Carlos Souto Vidal (born Oviedo, 4 November 1976) is a Spanish rugby union player. He played as a flanker. His twin brother, Sergio Souto was also a Spanish international.
His first international cap was on December 2 1998, against Portugal at Murrayfield. He played all the three matches for Spain at the 1999 Rugby World Cup. His last cap was at the match against Romania on March 27 2010, at Bucharest.