Newry and Mourne Area D was one of the six district electoral areas in Newry and Mourne, Northern Ireland which existed from 1973 to 1985. The district elected seven members to Newry and Mourne District Council, and formed part of the Armagh constituencies for the Northern Ireland Assembly and UK Parliament, and part of the South Down constituencies for the Northern Ireland Assembly and UK Parliament.
It was created for the 1973 local elections, and contained the wards of Ballybot, Bessbrook, Daisy Hill, Derrymore, Drumalane, Fathom and Tullyhappy. It was abolished for the 1985 local elections with 2 wards going to The Fews DEA, 4 to the Newry DEA and Fathom to Slieve Gullion DEA.