The World Aquatics Junior Swimming Championships is an international swimming championship event organized biennially by World Aquatics for girls and boys who are aged 14–18 on the 31st December of the year of the competition. It is usually held on odd years. Prior to 2023, the event was known as the FINA World Junior Swimming Championships and was open to girls who were aged 14–17 and boys who were aged 15–18 on the 31st of December of the year of the competition.
Yuliya Andreyevna Yefimova is a Russian competitive swimmer. She is the Russian record holder in the 200 metre individual medley, 50 metre breaststroke, 100 metre breaststroke, and 200 metre breaststroke. After making her Olympic debut in 2008, she went on to win the bronze medal in the 200 metre breaststroke in 2012, and silver medals in the 100 metre and 200 metre breaststroke in 2016. She is a six-time World Champion, winning the 50 metre breaststroke in 2009 and 2013, the 100 metre breaststroke in 2015, and the 200 metre breaststroke in 2013, 2017, and 2019. In 2019, she became the first woman to win the 200 metre breaststroke at a FINA World Aquatics Championships three times. She is a former world record holder in the long course 50 metre breaststroke. She has won 109 medals, including 48 gold medals, at Swimming World Cups.
Alia Shanee Atkinson, OD is a Jamaican five-time Olympian and a former competitive swimmer whose international competition career spanned 19 years, 2003 to 2021 inclusive, at the senior level. At short course World Swimming Championships, she is a ten-time medalist in individual events, including four gold medals, four silver medals, and two bronze medals. She won a total of 124 medals, of which 74 were gold medals, at Swimming World Cup circuits over the course of her career. She won 14 total medals in individual events, 11 gold, 1 silver, and 2 bronze, from her first three Central American and Caribbean Games, in 2006, 2010, and 2018.
Felipe Alves França da Silva is a Brazilian breaststroke swimmer, who competed for his country in three Olympic Games.
The Men's 200 Breaststroke at the 10th FINA World Swimming Championships (25m) was swum 17 December. 57 individuals swam in the Preliminary heats in the morning, with the top-8 finishers advancing to the Final in the evening.
The swimming portion of the 2011 FINA World Championships was held July 24–31 at the Shanghai Oriental Sports Center in Shanghai, China. Swimming is one of five aquatic disciplines at the championships.
The men's 200 metre freestyle event at the 11th FINA World Swimming Championships (25m) took place 12 December 2012 at the Sinan Erdem Dome.
The women's 50 metre breaststroke event at the 11th FINA World Swimming Championships (25m) took place 12 – 13 December 2012 at the Sinan Erdem Dome.
The men's 100 metre breaststroke event at the 11th FINA World Swimming Championships (25m) took place 12 – 13 December 2012 at the Sinan Erdem Dome.
The men's 4x200 metre freestyle relay event at the 11th FINA World Swimming Championships (25m) took place 13 December 2012 at the Sinan Erdem Dome.
The women's 100 metre breaststroke event at the 11th FINA World Swimming Championships (25m) took place 14 – 15 December 2012 at the Sinan Erdem Dome.
The women's 200 metre breaststroke event at the 11th FINA World Swimming Championships (25m) took place 16 December 2012 at the Sinan Erdem Dome.
The men's 200 metre individual medley event at the 11th FINA World Swimming Championships (25m) took place 14 December 2012 at the Sinan Erdem Dome. The event was won by American Ryan Lochte. In the final, Lochte broke his own world record of 1:50.08 set in 2010 with a time of 1:49.63, thus becoming the first individual under 1:50 in the event.
The men's 50 metre breaststroke event at the 11th FINA World Swimming Championships (25m) took place 15 – 16 December 2012 at the Sinan Erdem Dome.
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.
Ilya Syarheyevich Shymanovich is a Belarusian swimmer. He is the world record holder in the short course 100 metre breaststroke and a former world record holder in the short course 50 metre breaststroke. At the 2018 World Championships he won two silver medals, one each in the 100 metre breaststroke and the 50 metre breaststroke. He won two gold medals, one in the 50 metre breaststroke and one in the 200 metre breaststroke, and a silver medal, in the 100 metre breaststroke, at the 2021 European Short Course Championships. At the 2021 World Short Course Championships he won the gold medal in the 100 metre breaststroke.
Nicolò Martinenghi is an Italian swimmer. He is a two-time world record holder in the 4×50 metre medley relay, swimming breaststroke on both relays. He is the Italian record holder in the 50 metre breaststroke and 100 metre breaststroke.
