Gustavo Garetto (born 23 July 1965) is a former professional tennis player from Argentina.

Garetto, who is of Italian descent, was born in the Argentine city of Rafaela.

[1] Based in Buenos Aires, he turned professional in 1983.

His best performance on tour was a quarter-final appearance at the 1987 Argentine Open in Buenos Aires, where he had a win over top 50 player Ronald Agénor en route.

He won a Challenger title in doubles at Santiago in 1991, partnering Marcelo Ingaramo.