Franco Sebastián Sosa (born 4 April 1981) is an Argentine football defender currently playing for Ñuñorco.
Born in Monteros, Tucumán Province, Sosa started his playing career in 2001 with Gimnasia y Esgrima de Jujuy of the Argentine 2nd division.
He was part of the team that won the Clausura 2005 and obtained promotion to the Argentine Primera.
Sosa played for Gimnasia until the end of 2006, making over 100 appearances for the club, 43 in the Primera.
This biographical article related to association football in Argentina, about a defender born in the 1980s, is a stub.