The 1973 Men's World Water Polo Championship was the first edition of the men's water polo tournament at the World Aquatics Championships, organised by the world governing body in aquatics, the FINA.

The tournament was held from 1 to 9 September 1973, and was incorporated into the inaugural 1973 World Aquatics Championships in Belgrade, Yugoslavia.

Preliminary round results apply.

Balazs Balla, Andrá Bodner, Gabor Csapo, Tibor Czervengak, Tamas Farago, István Görgenyi, Zoltán Kasas, Ferenc Konrad, Endre Molnar, László Sarosi, István Szivos Jr. Head coach: Dezső Gyarmati

Balazs Balla András Bodnár Gábor Csapó Tibor Cservenyák Tamás Faragó István Görgényi Zoltán Kásás Ferenc Konrád Endre Molnár László Sárosi István Szívós Jr.Head coach: Dezső Gyarmati Anatoly Akimov Aleksei Barkalov Aleksandr Dreval Andrey Frolov Aleksandr Kabanov Yuri Mityanin Nuzgari Mshvenieradze Leonid Osipov Vitaly Romanchuk Sergey Shevernyov Vladimir ZhmudskyHead coach: Anatoly Blumental Siniša Belamarić Ozren Bonačić Milan Franković Boško Lozica Predrag Manojlović Miloš Marković Đorđe Perišić Damir Polić Ratko Rudić Đuro Savinović Nikola StamenićHead coach: Ratko Rudić