Tomás Mac Eoin (born 1937) is an Irish sean-nós singer, actor, songwriter and poet. Also known as Tomás McKeown, he is from An Bóthar Buí in An Cheathrú Rua, Conamara, Galway, Ireland.
Known for his old-style or sean-nós singing, he was voted the best sean-nós singer in Ireland in 1967 at the Oireachtas competitions and won Corn Uí Riada.
