Croatia competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's fourth consecutive appearance at the Summer Olympics since the post-Yugoslav era. The Croatian Olympic Committee sent the nation's smallest delegation to the Games since its debut in 1992. A total of 81 athletes, 66 men and 15 women, competed in 14 sports. Men's water polo, and men's handball were the only team-based sports in which Croatia had its representation in these Olympic Games.
Tamás Molnár is a Hungarian former water polo player, who played on the gold medal squads at the 2000 Summer Olympics, 2004 Summer Olympics and 2008 Summer Olympics. He is one of ten male athletes who won three Olympic gold medals in water polo. He made his debut for the national team in 1997, and was named Hungarian Water Polo Player of the Year in 1998.
Péter Biros is a Hungarian former water polo player, who played on the gold medal squads at the 2000 Summer Olympics, 2004 Summer Olympics and 2008 Summer Olympics, which makes him one of six male athletes who won three Olympic gold medals in water polo. He also competed at the 2012 Summer Olympics.
Veljko Uskoković is a retired Montenegrin water polo player. His club achievements are: European Champion 2000, 4 times Yugoslav Champion 4 times Yugoslav Cup Winner. Member of Yugoslav national water polo team from 1991 to 2002. Team captain from 1996 to 2001. From Played more than 300 games, scored over 400 goals.
Goran Sukno is a Croatian former water polo player. He was an Olympic gold medal winner as a member of the Yugoslav water polo team at the 1984 Summer Olympics.
Dubravko Šimenc is a former Croatian water polo player who competed for both Yugoslavia and Croatia, and later water polo coach.
The Croatia men's national water polo team represents Croatia in international water polo competitions and is controlled by the Croatian Water Polo Federation. They have won gold medals in the Olympics, World and European Championships, FINA World League and Mediterranean Games, making them one of the most successful men's water polo teams in the world. Overall Croatia won 28 medals at competitions.
Zoran Janković was a Yugoslav water polo player notable for winning a silver medal at the 1964 Summer Olympics in Tokyo, and a gold medal in Mexico City in 1968, with the Yugoslavian men's water polo team.
Marko Brainović was a Croat water polo player who competed for Yugoslavia in the 1948 Summer Olympics and in the 1952 Summer Olympics. He was part of the Yugoslav team that was eliminated in the second round of the 1948 Olympic tournament. He played two matches. Four years later he won the silver medal with the Yugoslav team in the 1952 tournament. He played three matches.
Zdravko "Ćiro" Kovačić was a Croatian water polo player who competed for Yugoslavia in the 1948 Summer Olympics, in the 1952 Summer Olympics, and in the 1956 Summer Olympics.
Igor Hinić is a Croatian former professional water polo player, who was a member of the Croatia national team, that won the silver medal at the 1996 Summer Olympics in Atlanta, and the gold medal at the 2012 Summer Olympics in London.
Deni Lušić is a Croatian water polo coach and former water polo player. He is a double Olympic gold medal winner with Yugoslavia at the 1984 and 1988 Summer Olympics.
Ratko Rudić is a retired Croatian water polo coach and a former water polo player. As of 2015, he has won 38 medals as a coach at major events, making him the most successful water polo coach in history, and second most successful team sport coach of all time. He won four gold medals, of which three consecutive, with three different national teams at the Summer Olympics, as well as three gold medals with three national teams at the World Championships, among many others. In 2007 was inducted into the International Swimming Hall of Fame, described as "one of the best, if not the best, water polo coach to walk the deck of the pool".
Andro Bušlje is a Croatian water polo player who competed in the 2008 Summer Olympics, 2012 Summer Olympics and 2016 Summer Olympics. At the 2012 Summer Olympics he was part of the Croatian team that won the gold medal. He is right-handed and plays the center defender position. From 2016 to 2019 he played for Greek powerhouse Olympiacos, with whom he won the 2017–18 LEN Champions League. He started playing water polo at the age of 12, and he made his national team debut in 2005. Bušlje is one of the top defenders in the world.
Sandro Sukno is a Croatian former professional water polo player. At the 2012 Summer Olympics, he competed for the Croatia national team in the men's event winning the gold medal. He also won a silver medal at the 2016 Summer Olympics. He last played for VK Jug. He currently works as an assistant coach of the senior men's Croatia national team.
Zoran Petrović is a Serbian former water polo player. As a member of Yugoslavia's water polo team he won a gold medal at the 1984 Summer Olympics.
Renco Posinković is a former Yugoslav and Croatian water polo water polo player and coach. He was part of the Yugoslavia team which won the gold medal in water polo in the 1988 Summer Olympics.
Zlatko Šimenc is a retired Croatian water polo player and coach (1969-1975) of Slovenian origin. He was part of the Yugoslav teams that won a silver medal at the 1964 Olympics and placed fourth in 1960. He won three more medals at the European championships in 1958–1966.
Zoran Mustur is a former water polo player. As a member of Yugoslavia's water polo team he won a silver medal at the 1980 Summer Olympics.
Damir Polić is a former Croatian water polo player. As a member of Yugoslavia's water polo team he won a silver medal at the 1980 Summer Olympics.
