Colin Frederick Porter (born November 23, 1975) is a former American professional baseball player. An outfielder, Porter reached the Major League Baseball level in 2003 with the Houston Astros and also the St. Louis Cardinals in 2004.

Drafted by the Astros in the 17th round of the 1998 Major League Baseball Draft, Porter made his major league debut on May 30, 2003. On January 22, 2004, he was claimed off waivers by the St. Louis Cardinals. Porter became a free agent after the season and signed with the New York Yankees on November 18. He was released by the Yankees on July 22, 2005, after batting only .181 combined for Double-A and Triple-A. On July 25, he signed with the Arizona Diamondbacks and played for Triple-A Tucson, becoming a free agent after the season.