The men's tournament of Water polo at the 2016 Summer Olympics at Rio de Janeiro, Brazil, began on 6 August and ended on 20 August 2016. Games were held at the Maria Lenk Aquatics Centre and the Olympic Aquatics Stadium.

The Serbia men's national water polo team represents Serbia in international water polo competitions and is controlled by the Water Polo Association of Serbia. They have won gold medals in the Olympics, World and European Championships, World Cup, FINA World League, Mediterranean Games and Universiade, making them one of the most successful men's water polo teams in the world.