Stephen Augustus Hurlbut (November 29, 1815 – March 27, 1882), was an attorney and politician, who commanded the U.S. Army of the Gulf in the American Civil War. Afterward, he continued to serve as a politician and also as a diplomat. Although born and educated in the South, his parents were from the North and his father was a Unitarian minister. After passing the bar, Hurlbut moved at the age of 30 to Illinois to set up a practice. There he married and had a family.