TheWillcock Ministry was the 19thMinistry of theGovernment of Western Australia, and was led byLabor PremierJohn Willcock. It succeeded theSecond Collier Ministry on 27 August 1936, upon the resignation ofPhilip Collier as Premier on ill health grounds. It became the longest-serving Labor ministry in Western Australia.

The ministry was followed by theWise Ministry on 3 August 1945, four days after Willcock resigned as Premier and handed over to the Deputy Premier,Frank Wise.

The following ministers served until the reconstitution of the Ministry on 21 April 1939, following the1939 state election. Selby Munsie, in parliament since 1911, died on 12 March 1938, creating a vacancy forAlexander Panton to be brought into the ministry. At the end of the term,Frank Troy, who had spent 35 years in Parliament as the member forMount Magnet, was appointedAgent-General for Western Australia in London. He resigned from the Ministry on 3 March 1939, but the Ministry was not reshuffled due to the impending election on 18 March, andFrank Wise adopted Troy's roles in an acting capacity.

On 18 April 1939, the Lieutenant-Governor, SirJames Mitchell, designated 8 principal executive offices of the Government under section 43(2) of the Constitution Acts Amendment Act 1899 and appointed the ministers to the positions.^[1] They then served until the reconstitution of the Ministry on 9 December 1943, following the1943 state election.

On 9 December 1943, the Lieutenant-Governor, SirJames Mitchell, designated 8 principal executive offices of the Government under section 43(2) of the Constitution Acts Amendment Act 1899 and appointed the ministers to the positions.^[2] They then served until the end of the Ministry on 3 August 1945, following the resignation ofJohn Willcock.

• Black, David;Bolton, Geoffrey (2001).Biographical Register of Members of the Parliament of Western Australia, Volume One, 1870–1930 (Revised ed.).Parliament House:Parliament of Western Australia.ISBN 0730738140.
• Hansard Indexes for 1936-1945, "Legislature of Western Australia"
• "Special".Western Australia Government Gazette. 27 August 1936. p. 1933:1936. Also 1938:462 (24 March 1938)

• Western Australian ministries
• Australian Labor Party ministries in Western Australia
• Ministries of George VI
• Ministries of Edward VIII

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