Gustavo Ballas (born February 10, 1958) is an Argentine retired super flyweight boxer who fought from 1976 until 1990.

In 1979 he managed to outpoint future multi champion Santos Benigno Laciar in what is a still remembered fight in Argentina On September 12, 1981 he became the first ever WBA world super flyweight champion by defeating Sok-Chul Bae by TKO 8 in Estadio Luna Park, Buenos Aires, Argentina.

[1] He was unsuccessful on two other attempts at winning the super flyweight title, one from the WBA against Japanese boxer Jiro Watanabe,[2] and another one for the WBC.

Although he fought 120 times in his career, only four of those fights, all of which he lost, were outside of Argentina, three of them for a world title.

Ballas had trouble after boxing with alcoholism and drug addiction; he was jailed once for robbery.