William John Patterson

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The Honourable William John Patterson
10th Lieutenant Governor of Saskatchewan
In office June 25, 1951 – February 3, 1958
Monarchs	George VI Elizabeth II
Governors General	The Viscount Alexander of Tunis Vincent Massey
Premier	Tommy Douglas
Preceded by	John Michael Uhrich
Succeeded by	Frank Lindsay Bastedo
6th Premier of Saskatchewan
In office November 1, 1935 – July 10, 1944
Monarchs	George V Edward VIII George VI
Lieutenant Governor	Hugh Edwin Munroe Archibald Peter McNab
Preceded by	James G. Gardiner
Succeeded by	Tommy Douglas
Leader of the Opposition
In office July 10, 1944 – August 6, 1946
Preceded by	John Brockelbank
Succeeded by	Walter Tucker
MLA for Pipestone
In office June 9, 1921 – June 19, 1934
Preceded by	Richard James Phin
Succeeded by	Riding abolished
MLA for Cannington
In office June 19, 1934 – April 2, 1949
Preceded by	Samson Wallace Arthur
Succeeded by	Rosscoe Arnold McCarthy
Personal details
Born	May 13, 1886 Grenfell, District of Assiniboia, North-West Territories
Died	June 10, 1976(1976-06-10) (aged 90) Regina, Saskatchewan, Canada
Political party	Liberal

William John Patterson (May 13, 1886 – June 10, 1976) was a Liberal politician and the sixth premier of Saskatchewan from 1935 to 1944. He was first elected to the Legislative Assembly of Saskatchewan in the 1921 election. He succeeded James G. Gardiner to become the province's first Saskatchewan-born premier.

Patterson's leadership was considered to be uninspired.^{[according to whom?]} He was unable to resist the Co-operative Commonwealth Federation's rise to power in the 1944 election under Tommy Douglas. Patterson's Liberals were reduced to five seats in the Legislature. He resigned as Liberal leader in 1946.

Patterson served as the tenth Lieutenant Governor of Saskatchewan from 1951 to 1958, becoming the first person to have been both Premier and lieutenant governor of the province.