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[1] 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.