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.
Fabio Scozzoli is an Italian swimmer. At the 2012 World Short Course Championships, he won the gold medal in the 100 metre breaststroke. He is the 2022 Mediterranean champion in the 50 metre breaststroke.
Adam George Peaty is an English competitive swimmer who specialises in the breaststroke. He won the gold medal in the 100 metre breaststroke at the 2016 Summer Olympics, the first by a male British swimmer in 24 years, and retained the title at the 2020 Summer Olympics in 2021, the first British swimmer ever to retain an Olympic title. He is also an eight-time World Champion, a sixteen-time European Champion and a four-time Commonwealth Champion. According to FINA itself, Peaty is widely regarded as the dominant breaststroke swimmer of his era, and the most dominant sprint breaststroke swimmer of all time.
Anton Mikhailovich Chupkov is a Russian competitive swimmer. He is the European record holder in the long course 200 metre breaststroke and the Russian record holder in the long course 100 metre breaststroke. He formerly held the world record in the long course 200 metre breaststroke. At the 2015 European Games he won four gold medals in individual and relay events. He won the bronze medal in the 200 metre breaststroke at the 2016 Summer Olympics. He won the gold medal in the 200 metre breaststroke at the 2017 and 2019 World Aquatics Championships.
Margherita Panziera is an Italian swimmer. She competed at the 2020 Summer Olympics, in 100 m backstroke and 200 m backstroke. She is also a three-time European Champion in the 200 metre backstroke, winning in 2018, 2021, and 2022.
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.
Tatjana Schoenmaker is a South African swimmer specialising in breaststroke events. She is the former world record holder in the long course 200-metre breaststroke and is the African record holder in the long course and short course 100-metre breaststroke as well as the short course 200-metre breaststroke. She is a former African record holder in the long course 50-metre breaststroke and former South African record holder in the short course 50-metre breaststroke. She won the gold medal and set the world record in the 200-metre breaststroke and also won the silver medal in the 100-metre breaststroke at the 2020 Olympic Games.
Alessandro Miressi is an Italian swimmer. He is a world record holder in the short course 4×100 metre freestyle relay and an Italian record holder in the long course and short course 100 metre freestyle. In the long course 100 metre freestyle, he was 2018 European champion, 2020 European Championships silver medalist, and 2022 European Championships bronze medalist. In the short course 100 metre freestyle, he was 2021 World champion, 2019 and 2021 European Championships silver medalist, and 2022 World Championships bronze medalist.
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.
Michael Houlie is a South African swimmer. He competed in the men's 100 metre breaststroke at the 2019 World Aquatics Championships. In 2019, he represented South Africa at the 2019 African Games held in Rabat, Morocco. He also competed in the men's 100 metre breaststroke event at the 2020 Summer Olympics.
Benedetta Pilato is an Italian swimmer. She is the world record holder in the long course 50 metre breaststroke. She is the European champion in the 50 metre breaststroke in 2021 and the 100 metre breaststroke in 2022 as well as the silver medalist in the 50 metre breaststroke in 2022. In 2021, she won a silver medal in the 50 metre breaststroke at the 2021 World Short Course Championships. She is the world champion in the 100 metre breaststroke and the silver medal in the 50 metre breaststroke at the 2022 World Aquatics Championships.
Thomas Ceccon is an Italian swimmer. He is a world record holder in the long course 100 metre backstroke and the short course 4×100 metre freestyle relay. He is also the Italian record holder in the long course 50 metre backstroke and 50 metre butterfly. He is the 2022 World champion in the 100 metre backstroke and 2022 European champion in the 100 metre backstroke and 50 metre butterfly. In the 100 metre individual medley, he won the gold medal at the 2022 World Short Course Championships and the bronze medal at the 2021 World Short Course Championships. At the 2020 Summer Olympics, he won a silver medal in 4×100 metre freestyle relay, a bronze medal in the 4×100 metre medley relay, placed fourth in the 100 metre bacsktroke, and placed twelfth in the 100 metre freestyle.
Evgeniia Igorevna Chikunova is a Russian swimmer. She competed in the women's 100 metre breaststroke, 200 metre breaststroke, and 4 × 100 metre medley relay at the 2020 Summer Olympics.
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.
Simone Cerasuolo is an Italian competitive swimmer. He is the world junior record holder in the short course 50 metre and 100 metre breaststroke events. In the 50 metre breaststroke, he won a gold medal at the 2021 European Junior Championships, the silver medal at the 2022 European Aquatics Championships, the bronze medal at the 2022 World Short Course Championships, and placed fifth at the 2022 World Aquatics Championships. In the 100 metre breaststroke, he won the bronze medal at the 2021 European Junior Championships and placed sixth in the final at the 2022 World Short Course Championships.
Vladislav Gerasimenko is a Russian competitive swimmer. He is a world junior record holder in the long course 4×100 metre medley relay, swimming a 59.53 for the breaststroke portion of the relay. He is a four-time medalist at the 2018 Summer Youth Olympics and a five-time medalist at the World Junior Swimming Championships, spanning breaststroke and freestyle disciplines. He competed at the 2021 European Short Course Swimming Championships, placing sixteenth in the preliminaries of the 50 metre breaststroke.
Alessandro Pinzuti is an Italian competitive swimmer. He won a gold medal in the 4×100 metre medley relay and the bronze medal in the 100 metre breaststroke at the 2022 Mediterranean Games. At the 2020 European Aquatics Championships, he won a bronze medal as part of the 4×100 metre medley relay, placed seventh in the 100 metre breaststroke and eighth in the 50 metre breaststroke. At the junior level, he won silver medals in the 50 metre breaststroke at the 2017 World Junior Championships and the 2017 European Junior Championships as well as a bronze medal in the 100 metre breaststroke at the 2017 European Junior Championships.
Kirill Strelnikov is a Russian competitive swimmer. He won a gold medal in the 4×50 metre medley relay at the 2021 World Short Course Championships and the 4×100 metre medley relay at the 2013 World University Games, swimming the breaststroke leg of both relays in the final. At the 2021 European Short Course Championships he won a bronze medal in the 4×50 metre mixed medley relay, swimming the breaststroke leg of the relay in the preliminaries.
Lara van Niekerk is a South African competitive swimmer. She is the current African, Commonwealth, and South African record holder in the long course 50-metre breaststroke and the African and South African record holder in the short course 50-metre breaststroke. She won gold medals in the 50-metre breaststroke at the 2018 African Swimming Championships and the 2022 Commonwealth Games as well as a silver medal at the 2022 World Short Course Championships and the bronze medal at the 2022 World Aquatics Championships in the same event. In the 100-metre breaststroke, she won gold medals at the 2018 African Swimming Championships and the 2022 Commonwealth Games.
Italy 
