William James Doig (May 16, 1867[1] – May 9, 1924[2]) was a merchant and political figure in Manitoba.
He represented Russell from 1903 to 1907 in the Legislative Assembly of Manitoba as a Liberal.
He was born in Owen Sound, Ontario, of Scottish descent.
He operated a hardware store in Russell, Manitoba, first built on the site of the former Hudson's Bay Company post.
Later, he also sold farm implements, furniture and automobiles.