Arnaldo de Oliveira da Silva (born 26 March 1964 in Rio de Janeiro) is a former Brazilian athlete who competed mainly in the 100 metres. He is a four-time Olympian (1984, 1988, 1992 and 1996).
He competed for Brazil at the 1996 Summer Olympics held in Atlanta, United States, where he won the bronze medal in the men's 4 x 100 metre relay with his teammates Robson da Silva, Edson Ribeiro and André da Silva.