Third Canadian Ministry

3rd Canadian Ministry 3e conseil des ministres du Canada
3rd ministry of Canada

Date formed	17 October 1878
Date dissolved	6 June 1891
People and organisations
Head of state	Queen Victoria
Head of government	John A. Macdonald
Member party	Liberal-Conservative Party
Opposition party	Liberal Party of Canada
Opposition leader	Alexander Mackenzie (1878–1880) Edward Blake (1880–1887) Wilfrid Laurier (1887–1896)
History
Election(s)	1878, 1882, 1887, 1891
Legislature term(s)	4th Canadian Parliament 5th Canadian Parliament 6th Canadian Parliament 7th Canadian Parliament
Predecessor	2nd Canadian Ministry
Successor	4th Canadian Ministry

The Third Canadian Ministry was the second cabinet chaired by Prime Minister Sir John A. Macdonald. It governed Canada from 17 October 1878 to 6 June 1891, including the 4th, 5th, and 6th Canadian Parliaments, as well as the first three months of the 7th. The government was formed by the Liberal-Conservative Party in coalition with the old Conservative Party of Canada. Macdonald was also Prime Minister in the First Canadian Ministry.