Oswaldo Cruz Filho (? – ?) was a Brazilian chess master.
He represented Brazil in 3rd unofficial Chess Olympiad at Munich 1936,[1] in the 8th Chess Olympiad at Buenos Aires 1939 and the 10th Chess Olympiad at Helsinki 1952.[2]
He participated in many tournaments played in Rio de Janeiro; shared 3rd with Walter Oswaldo Cruz in 1943 (Campeonato do CXRJ, Erich Eliskases won), took 2nd in 1943 (Quadrangular Clube Ginastico Portugues, Eliskases won),[3] took 9th in 1946 (Miguel Najdorf won),[4] took 2nd, behind W. Cruz, in 1948 (the 16th Brazilian Chess Championship),[5] tied for 11-12th in 1949 (BRA-ch, W. Cruz won),[6] took 10th in 1950 (BRA-ch, J.T. Mangini won),[7] and took 11th in 1952 (the 1st Torneio Internacional do Fluminense F.C., Héctor Rossetto won).[8]