Margaret Campbell (December 15, 1912 – April 19, 1999) was a politician in Ontario, Canada.
She was a Liberal member of the Legislative Assembly of Ontario who represented the downtown Toronto riding of St.
George.
Prior to her provincial role she served as a municipal councillor in Toronto from 1958 to 1962 and then as a member of the Board of Control from 1964 to 1969.
She ran for mayor of Toronto in 1969 but came in second to William Dennison.