Carlos Sebastián Sosa Silva (born 19 August 1986) is a Uruguayan professional footballer who plays as a goalkeeper for Deportivo Maipú.

Upon his return, Sosa was the second choice goalkeeper behind former Argentine international Pablo Cavallero, until coach Julio Ribas chose him for the starting eleven of Peñarol for the 2009–10 Uruguayan Primera División season.

During his one-year stay at Boca, Sosa was mostly a substitute for Agustín Orión, but won with the team the 2011 Apertura and the 2011–12 Copa Argentina.

There he again the second choice goalkeeper (behind Germán Montoya) at first, but then became a regular starter and played 9 games in his team's 2012 Inicial winning campaign.

After making a great impression that culminated with a Copa MX runner up finish, Sosa was promoted to first choice goalkeeper for the last 2 games of the season as Morelia inched away from relegation.