Carlos Gustavo Bossio (born 1 December 1973) is a retired Argentine professional footballer who played as a goalkeeper.
Ironically nicknamed Chiquito ("little") due to his height of 1.94 metres, Bossio represented several teams, but achieved greater notability at Estudiantes and Lanús. He was part of the Argentina national team between 1994 and 1996, winning the golden medal at the 1995 Pan American Games and the silver medal at the 1996 Summer Olympics.
Born in Córdoba, Bossio started at his home-town club, Las Palmas in 1992. He transferred to the nearby Belgrano de Córdoba in the following year and made his professional debut on 7 November 1993 against Gimnasia y Tiro. Until the end of the season, Bossio appeared in 26 league games. He then moved to the recently relegated, Estudiantes and helped them win the Primera B in the first season. On 12 May 1996, Bossio became the first goalkeeper in Argentine football to score a header, after connecting a corner kick in a match between Estudiantes and Racing Club for the conclusive draw in one goal. Until 1999, he played in 188 games for Estudiantes, 146 for the league.