The Twenty-First Canadian Ministry was the cabinet chaired by Prime Minister Joe Clark. It governed Canada from 4 June 1979 to 3 March 1980, including all of the 31st Canadian Parliament. The government was formed by the Progressive Conservative Party of Canada.

The Twenty-Second Canadian Ministry was the second cabinet chaired by Prime Minister Pierre Trudeau. It governed Canada from 3 March 1980 to 30 June 1984, including most of the 32nd Canadian Parliament. The government was formed by the Liberal Party of Canada. Trudeau was also Prime Minister in the 20th Canadian ministry (1968–1979).