George S. E. Vaughn (sometimes spelled George Vaughan or George E. Vaughn) (1823 – August 26, 1899) was a convicted Confederate spy during the American Civil War who claimed to have been pardoned by Abraham Lincoln an hour before Lincoln's assassination in the President's last official act. According to his obituary, Vaughn was born in Virginia and moved to Canton, Missouri. He was recruited into the Confederate Missouri State Guard by Martin E. Green, brother of U.S. Senator James S. Green. After the war, Vaughn moved to Maryville, Missouri, where he died in 1899.