Water polo at the 1963 Pan American Games

The Water polo tournament was contested for men only at the 1963 Pan American Games in São Paulo, Brazil. The top three teams from the event qualified through to the 1964 Summer Olympics in Tokyo, Japan.

Competing teams
Five teams contested the event.

Format
Teams play in a round-robin format with the teams taking on each other twice. The team with the most points after eight matches would take the gold medal.