Arthur St. Clair (March 23, 1737 [O.S. 1736] – August 31, 1818) was a Scottish-American soldier and politician. Born in Thurso, Scotland, he served in the British Army during the French and Indian War before settling in Pennsylvania, where he held local office. During the American Revolutionary War, he rose to the rank of major general in the Continental Army, but lost his command after a controversial retreat from Fort Ticonderoga.