William Stewart (Northern Ireland senator)

William Stewart (born 1910 or 1911, died 1979) was a unionist politician in Northern Ireland.

Stewart studied at a technical college and ran before becoming a company director. For most of his life he owned a chemist/grocer's, Stewart & Chapmans based on Church St in Dungannon, Co. Tyrone. He joined the Ulster Unionist Party and was elected to the Senate of Northern Ireland in 1957, serving until its abolition in 1973. From 1960 to 1962, he was a Deputy Speaker of the Senate and also served as chairman of Dungannon Urban District Council.