Thomas O'Dea, Bishop of Clonfert and Bishop of Galway (7 January 1858 – 9 April 1923) was born in Carron, Kilfenora, County Clare, and educated in Ennis and Maynooth. He was ordained on 25 June 1882 for the Diocese of Galway. He was a member of staff at Maynooth, from the date of his ordination; and served as Vice-President from 1894. He was named Bishop of Clonfert on 16 June 1903, replacing Dr. Healy. He became Bishop of Galway on 29 April 1909.