3rd Canadian Ministry

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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 organizations
Monarch	Victoria
Governor General	Marquess of Dufferin Duke of Argyll Marquess of Lansdowne Earl of Derby
Prime Minister	John A. Macdonald
Member party	Liberal-Conservative Party
Status in legislature	134 / 206 (1878–1882) 133 / 211 (1882–1887) 123 / 215 (1887–1891) 117 / 215 (1891) Majority
Opposition party	Liberal Party of Canada
Opposition leader	Alexander Mackenzie (1878–1880) Edward Blake (1880–1887) Wilfrid Laurier (1887–1896)
History
Elections	1878, 1882, 1887, 1891
Legislature terms	4th Canadian Parliament 5th Canadian Parliament 6th Canadian Parliament 7th Canadian Parliament
Incoming formation	1878 Canadian federal election
Outgoing formation	Death of John A. MacDonald
Predecessor	2nd Canadian Ministry
Successor	4th Canadian Ministry

The Third Canadian Ministry was the second cabinet chaired by Prime Minister 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.