Geoffrey S. Loomis (born December 22, 1970) is an American college baseball coach and former infielder.
Loomis is the head coach of the Portland Pilots baseball team.
As a freshman at the University of Portland in 1990, Loomis had a .397 batting average, a .303 on-base percentage (OBP) and a .329 SLG.
In the 1992 season as a junior, Loomis hit 11 home runs, 22 doubles, 1 triple and 56 RBIs.
Loomis began his professional career with the Southern Oregon A's of the Class A Northwest League, where he batted .254 with five home runs.