Water polo at the 2004 Summer Olympics took place at the Olympic Aquatic Centre where women competed for only the second time in the event at the Summer Olympics.
Water polo at the 1980 Summer Olympics as usual was a part of the swimming sport, other two parts were swimming and diving. They were not three separate sports, because they all were governed by one federation — FINA. Water Polo discipline consisted of one event: men's team. In the preliminary round 12 teams were divided into three groups. Two best teams from each group advanced to Group A of the final round to determine places 1 through 6. The rest of teams played in Group B of the final round to determine places 7 through 12.
The FINA Men's Water Polo World Cup is an international water polo tournament, organized by FINA and featuring eight men's national teams. It was established in 1979, initially taking place on odd years. Since 2002 it is held every four years, in the even-year between Olympics.
The 1999 FINA Women's Water Polo World Cup was the twelfth edition of the event, organised by the International Swimming Federation (FINA). The event took place in Winnipeg, Manitoba, Canada from May 24 to May 29, 1999. Participating teams were the eight leading teams from the World Championships. The tournament served as a qualifier for the 2000 Summer Olympics in Sydney, Australia. Automatically the first ranked teams from Europe and the Americas, plus one team from the host country, qualified. Other teams could qualify at the 2000 Olympic Games Qualifying Tournament, held from April 22 to April 30 in Palermo, Italy.
The 2002 FINA Men's Water Polo World Cup was the twelfth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in the Tašmajdan Swimming Pool in Belgrade, Yugoslavia from August 20 to August 25, 2002. Participating teams were the eight best teams from the last World Championships in Fukuoka, Japan (2001).
The 1979 FINA Men's Water Polo World Cup was the first edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Rijeka and in the Tašmajdan Swimming Pool in Belgrade, Yugoslavia.
The 1981 FINA Men's Water Polo World Cup was the second edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Long Beach, United States. The eight participating teams played a round robin to decide the second ever winner of what would be a bi-annual event until 1999.
The 1983 FINA Men's Water Polo World Cup was the third edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Malibu, United States as a test event to the 1984 Summer Olympics. The eight participating teams played a round robin to decide the winner of what would be a bi-annual event until 1999.
The 2002 FINA Women's Water Polo World Cup was the thirteenth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Perth, Western Australia from 10 to 15 December 2002. Participating teams were the eight best teams from the last World Championships in Fukuoka, Japan (2001). The top-five qualified for the 2003 World Aquatics Championships in Barcelona, Spain.
The 1987 FINA Men's Water Polo World Cup was the fifth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Thessalonica, Greece. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 1989 FINA Men's Water Polo World Cup was the sixth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Berlin, West Germany. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 1991 FINA Men's Water Polo World Cup was the seventh edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Barcelona, Spain as test event to 1992 Summer Olympics. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 1993 FINA Men's Water Polo World Cup was the eighth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Athens, Greece. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 1995 FINA Men's Water Polo World Cup was the ninth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Atlanta, United States as test event for the 1996 Summer Olympics. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 1997 FINA Men's Water Polo World Cup was the tenth edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). The event took place in Athens, Greece. Eight teams participated to decide the winner of what would be a bi-annual event until 1999.
The 2011 FINA Women's Water Polo World League was the tenth edition of the event, organised by the world's governing body in aquatics, the FINA. After playing in groups within the same continent, eight teams qualify to play in a final tournament, called the Super Final in Beijing, China from June 1 to June 6, 2013.
The 2011 FINA Women's Water Polo World League was the eighth edition of the event, organised by the world's governing body in aquatics, the FINA. After playing in groups within the same continent, eight teams qualify to play in a final tournament, called the Super Final in Tianjin, China from June 14 to June 19, 2011.
The 2010 FINA Women's Water Polo World League was the seventh edition of the event, organised by the world's governing body in aquatics, the FINA. After playing in groups within the same continent, eight teams qualify to play in a final tournament, called the Super Final in La Jolla, California from June 28 to July 3, 2010.
The 2009 FINA Women's Water Polo World League was the 6th edition of the event, organised by the world's governing body in aquatics, the International Swimming Federation (FINA). After playing in groups within the same continent, eight teams qualified to play in a final tournament, called the Super Final in Kirishi, Russia from 9 to 14 June 2009.
The 2020 FINA Men's Water Polo World League was the 19th edition of the annual men's international water polo tournament. It was played between November 2019 and July 2021 and open to all men's water polo national teams. After participating in a preliminary round, eight teams qualified to play in a final tournament, called the Super Final, originally scheduled from 23 to 28 June 2020. The tournament was postponed due to the COVID-19 pandemic. In August 2020, it was announced that it would be played in from January to July 2021.
FRG 
USA 
ESP 
YUG 
ITA 
NED 
AUS 
GRE 
