Davis ministry

Date formedMarch 1, 1971 (1971-03-01)

Date dissolvedFebruary 8, 1985 (1985-02-08)

Monarch

• Elizabeth II

Lieutenant Governor

• William Ross Macdonald (1971-1974)
• Pauline Mills McGibbon (1974-1980)
• John Black Aird (1980-1985)

Davis ministry
17th ministry of Ontario
Premier Bill Davis in 1979
Date formed	March 1, 1971 (1971-03-01)
Date dissolved	February 8, 1985 (1985-02-08)
People and organisations
Monarch	Elizabeth II
Lieutenant Governor	William Ross Macdonald (1971-1974) Pauline Mills McGibbon (1974-1980) John Black Aird (1980-1985)
Premier	Bill Davis
Deputy Premier	position created Bob Welch (1977-1985)
Member party	PC Party
Status in legislature	Majority (1971-1975; 1981-1985) Minority (1975-1981)
Opposition party	Liberal, Ontario New Democratic Party
Opposition leader	Robert Nixon (Liberal, 1971-1975) Stephen Lewis (NDP, 1975-1977) Stuart Lyon Smith (Liberal, 1977-1981) Robert Nixon (Liberal, 1982) David Peterson (Liberal, 1982-1985)
History
Elections	1971, 1975, 1977, 1981
Legislature term	28th Parliament of Ontario 29th Parliament of Ontario 30th Parliament of Ontario 31st Parliament of Ontario 32nd Parliament of Ontario
Incoming formation	1971 PC leadership convention
Outgoing formation	resignation
Predecessor	Robarts ministry
Successor	Miller ministry

The Davis ministry was the combined cabinet (formally the Executive Council of Ontario) that governed Ontario from March 1, 1971, to February 8, 1985. It was the longest-lived ministry of Ontario in the 20th century.

It was led by the 18th Premier of Ontario, Bill Davis. The ministry was made up of members of the Progressive Conservative Party of Ontario, which commanded at first a majority, and then a minority, before returning at last to majority status in the Legislative Assembly of Ontario.

The ministry replaced the Robarts ministry following the resignation of Premier John Robarts and the 1971 PC leadership convention. The Davis ministry governed through the last few months of the 28th Parliament of Ontario, through the entirety of the 29th, 30th, and 31st Parliaments of Ontario, and most of the 32nd Parliament of Ontario.

Davis resigned as Premier of Ontario in 1985 and was succeeded as Premier of Ontario by David Peterson.