John Cain (born 26 April 1931) is a former Australian politician who was the 41st Premier of Victoria, in office from 1982 to 1990 as leader of the Labor Party.
During his time as premier, changes were enforced to the practices of various institutions in Melbourne which discriminated against women, while other reforms were introduced such as liberalised shop trading hours and liquor laws, equal opportunity initiatives, and occupational health and safety legislation.