James Moffat Douglas (May 26, 1839 – August 19, 1920) was a farmer, missionary and politician from western Canada.

The son of John and Euphemia (Moffat) Douglas, he was born and received his early education in Linton, Bankhead, Roxburghshire in Scotland, and came with his parents to settle on a small farm near Cambray, Ontario, in 1851.

He defeated William McDonald, who had been acclaimed as the riding's Member of Parliament in the previous election.

Douglas won under the Liberal Party of Canada banner, but also had strong backing from the local farmers' organization, the Patrons of Industry.

Douglas was appointed to the Senate of Canada to represent the province of Saskatchewan on the advice of Prime Minister Wilfrid Laurier on March 8, 1906.