Athos Procópio de Oliveira Filho (born 3 January 1943) is a former international freestyle and backstroke swimmer from Brazil.

[4] At the 1960 Summer Olympics, in Rome, he swam the 100-metre backstroke and the 4×100-metre medley, not reaching the finals.

[1] At the 1963 Pan American Games, in São Paulo, he won two bronze medals in the 100-metre backstroke, and in the 4×200-metre freestyle.

[1] Among other achievements, he was part of the Brazilian team champion of the 4×100-metre freestyle relay in the 1964 South American Absolute Championship, in Guayaquil, Ecuador.

Team composed of Alvaro Pires, Athos Procópio de Oliveira, Paulo Salles Cunha, and Antonio Celso Guimarães.