John Christopher McGinley (born August 3, 1959) is an American actor who is best known for his role as Perry Cox on the NBC/ABC medical comedy-drama series Scrubs from 2001 to 2010.

He played Marine Captain Hendrix in the 1996 Hollywood Pictures film The Rock and the Highway Patrolman in the 2007 Touchstone Pictures film Wild Hogs. He is also the voice of White Stripe and Dr. Diente on the Disney Channel animated series Kim Possible and American Dragon: Jake Long, respectively.