The men's tournament of water polo at the 2012 Summer Olympics at London, Great Britain, began on 29 July and lasted until 12 August 2012.

[1] All games were held at the Water Polo Arena.

Teams from twelve nations competed in the tournament and were seeded into two groups for the preliminary round.

A total of 42 games were played, 30 of them in the preliminary round.

Five-time Olympian(s): 3 players Four-time Olympian(s): 14 players Three-time Olympic medalist(s): 5 players Source: Official Results Book (page 466)[22] Source: Official Results Book (page 462)[22] Source: Official Results Book (page 465)[22] The men's all-star team was announced on 12 August 2012.