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.
István Hunor Mate is an Austrian swimmer, who specialized in breaststroke events. He is also a twenty-two time Austrian national champion, five-time Austrian national record holder, and a current member of Wolfsberger SV in Vienna, Austria.
Dominik Koll is an Austrian former swimmer, who specialized in freestyle events. He is a two-time Olympian, a 41-time national titleholder, and a 5-time long and short course Austrian record holder. Koll is a member of the swimming team for SK VÖEST Linz. He won a bronze medal, as a member of the Austrian swimming team, at the 2008 European Championships in Eindhoven, Netherlands. Koll is one of few LGBT Olympians to come out as gay.
Laurent Carnol is a Luxembourgish swimmer, who specialized in breaststroke events. Carnol set national records of 1:01.39 and 2:09.78 in the men's breaststroke at the 2010 European Aquatics Championships in Budapest, Hungary, and at the 2012 European Long Course Meet in Luxembourg City, respectively. Carnol is also a member of SC Le Dauphin Ettelbruck under his personal coach Ian Armiger, and currently, a chemistry student at Loughborough University in Leicestershire, England.
Paulius Viktoravičius is a Lithuanian swimmer, who specialized in sprint and relay freestyle events. He is a multiple-time Lithuanian swimming champion and record holder in both the freestyle and medley relay events.
Rimvydas Šalčius is a Lithuanian former swimmer, who specialized in butterfly events. He is a multiple-time Lithuanian champion, and a two-time national record holder in both the men's butterfly and medley relay events. He also set a junior record time of 53.25 seconds by winning the gold medal in the men's 100 m butterfly at the 2003 European Championships in Glasgow, Scotland.
Raminta Dvariškytė is a Lithuanian swimmer who specialized in breaststroke events. She represented her nation Lithuania at the 2008 Summer Olympics, and has claimed multiple Lithuanian championship titles and two national records in both the breaststroke and medley relay events.
Valentin "Vali" Preda is a Romanian swimmer, who specialized in breaststroke events. He represented his nation Romania at the 2008 Summer Olympics, and has also claimed multiple Romanian national records in the breaststroke, and medley relays. Preda is a former member of the swimming team for the Louisville Cardinals, and a graduate of exercise science at the University of Louisville in Louisville, Kentucky.
Danil Haustov is an Estonian former swimmer, who specialized in sprint freestyle events. He set an Estonian record of 1:27.06, as a relay swimmer, in the 4×50 m freestyle at the 2008 European Short Course Swimming Championships in Rijeka, Croatia. Haustov is also a member of Kohtla-Järve Water Sport Club in Tallinn, and is coached and trained by Aleksandr Abel.
Nina Sovinek is a Slovenian swimmer, who specialized in sprint freestyle events. She represented her nation Slovenia at the 2008 Summer Olympics, and also served as a member of the Slovenian Olympic Swimming Club under head coach Aleš Poljak.
Tetyana Valentynivna Khala is a Ukrainian swimmer, who specialized in butterfly events. She represented her nation Ukraine at the 2008 Summer Olympics, finishing in the top 30 of the women's 200 m butterfly.
Serhiy Mykolaiovych Advena is a Ukrainian former swimmer who specializes in the freestyle and butterfly swimming styles. He is a two-time Olympian, and a multiple-time Ukrainian record holder in both 100 and 200 m butterfly. He also helped out the Ukrainian team to upset their American rivals and claim the medley relay title (3:38.49) at the 2005 Summer Universiade in Izmir, Turkey.
Łukasz Waldemar Gąsior is a Polish swimmer, who specialized in middle-distance freestyle events. He represented his nation Poland at the 2008 Summer Olympics, and has won a career total of three medals in a major international competition, spanning the 2004 European Junior Swimming Championships in Lisbon, Portugal.
Michal Rubáček is a Czech swimmer, who specialized in butterfly events. He is a two-time Olympian, and a multiple-time Czech national record holder for the butterfly events.
Diana Duarte Gomes is a Portuguese swimmer, who specialized in breaststroke events. She is a two-time Olympian and a multiple-time Portuguese record holder for the long and short course breaststroke events. She also won three medals in the same category at the 2005 European Junior Swimming Championships in Budapest, Hungary.
Evgeny Mikhailovich Rylov is a Russian competitive swimmer and Olympic champion specializing in backstroke events. He won three gold medals at the 2014 Summer Youth Olympics in Nanjing, and a bronze medal at his senior international debut at the 2015 World Championships in Kazan. He also won a bronze medal at the 2016 Summer Olympics in Rio de Janeiro and a gold medal at the 2017 World Championships in Budapest, both were in the 200 metre backstroke event. In 2018, at the 2018 World Short Course Championships, he won gold medals in the 200 metre backstroke and 50 metre backstroke. At the 2019 World Championships, he won a gold medal in the 200 metre backstroke, silver medal in the 100 metre backstroke, and silver medal in the 50 metre backstroke. He won the gold medal in the 100 metre backstroke and 200 metre backstroke at the 2020 Summer Olympics in Tokyo.
Kristóf Milák is a Hungarian swimmer. He is the current holder of the world record in the long course 200 metre butterfly and the European record in the long course 100 metre butterfly. At his first Olympic Games, the 2020 Summer Olympics, he won a gold medal in the 200 metre butterfly and a silver medal in the 100 metre butterfly. He has also won three gold medals and one silver at the World Aquatic Championships, as well as three gold medals at the European Aquatics Championships. He was the gold medalist in the 400 metre freestyle, 200 metre freestyle, and 200 metre butterfly events at the 2018 Summer Youth Olympics.
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.
Switzerland 
