The qualification for the 2016 Men's Olympic Field hockey Tournament was held from September 2014 to October 2015. There were three qualification events, host country, continental championship, 2014–15 FIH Hockey World League Semifinals respectively. Total twelve teams could participated in the 2016 Summer Olympics. ^1 – South Africa won the continental qualifier however the team did not participate in the 2016 Olympics. South African Sports Confederation and Olympic Committee and South African Hockey Association made an agreement on the Rio 2016 Olympics qualification criteria that the Continental Qualification route would not be considered; as a result, New Zealand, as the highest-ranked team from the 2014-15 Hockey World League Semifinals not qualified, participated instead. Each of the continental champions receives a berth alongside the host Brazil, while another six spots will be decided in the 2014–2015 FIH Hockey World League; as the host nation, Brazil has guaranteed a quota places if it satisfies the following performance criteria set by FIH: the men's team should either obtain a world ranking equal to or better than thirtieth place by the end of 2014, or not finish lower than sixth at the 2015 Pan American Games.

Brazil qualified by finishing the fourth in the 2015 Pan American Games Qualification process

Eigenmannia is a genus of fish in the family Sternopygidae native to tropical and subtropical South America, Panama. They are found in slow-flowing streams, along the edge of large rivers, in deep river channels and in floodplains, the genus includes E. vicentespelaea, the only cave-adapted knifefish. Eigenmannia are found near submerged roots, aquatic plants and floating meadows. Depending on the exact species, they have a maximum total length of 14.3–49.6 cm. They are nocturnal, feed on small invertebrates such as aquatic insect larvae and zooplanktonic crustaceans. There are 23 recognized species in this genus: Eigenmannia antonioi L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia besouro L. A. W. Peixoto & Wosiacki, 2016 Eigenmannia correntes Campos-da-Paz & Queiroz, 2017 Eigenmannia desantanai L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia goajira L. P. Schultz, 1949 Eigenmannia guairaca L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia humboldtii Eigenmannia limbata Eigenmannia loretana Waltz & Albert, 2018 Eigenmannia macrops Eigenmannia matintapereira L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia meeki Dutra, de Santana & Wosiacki, 2017 Eigenmannia microstoma Eigenmannia muirapinima L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia nigra Mago-Leccia, 1994 Eigenmannia oradens Dutra, Peixoto, de Santana & Wosiacki, 2018 Eigenmannia pavulagem L. A. W. Peixoto, Dutra & Wosiacki, 2015 Eigenmannia sayona Peixoto & Waltz, 2017 Eigenmannia sirius Peixoto & Waltz, 2019 Eigenmannia trilineata R. B.

López & Castello, 1966 Eigenmannia vicentespelaea Triques, 1996 Eigenmannia virescens Eigenmannia waiwai L. A. W. Peixoto, Dutra & Wosiacki, 2015