Larne Area B was one of the three district electoral areas in Larne, Northern Ireland which existed from 1973 to 1985. The district elected four members to Larne Borough Council, and formed part of the North Antrim constituencies for the Northern Ireland Assembly and UK Parliament.
It was created for the 1973 local elections, and contained the wards of Ballycarry, Glynn, Island Magee and Kilwaughter. It was abolished for the 1985 local elections and replaced by the Larne Lough DEA.