Mark Gruner (born December 29, 1958) is an American former actor.
He played Robert Mueller in A Little Game (1971), by Paul Wendkos,[1][2] and Perron in The Tribe (1974), by Richard A. Colla.[3] His final and most notable role was Mike Brody in Jaws 2 (1978).[4][5] His late brother, David Gruner (1957–2009), was also an actor.[6]