Glinsk (Irish: Glinsce, meaning "glen of the brambles") is a townland in the County Mayo Gaeltacht in Ireland. It is in the parish of Kilcommon and barony of Erris. Glinsk Mountain (304 metres) is a remote area of upland blanket bog with sea cliffs descending to Broadhaven Bay and continuing along the coast to a height of 255 metres at Benwee Head.