Eugene Mullen (born c. 1898–date of death unknown) was an Irish Fianna Fáil politician.
Mullen was born in Roemore, Breaffy, County Mayo, to national-school teacher parents, Thomas and Mary. A schoolteacher by profession, he was elected to Dáil Éireann as a Fianna Fáil Teachta Dála (TD) for the Mayo South constituency at the June 1927 general election. He lost his seat at the September 1927 general election having only served 3 months as a TD.
Mullen subsequently became a professor. Later, he joined the Order of the Discalced Carmelites, assuming the name Fr Ephraim.
He was a younger brother to Thomas Mullen, Teachta Dála (TD) for the Dublin County constituency from 1938 to 1943.