The following is the list of squads that took part in the men's water polo tournament at the 1952 Summer Olympics.
[3] Head coach: Austria entered a squad of eleven players.
[4] Head coach: Belgium entered an unknown number of players ten of them are known.
[12] Head coach: Giulio De Filippis and Mario Majoni The following players represented Mexico.
[14] Head coach: Frans Kuyper Portugal entered a squad of ten players.
[18] Head coach: Vadim Kuznetsov and Ivan Dmitriev The following players represented Spain.