Mark Bonnar (born 19 November 1968) is a Scottish actor appearing as Duncan Hunter in the BBC One adaptation of Ann Cleeves's Shetland.
He is known for his roles as Bruno Jenkins in Casualty, Detective Finney in Psychoville, DCC Mike Dryden in Line of Duty, Colin Osborne in Unforgotten, Townsend in Battlefield 1 and Field in Summer of Rockets. Bonnar was born in Edinburgh and attended Leith Academy. He married actress Lucy Gaskell on 28 December 2007. Their first child, Martha, was born in July 2011, and their second, Samuel, in June 2015.