John Stuart (12 September 1780 - 14 January 1847) was a nineteenth century Canadian fur trader and explorer, employed by the North West Company. Stuart is best known as one of the two clerks (the other being James McDougall) who participated in Simon Fraser's explorations of present-day British Columbia, Canada from 1805 to 1808. After Fraser returned to his work in the Athabaska Department in 1809, Stuart was placed in charge of the New Caledonia District from its headquarters at Fort St. James. In this position, Stuart was instrumental in establishing a number of new posts, most notably Kamloops House. He was also instrumental in disrupting competition by John Jacob Astor's Pacific Fur Company. Stuart became a partner in the North West Company in 1813 and a Chief Factor in the Hudson's Bay Company after its merger with the North West Company in 1821.

Stuart is noted for his exploration of Fraser Lake, where he and Fraser built a post, now known as Fort Fraser. Stuart Lake and Stuart River, both in British Columbia are named for him.

At Stuart's initiative, his nephew Donald Smith (later Baron Mt. Royal and Strathcona) was persuaded to come to Canada, where he would play an instrumental role in the building of the Canadian transcontinental railroad.

John Stuart, born John Alfred Louden Croall (July 18 1898 - October 17, 1979), was a Scottish actor born in Edinburgh, Scotland. He appeared in two films directed by Alfred Hitchcock.

John Stuart (25 September 1718 – 21 March 1779) was a Scottish-born official of the British Empire in North America. He was the superintendent for the southern district of the British Indian Department from 1761 to 1779; his northern counterpart was Sir William Johnson.

Born in Inverness, by 1748 Stuart had emigrated to South Carolina, where he worked as a merchant. He became prominent in local affairs and in 1760 served as a militia captain in the Anglo-Cherokee War. Stuart was captured by the Cherokees, but was ransomed by Chief Attakullakulla and returned to South Carolina.

His familiarity with Native Americans and the frontier led to his appointment as superintendent in the Indian Department. His role was to help Great Britain and the colonies bring order to their relations with the southern Indians (the "Five Civilized Tribes"), and to prevent the recurrence of anti-British native confederations like the one that had produced Pontiac's Rebellion in 1763. Stuart's diplomacy was successful, and when the American Revolutionary War broke out in 1775, most native leaders in his area supported the British. During the war he fled to Georgia and then to Pensacola, Florida, where he died.

His home, built in 1772 in Charleston, is now known as the Colonel John Stuart House and was named a U.S. National Historic Landmark in 1973.