The Willcock Ministry was the 19th Ministry of the Government of Western Australia, and was led by Labor Premier John Willcock. It succeeded the Second Collier Ministry on 27 August 1936, upon the resignation of Philip Collier as Premier on ill health grounds. It became the longest-serving Labor ministry in Western Australia.
The ministry was followed by the Wise Ministry on 3 August 1945, four days after Willcock resigned as Premier and handed over to the Deputy Premier, Frank Wise.