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).

[1] Eight teams participated to decide the winner of what would be a bi-annual event until 1999.

The top eight teams from the previous World Aquatic Championship have qualified.

Spain Yugoslavia Hungary United States Germany( Italy) Soviet Union Australia Romania Host (2nd 1991 World Championship)1st 1991 World Championship3rd 1991 World Championship4th 1991 World Championship5th 1991 World Championship6th 1991 World Championship7th 1991 World Championship8th 1991 World Championship9th 1991 World Championship - replace  Italy Following ranking of the 1991 World Championship Yugoslavia (1) Spain (2) (H) Hungary (3) United States (4) Germany (5) Soviet Union (7) Australia (8) Romania (9) Yugoslavia United States Soviet Union Romania Spain (H) Hungary Germany Australia

This article about an international water polo competition is a stub.