Papua New Guinea competed at the 2000 Summer Olympics in Sydney, Australia.
Emma Kathryne Robinson is an Irish former swimmer, who specialized in breaststroke events. She is a former Irish record holder in the 100 m breaststroke and a member of the swimming team at Loughborough University, under her personal coach Paul Dennis.
Shim Min-ji is a South Korean former swimmer, who specialized in freestyle and backstroke events. She is a two-time Olympian and a three-time relay medalist at the Asian Games (2002).
Roshendra Julienne Mercedes Vrolijk is an Aruban former swimmer, who specialized in sprint freestyle events. She is one of Aruba's first Olympic swimmers, alongside Davy Bisslik, and also a two-time Olympian.
Imaday Núñez González is a Cuban former swimmer, who specialized in breaststroke events. She won a total of three medals in the breaststroke and medley relay at the 1998 Central American and Caribbean Games in Maracaibo, Venezuela.
Íris Edda Heimisdóttir is an Icelandic former swimmer who specialized in breaststroke events. She is a two-time Olympian and a former Icelandic record holder in the 100 and 200 m breaststroke.
Aikaterini "Katia" Sarakatsani is a Greek swimmer, who specialized in breaststroke and individual medley events. She is a three-time Olympian, a former Greek record holder in the breaststroke, and a member of the swimming team for Hawaiʻi Rainbow Wahine at the University of Hawaiʻi at Mānoa, under head coach Vojko Race.
Facinet Bangoura is a Guinean former swimmer, who specialized in breaststroke 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.
Antonio Manuel Leon Candia is a Paraguayan former swimmer, who specialized in breaststroke events. During his sporting career, he represented Paraguay, as an eighteen-year-old, at the 2000 Summer Olympics, and in all four editions of the FINA World Championships since 2001. Leon also trained for Deportivo de Puerto Sajonia, under his longtime coach and mentor Roberto Colmán.
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.
Byun Hye-young is a South Korean former swimmer, who specialized in breaststroke events. She represented South Korea in two editions of the Olympic Games, and eventually became a top 20 finalist at the 2003 Summer Universiade in Daegu.
Elvira Fischer is an Austrian former swimmer, who specialized in breaststroke events. She represented Austria in two editions of the Olympic Games, and also held numerous Austrian records in a similar disciplinary double until they were all broken by Mirna Jukić in the early 2000s. While studying in the United States, she received three All-American honors for the Nebraska Cornhuskers and later earned a 200-yard breaststroke title at the Pacific-10 Conference Championships, following her sudden transfer to the UCLA Bruins.
Agata Czaplicki is a Swiss former swimmer, who specialized in breaststroke events. She represented Switzerland, as a 16-year-old, at the 2000 Summer Olympics, and also held numerous national meet and age group records in a breaststroke double.
Jenny Rose Guerrero is a Filipino former swimmer, who specialized in breaststroke events. She represented the Philippines, as the youngest ever athlete of the squad, at the 2000 Summer Olympics, in Sydney. She won two medals at the 2001 Southeast Asian Games in Kuala Lumpur, and later became a top 8 finalist at the 2002 Asian Games in Busan, South Korea before her official retirement in 2005.
Olga Moltchanova is a Russian-born Kyrgyz former swimmer, who specialized in breaststroke events. She became a top 8 finalist for Russia at the 1998 European Short Course Swimming Championships, and later switched nationalities to represent Kyrgyzstan at the 2000 Summer Olympics.
Caroline Chiu Sin-wing is a Hong Kong former swimmer, who specialized in breaststroke events. She represented the new Hong Kong, China, as a 16-year-old, at the 2000 Summer Olympics, and was also a member of the territory's squad at the 2002 Asian Games.
Nádia Vanda Sousa Eloy Cruz is an Angolan former swimmer, who specialized in breaststroke events. She represented Angola in all four editions of the Olympic Games since 1988, and later became the chairman of the Angolan Olympic Athletes Association (AAOA) in 2010.
Balkissa Ouhoumoudou is a Nigerien former swimmer, who specialized in breaststroke events. Ouhoumoudou competed only in the women's 100 m breaststroke at the 2000 Summer Olympics in Sydney. She received a ticket from FINA, under a Universality program, without meeting an entry time. She participated in heat one against three other swimmers Mariam Pauline Keita of Mali, 14-year-old Doli Akhter of Bangladesh, and Pamela Girimbabazi of Rwanda. With one swimmer casting out of the race for a no false-start rule (Akhter), and the other for an illegal turn (Girimbabazi), Ouhoumoudou raced to the second seed in a time of 1:42.39, the slowest ever in the heats. Ouhoumoudou failed to advance into the semifinals, as she placed forty-first overall in the prelims.
Hem Raksmey is a Cambodian former swimmer, who specialized in sprint freestyle and breaststroke events. She represented Cambodia in two editions of the Olympic Games, and also held numerous age group records in all strokes. She also shared a sibling tandem together with her brother Hem Kiry, when they both competed at the 2000 Summer Olympics.
Papua New Guinea 
