John Martin Mark (17 January 1873 – 5 January 1948) was a Northern Ireland Unionist politician and solicitor. He was born in Artidillon, County Londonderry, the son of Presbyterian Minister John Mark and Jane Martin. He was married in 1905 to Jane Guthrie, with whom he raised a family. He was a resident magistrate from 1933 to 1943. He died 5 January 1948