Twelve national teams were competing in the men's Olympic field hockey tournament at the 2016 Summer Olympics in Rio de Janeiro. Sixteen players were officially enrolled in each squad. Two reserve players could also be nominated to be available should a player enrolled in the official squad become injured during the tournament.
^"Seleção Masculina definida para as Olimpíadas" [Men's national team are determined for the Olympics] (in Portuguese). Brazilian Field and Indoor Hockey Confederation. 15 July 2016. Archived from the original on 20 December 2016. Retrieved 16 July 2016.