Gary Smyth (born 20 December 1969 in Belfast) is a Northern Irish former footballer and manager. He played as a centre back for Glentoran, Glenavon, Ballymena and Crusaders. He managed Harland & Wolff Welders F.C. from 24 November 2013 until he became the assistant manager of Glentoran on 24 May 2018. He became manager on 3 January 2019, replacing Ronnie McFall. He was replaced by Mick McDermott on 31 March 2019, and subsequently left the team on 21 May 2019.