Gastón Alejandro Sessa (born 15 April 1973 in La Plata) is a retired Argentine professional footballer who played as a goalkeeper.

Sessa started his career with local club Estudiantes in 1993 before moving down a division to join Huracán Corrientes in 1995.

In 2007, Sessa decided to seek a new challenge by moving to Ecuador and signing a 2-year contract to join Barcelona Sporting Club.

Sessa has a history of disciplinary and anger problems which ultimately led to his departure from Vélez Sársfield.

His actions received high cricism from the media, being labeled as a "butcher", a common designation in Argentina for players who commit violent fouls.