at each the 2022 World Short Course Championships and the 2022 Mediterranean Games. In the 200 metre backstroke, he won the bronze medal at the 2022 World Short Course Championships, the silver medal at the 2021 European Short Course Championships, and the gold medal at the 2022 Mediterranean Games.
Trenton Jeffrey Julian is an American competitive swimmer. He is a world record holder in the short course 4×200 meter freestyle relay and 4×100 meter medley relay. He won a gold medal in the 4×200 meter freestyle relay at the 2019 World University Games. He followed this win up with gold medals in the 4×200 meter freestyle relay at the 2021 World Short Course Championships, 2022 World Aquatic Championships, and 2022 World Short Course Championships. In the 4×100 meter medley relay, he won a world title and gold medal at the 2022 World Short Course Championships, swimming butterfly on each the prelims and finals relay.
The Women's 100 metre individual medley competition of the 2022 FINA World Swimming Championships was held on 15 and 16 December 2022.
