Sergio Andrés Ferreyra is an Argentine former swimmer, who specialized in breaststroke events. He is a multiple-time Argentine record holder, and a two-time medalist in the breaststroke at the 2006 South American Games in Buenos Aires. He is also a member of Club Regatas Corrientes, and is coached and trained by Sergio Oscar Sainz.
Wickus Nienaber is a former Swazi swimmer, who specialized in breaststroke events. He is a four-time College Swimmer of the Year, a 2004 Atlantic Coast Conference champion, and owns at least 40 national age group records for the same stroke in Swaziland. He was a member of the swimming team for Florida State Seminoles under his coach Neil Harper, and a graduate with a Doctorate in computer science at the Florida State University in Tallahassee, Florida.
Raiko Pachel is an Estonian former swimmer, who specialized in breaststroke events. He is a single-time Olympian (2000), a double Baltic States swimming champion, and a former Estonian record holder in both 100 and 200 m breaststroke. Pachel is also a member of Keila Swim Club in Tallinn under head coach Tõnu Meijel.
Yang Shang-hsuan is a Taiwanese former swimmer, who specialized in breaststroke events. Yang competed only in the men's 100 m breaststroke, as a 16-year-old, at the 2000 Summer Olympics in Sydney. He achieved a FINA B-standard entry time of 1:04.16 from the National University Games in Taipei. He challenged seven other swimmers in heat five, including Israel's top favorite Tal Stricker. He raced to fourth place by more than half a second (0.50) behind winner Stricker in 1:04.54. Yang failed to advance into the semifinals, as he placed fortieth overall on the first day of prelims.
Valērijs "Val" Kalmikovs is a Latvian former swimmer, who specialized in breaststroke and individual medley events. He is a two-time Olympian and a top 16 finalist in the 200 m breaststroke on his Olympic debut in Atlanta (1996). He still holds a Latvian record in the 200 m breaststroke (2:16.21) that stood for more than a decade. While studying in the United States, Kalmikovs achieved a sixth-fastest of all time in the 200-yard breaststroke at the 2000 NCAA Men's Swimming and Diving Championships. He has also been named a three-time Big-12 Conference Champion and a nine-time All-American, as a member of the University of Nebraska swimming and diving team. Since his sporting career ended in 2004, Kalmikovs has extensively traveled across the United States and Europe, working as a swimming coach. On September 9. 2019 Val became the first Latvian to swim across The English Channel. It took him 11 hours and 13 minutes (6pm-5am) to successfully finish the challenge.
Vadim Tatarov is a Moldovan former swimmer, who specialized in breaststroke events. He is a two-time Olympian, and a former Moldovan record holder in both 100 and 200 m breaststroke.
Nikola Savčić is a Serbian former swimmer, who specialized in breaststroke events. He held numerous Yugoslav records in a sprint breaststroke double, and later represented Yugoslavia at the 2000 Summer Olympics. Savcic is also a resident athlete for PK April 11 in Belgrade, and a member of Yugoslav national swimming team since 1990.
Joe Kyong-fan is a South Korean former swimmer, who specialized in breaststroke events. Joe competed in a breaststroke double at the 2000 Summer Olympics in Sydney. He achieved FINA B-standards of 1:05.00 and 2:20.20 from the Dong-A Swimming Tournament in Ulsan. In the 100 m breaststroke, held on the first day of the Games, Joe challenged seven other swimmers in heat four, including two-time Olympians Valērijs Kalmikovs of Latvia and Arsenio López of Puerto Rico. He earned a fifth spot and forty-fifth overall by almost seven-tenths of a second (0.70) behind joint winners Kalmikovs and Lopez in 1:04.71, worthy enough for a personal best. Three days later, in the 200 m breaststroke, Joe placed twenty-ninth on the morning prelims. He set a new South Korean record of 2:19.16 to overhaul a 2:20 barrier and to touch the wall first in heat three.
Juan José Madrigal Pacheco is a Costa Rican former swimmer, who specialized in breaststroke events. He is a two-time Olympian, and a Costa Rican former record holder in the 50-, 100-, and 200-m breaststroke.
Matthew Kwok Hon-ming is a Hong Kong former swimmer, who specialized in breaststroke events. He is a single-time Olympian (2000), and a member of the University of Hawaiʻi swimming and diving team under head coach Sam Freas. He also holds numerous Hong Kong records in the 100 m breaststroke, and retains a dual resident status to compete internationally for his father's homeland. Kwok is also a younger brother of Olympic swimmer and Asian Games bronze medalist Mark Kwok.
Aleksandr Tkachev is a Russian-born Kyrgyzstani former swimmer, who specialized in breaststroke events. He collected a total of three medals, one gold and two silver, at the Universiade, and later represented his adopted nation Kyrgyzstan at the 2000 Summer Olympics.
Sylvain Faure is a Monegasque former swimmer, who specialized in breaststroke events. Faure competed only in the men's 100 m breaststroke at the 2000 Summer Olympics in Sydney. He received a Universality place from FINA, in an entry time of 1:06.50. He challenged six other swimmers in heat two, including two-time Olympians Juan José Madrigal of Costa Rica and Jean Luc Razakarivony of Madagascar. Faure pulled away from the field on the first length, but came up short to second place in a national record of 1:05.51, just 0.37 seconds behind leader Madrigal. Faure failed to advance into the semifinals, as he placed fifty-first overall on the first day of prelims.
Hjalti Guðmundsson is an Icelandic former swimmer, who specialized in breaststroke events. During his sporting career, Gudmundsson swam for the club Sundfélag Hafnarfjarðar, and later represented Iceland at the 2000 Summer Olympics.
Daniel Liew Yao Xiang is a former Singaporean swimmer, who specialized in breaststroke events. During his sporting career, Liew held a Singaporean record in the medley relay (3:51.16) from the 2001 Southeast Asian Games, and later represented Singapore at the 2000 Summer Olympics. He also played for the Chinese Swimming Club before entering the national team.
Krasimir Zahov is a Bulgarian former swimmer, who specialized in breaststroke events. He represented his nation Bulgaria at the 2000 Summer Olympics, and also held Bulgarian records in the 50 and 200 m breaststroke, until they were eventually broken by Mihail Alexandrov. Before he retired from swimming in 2001, Zahov played and trained for Slavia Swimming Club in Sofia under his personal coach Lazar Kamenov.
Hakan Kiper is a Turkish former swimmer, who specialized in breaststroke events. During his sporting career, he held numerous Turkish championship titles and meet records, and played for Galatasaray Spor Kulübü. Kiper also represented Turkey, as a 27-year-old, at the 2000 Summer Olympics, where he served as the captain of the national swimming team.
Karar Samedul Islam is a Bangladeshi former swimmer, who specialized in breaststroke events. Islam competed only in the men's 100 m breaststroke at the 2000 Summer Olympics in Sydney. He received a Universality place from FINA, in an entry time of 1:09.51. He challenged six other swimmers in heat two, including two-time Olympians Juan José Madrigal of Costa Rica and Jean Luc Razakarivony of Madagascar. With one swimmer casting out of the race for a no false-start rule, Islam rounded out the field to last place in 1:14.93, almost ten seconds farther behind leader Madrigal. Islam failed to advance into the semifinals, as he placed sixty-fourth overall on the first day of prelims.
Facinet Bangoura is a Guinean former swimmer, who specialized in breasts stroke events. Bangoura competed only in the men's 100 m breaststroke at the 2000 Summer Olympics in Sydney. He received a Universality place from FINA, in an entry time of 1:10.00. He challenged six other swimmers in heat two, including two-time Olympians Juan José Madrigal of Costa Rica and Jean Luc Razakarivony of Madagascar. Before the start of his heat, Bangoura immediately jumped into the pool first, and was disqualified for breaking a no false-start rule on the first day of preliminaries.
Kieran Chan is a Papua New Guinean former swimmer, who specialized in breaststroke events. Chan competed for Papua New Guinea in the men's 100 m breaststroke at the 2000 Summer Olympics in Sydney. He received a Universality place from FINA, in an entry time of 1:14.40. He participated in heat one against two other swimmers Antonio Leon of Paraguay and Joe Atuhaire of Uganda. Diving in with a 0.95-second deficit, Chan enjoyed the race of his life to take only a second seed in a lifetime best of 1:13.34. Chan failed to advance into the semifinals, as he placed sixty-third overall on the first day of prelims.
Joe Atuhaire is a Ugandan former swimmer, who specialized in breaststroke events. He represented Uganda at the 2000 Summer Olympics, finishing sixty-fifth in the 100 m breaststroke. Shortly after the Games, Atuhaire's swimming career had been overshadowed with criminal charges when he was arrested and charged with rape, and held for a month before the charges were dropped.
Paraguay 
