John Lynch (born 26 December 1961) is an Irish actor from Northern Ireland.

John Lynch was born in the United Kingdom and moved to his father's native home in Corrinshego, County Armagh, near Newry, County Down in Northern Ireland as a child. He attended St Colman's College, Newry, a Catholic school. Lynch has said that his family was not political although his grandfather also called John was a candidate in the 1959 and 1964 general election in the Parliament constituency of Armagh. He has said his family were "affected" by the Troubles. His mother is Italian, and he is the brother of actress Susan Lynch. He is also a novelist. His first novel, Torn Water, was published in November 2005 by the Fourth Estate, a literary imprint of Harper and Collins, and his second, Falling out of Heaven, was published on 13 May 2010 by the same publisher.

Lynch has appeared in numerous films related to Northern Ireland's problems, such as Cal, In the Name of the Father, The Railway Station Man, Nothing Personal and Some Mother's Son, as well as the Irish-themed film Evelyn, with Pierce Brosnan, Aidan Quinn and Julianna Margulies. He starred as Gwyneth Paltrow's boyfriend in Sliding Doors, and as a supporting actor in Derek Jarman's Edward II.