George Nelson Morgan (September 7, 1825 – July 24, 1866) was a Union general in the American Civil War. Morgan was born in Ontario, Canada, then moved to Minnesota and took up shipbuilding. He joined the 1st Minnesota Volunteer Infantry, and advanced from Private to Colonel, commanding the 1st Minnesota at the Battle of Fredericksburg. Because of tuberculosis, he resigned, but later recovered sufficiently to command Fort Snelling, Minnesota, a training facility. He was promoted to Brevet Brigadier General in 1865, but the tuberculosis worsened and he died the next year at Fort Snelling.
His son, George H. Morgan, later became a cavalry officer, and was awarded the Medal of Honor.
Morgan Avenue in Minneapolis is named for George N. Morgan.