Glengad is a Gaeltacht village in the parish of Kilcommon in northwest County Mayo, Ireland. It is also known as Dooncarton, a name which comes from an Iron Age tribal chieftain called Ciortan, a character who appears in the Ulster Cycle legend of the Táin Bó Flidhais.

Kilcommon is a civil parish in Erris, north County 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.