Patrick Harvey Ashby (October 17, 1890 – January 25, 1985) was a farmer, rancher, father, Hudson's Bay employee, soldier, sniper and Canadian federal politician.
Ashby joined the Canadian Forces and served overseas in World War I from 1914 to 1918.
Ashby left the Social Credit Party at the dissolution of Parliament on June 26, 1949.
He ran for re-election in the 1949 federal election under the Independent Social Credit banner.
Ashby was defeated by Liberal candidate Albert Frederick Macdonald, and did not attempt to return to federal politics.