João Gonçalves Filho

João Gonçalves Filho (7 December 1934 – 27 June 2010) was a Brazilian sportsman. He competed in five Olympic Games in both swimming and water polo. Born in Rio Claro, São Paulo, he represented Brazil in swimming at the 1952 and 1956 Olympics and in water polo at the 1960, 1964, and 1968 Olympics.

Gonçalves swam for Fluminense Football Club, where he met future wife Wilma, part of the club's diving team. He studied Physical Education in the military academy alongside future Olympic track and field champion Adhemar da Silva, becoming a judo enthusiast and black belt.

At the inaugural Pan American Games in 1951, in Buenos Aires, Argentina, he won a silver medal in the 4×200-metre freestyle, along with Aram Boghossian, Ricardo Capanema, and Tetsuo Okamoto. At the 1952 Summer Olympics in Helsinki, he swam the 100-metre backstroke and the 4×200-metre freestyle, not reaching the final. and 4th in the 4 × 100-metre medley. The following year, at the 1956 Summer Olympics in Melbourne, he swam the 100-metre backstroke, not reaching the final. a gold medal at the 1963 Pan American Games in São Paulo, and a silver at the 1967 Pan American Games in Winnipeg.

At Rome 1960, Tokyo 1964 and Mexico City 1968, he finished 13th with the Brazilian Water Polo team.