Kilcommon is a civil parish in Erris, north Mayo consisting of two large peninsulas; Dún Chaocháin and Dún Chiortáin. It consists of 37 townlands, some of which are so remote that they have no inhabitants. Habitation is concentrated mainly along both sides of Sruwaddacon Bay which flows into Broadhaven Bay, in villages including Glengad, Pollathomas, Rossport, Inver and Carrowteige, and in the Glenamoy area further inland.