Thomas O'Donnell was an Irish politician. He was elected unopposed as a Sinn Féin Teachta Dála (TD) to the Second Dáil at the 1921 elections for the Sligo–Mayo East constituency. He supported the Anglo-Irish Treaty and voted in favour of it. He was re-elected as a pro-Treaty Sinn Féin TD at the 1922 general election. At the 1923 general election, he stood as a Cumann na nGaedheal candidate for the Leitrim–Sligo constituency but he was not elected.
- Occupation
- politician
- Position held
- Teachta Dála, Teachta Dála
- Citizenship
- Irish Republic, United Kingdom of Great Britain and Ireland, Irish Free State
- Born
- 1876
