Osvaldo "Chiche" Sosa (born 26 January 1948 in Buenos Aires) is an Argentine football manager and former player who most recently worked as the manager of Atlético Tucumán in the Primera División Argentina. Sosa began his playing career in 1964 with Almagro. In 1966 he joined Primera División side Argentinos Juniors where he played over 100 games over his two stints with the club. He also played for Independiente and Ferro Carril Oeste. Sosa had his first attempt at management as the player-coach of Argentinos Juniors between 1970 and 1971. He went on to manage the club another 5 times (1974, 1981, 1992 94, 1997-00 & 2004-05). Sosa also returned to two of his other former clubs as manager, Almagro in 1980-81 and Independiente in 2003.