Tadhg Ó Donnchadha (1874 – 1949) was an Irish writer, poet, editor, translator and a prominent member of the Gaelic League (Conradh na Gaeilge) and the Gaelic Athletic Association. He was editor of Irisleabhar na Gaedhilge (The Gaelic Journal), Professor of Irish in University College Cork and Dean of the Faculty of Celtic Studies.