Marcus Thomas (born 10 June 1970 in Bridgetown, Barbados) is a super middleweight Barbadian boxer who turned pro in 2001. He represented Barbados in the 1992 Summer Olympics, 1996 Summer Olympics, 1991 Pan American Games, 1995 Pan American Games, the 1994 Commonwealth Games and the 1998 Central American and Caribbean Games, where he won a silver medal in the light middleweight category.