Sergeant James Fegan (1827 – June 25, 1886) was an American soldier in the U.S. Army who served with the 2nd and 3rd U.S. Infantry during the American Civil War, and Indian Wars. In March 1868, while escorting a powder train en route from Fort Harker to Fort Dodge, Kansas, he single-handedly prevented a mob from blowing up the train to free an army deserter. For his efforts, he received the Medal of Honor.