Thomas O'Donnell (30 November 1871 – 11 June 1943) was an Irish nationalist politician of the Irish Parliamentary Party who served as Member of Parliament (MP) for West Kerry from 1900 to 1918 representing the constituency in the House of Commons of the United Kingdom of Great Britain and Ireland. He was an active promoter of agrarian reform, M.A. (R.U.I.), teacher, lawyer, chairman of the Tralee and Dingle Railway and later a prominent Irish Judge.