Glen F. Barker (born May 10, 1971) is an American former outfielder in Major League Baseball (MLB) who played three seasons for the Houston Astros.

Known for his speed on the basepaths (238 career minor league stolen bases) and in center field, Barker advanced as far as Triple A with the Toledo Mud Hens, but was selected by the Houston Astros from Tigers in the 1998 MLB Rule 5 draft.

In fact, journalist Dayn Perry jocosely noted the 1999 Astros, "in pursuit of arcane history, used eight players whose last names began with 'B.

'"[2] The eight included Bagwell, Paul Bako, Barker, Derek Bell, Sean Bergman, Lance Berkman, Biggio, and Tim Bogar.

[3] He appeared in two games against Atlanta Braves in the National League Division Series (NLDS), stealing a base and scoring a run.

He played 3 games with the Somerset Patriots an independent team in the Atlantic League before being picked up by the Baltimore Orioles and assigned to the AA Bowie Baysox.