William O'Sullivan (politician)
William O'Sullivan was an Irish politician and medical doctor. He was a Cumann na nGaedheal member of Seanad Éireann from 1922 to 1936. He was first elected to the Seanad in 1922 for 9 years and was re-elected in 1931 for 6 years. He served until the Free State Seanad was abolished in 1936.