William Thomas Henry (January 2, 1872 – September 11, 1952) was a politician, real estate agent and businessman in Alberta, Canada. He served numerous years on Edmonton City Council as an Alderman from 1900 to 1902 and later as mayor from 1914 to 1917. He also served as a member of the Legislative Assembly of Alberta from 1924 to 1926 sitting with the Liberal caucus.