This category refers to international water polo competitions hosted by the Kingdom of Yugoslavia (1918-1943) and the Socialist Federal Republic of Yugoslavia (1943-1992). For international water polo competitions hosted by the modern nation-states or in other historical periods, please choose the corresponding categories, for instance: Category:International water polo competitions hosted by Croatia, Category:International water polo competitions hosted by Montenegro, Category:International water polo competitions hosted by Serbia, Category:International water polo competitions hosted by Serbia and Montenegro, etc.