Larne Lough is a lough or inlet in County Antrim, Northern Ireland, near the town of Larne along Ireland's northeast coast. The lough is situated between Islandmagee (a peninsula) and the mainland.

Larne Lough is designated as an Area of Special Scientific Interest, Special Protection Area, and Ramsar Site in order to protect the wetland environment, particularly due to the presence of certain bird species and shellfish.

See also: List of Irish loughs

Loughs of County Antrim | Ramsar sites in Northern Ireland | Sites of Special Scientific Interest in Northern Ireland | Special Protection Areas in Northern Ireland