The Serbia men's national water polo team represents Serbia in international water polo competitions and is controlled by the Water Polo Association of Serbia. They have won gold medals in the Olympics, World and European Championships, World Cup, FINA World League, Mediterranean Games and Universiade, making them one of the most successful men's water polo teams in the world.
The Australian national water polo team represents Australia in men's international water polo competitions and is controlled by Water Polo Australia. The national men's team has the nickname of "The Sharks". It is organised into the Asia/Oceania regional group.
The Montenegro men's national water polo team represents Montenegro in international men's water polo competitions, and is controlled by the Water Polo and Swimming Federation of Montenegro.
The Hungary men's national water polo team represents Hungary in international men's water polo competitions and is controlled by the Hungarian Water Polo Association. It is considered the world's top power in the history of water polo, having won 16 Olympic, 11 World Championship, 10 FINA World Cup, eight FINA World League, 24 European Championship and 16 Summer Universiade medals for a total of 88.
The Spain men's national water polo team represents Spain in men's international water polo competitions and it is controlled by Real Federación Española de Natación.
The Italian national water polo team represents Italy in men's international water polo competitions and is controlled by Federnuoto. The national men's team has the nickname of "Settebello", a reference to both the Italian card game scopa and a standard water polo team having seven players.
Richie Campbell is an Australian water polo player who competed in the 2008, 2012 and 2016 Summer Olympics. He has played professionally in Barcelona, Spain and currently plays for the UNSW Wests Magpies in the Australian National Water-polo League. Campbell competed at the Junior World Cup 2005 and 2007. He won a bronze medal in the World League super finals in 2007.
Rhys Howden is an Australian water polo player who competed in the 2008, 2012 and 2016 Summer Olympics. He was the joint top sprinter at the 2012 Olympics, with 19 sprints won. He was also the top sprinter at the 2016 Olympics, with 18 sprints won.
Joel Dennerley is an Australian water polo player. At the 2012 Summer Olympics, he competed for the Australia men's national water polo team in the men's event. He is 6 ft 4.5 inches tall.
Aaron Younger is an Australian water polo player.
Aidan Joseph "AJ" Roach is an Australian male water polo player. At the 2012 and 2016 Summer Olympics, he competed for the Australia men's national water polo team in the men's event. He also competed at the 2011 World Aquatics Championships.
George Ford is a water polo player from Australia. He was part of the Australian team at the 2015 World Aquatics Championships, as well as part of the team attending the 2016 Olympics in Rio de Janeiro.
The men's tournament of water polo at the 2020 Summer Olympics at Tokyo, Japan began on 25 July and ended on 8 August 2021. It was held at the Tokyo Tatsumi International Swimming Center. It was the 27th official appearance of the tournament, which was not held in 1896 and was a demonstration sport in 1904 but otherwise had been held at every Olympics.
These are the rosters of all participating teams at the men's water polo tournament at the 2020 Summer Olympics in Tokyo. The twelve national teams were required to submit squads of 12 players. Additionally, teams could name one alternate player. In the event that a player on the submitted squad list suffered an injury or illness, that player would be able to be replaced by the player in the alternate list. On 3 July 2021, the International Olympic Committee (IOC) confirmed that there was a change for the 2020 Summer Olympics, allowing all 13 water polo players named to be available on the roster, with 12 being named for each match. This change was implemented due to the challenges of the COVID-19 pandemic. As of 2 August 2021, all players competed in the men's tournament.
Goran Tomasevic is an Australian water polo player.
Nathan Power is an Australian water polo player.
Blake Edwards is an Australian water polo player.
Timothy Francis Putt is an Australian water polo player.
Lachlan Edwards is an Australian water polo player.
Anthony Hrysanthos is an Australian water polo player of Greek descent who plays as a goalkeeper for Australia men's national water polo team. He made his debut appearance at the Olympics representing Australia at the 2020 Summer Olympics.
Australia 
