Michael Joseph Hayes (1 December 1889 – 11 July 1976) was an Irish Fine Gael politician who served as Ceann Comhairle of Dáil Éireann from 1922 to 1932, Minister for Foreign Affairs from August 1922 to September 1922 and Minister for Education January 1922 to August 1922. He served as a Teachta Dála (TD) for the National University constituency from 1921 to 1933. He was a Senator from 1938 to 1965. Hayes lost his Dáil seat at the 1933 general election, but was elected to Seanad Éireann in 1938 for Fine Gael. He remained a Senator until 1965, acting as leader of government and opposition there.