Newry and Mourne Area B was one of the six district electoral areas in Newry and Mourne, Northern Ireland which existed from 1973 to 1985.
The district elected four members to Newry and Mourne District Council, and formed 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 Ballycrossan, Clonallan, Rostrevor and Seaview.
It was abolished for the 1985 local elections and replaced by the Crotlieve DEA.
1977: 2 x SDLP, 1 x Alliance, 1 x Independent Nationalist 1981: 4 x SDLP 1977-1981 Change: SDLP (two seats) gain from Alliance and Independent Nationalist 1973: 2 x SDLP, 1 x Alliance, 1 x Independent Nationalist 1977: 2 x SDLP, 1 x Alliance, 1 x Independent Nationalist 1973-1977 Change: No change 1973: 2 x SDLP, 1 x Alliance, 1 x Independent Nationalist