William Gambee Strong (June 21, 1819 – after 1881) was a merchant and political figure in Prince Edward Island.
He served as a member of the Legislative Council of Prince Edward Island for eight years.
Strong was educated in Saint John, New Brunswick and at a boarding school in Annapolis, Nova Scotia.
He served as a member of the province's Executive Council from 1873 until 1881, when he was named sheriff for Prince County.
His grandsons Heath and Ernest served in the Prince Edward Island assembly.