José Carlos Souza Júnior (born July 13, 1971) is a former international swimmer from Brazil, who participated at the 1992 Summer Olympics for his native country.

[2] José Carlos was at the 1991 Pan American Games in Havana, where he finished 7th in the 200-metre individual medley, and 8th in the 50-metre freestyle.

[3] At the 1992 Summer Olympics in Barcelona, his best result was the sixth place in the men's 4×100-metre freestyle.

On July 7, the Brazil team, composed of Fernando Scherer, Teofilo Ferreira, José Carlos Souza and Gustavo Borges broke the world record in 4×100-metre freestyle with a time of 3:13.97, which belonged to Sweden since March 19, 1989: 3:14.00.

[7][8] He also finished 5th in the 4×100-metre medley, along with Maurício Menezes, Gustavo Borges and Rogério Romero, and 15th in the 100-metre butterfly.