Clinton Marsh (born 19 January 1972) is a former professional tennis player from South Africa.

[1] Marsh was a gifted junior player, ranked number one in his country every year from the age of 12 to 17.

[2] He and Marcos Ondruska were boys' doubles finalists at the 1990 French Open and 1990 Wimbledon Championships.

[3] They lost both finals to the Canadian pairing of Sébastien Lareau and Sébastien Leblanc.

[3] Playing as a qualifier, Marsh lost to 16th seed Richard Krajicek in the first round of the 1995 Australian Open.