Hernán Gumy (born 5 March 1972) is a former tennis player from Argentina, who turned professional in 1991.

He represented his native country at the 1996 Summer Olympics in Atlanta, where he was defeated in the first round by Venezuela's Nicolás Pereira.

15 Félix Mantilla in a tough three-setter: in the semi-finals, and the Chilean world number 11 Marcelo Ríos in the final 6–4, 7–5.

Gumy won the gold medal in the men's singles competition at the 1995 Pan American Games.

1 and US and Australian Open champion Marat Safin as well as Guillermo Cañas and Ernests Gulbis.