Cormac Michael Breslin (25 April 1902 – 23 January 1978) was an Irish Fianna Fáil politician who served as Ceann Comhairle of Dáil Éireann from 1967 to 1973. He served as a Teachta Dála (TD) from 1937 to 1977. He was born in Bunbeg, Gweedore, County Donegal. He was educated at St Eunan's College, Letterkenny and, while Leas-Cheann Comhairle, attended the Golden Jubilee there in September 1956. In November 1931 he married Antoinette Wilman, and they had ten children.