Alexander Peter Stewart (October 2, 1821 – August 30, 1908) was a Confederate military officer during the American Civil War and a college professor.

At the start of the American Civil War in 1861, although he was a strong anti-secessionist Whig politically, Stewart accepted a commission as major in the artillery of the Tennessee Militia on May 17.

On April 1, Stewart's men joined Charles Clark's division, in Leonidas Polk's corps, of Albert Sidney Johnston's Army of Mississippi, just in time for the Battle of Shiloh.

President Davis soon replaced Beauregard in favor of Braxton Bragg, who transported the army to Chattanooga, Tennessee, in preparation for his invasion of Kentucky.

In the Confederate Heartland Offensive, Stewart's brigade fought at the Battle of Perryville in Benjamin Cheatham's division of the army's right wing, commanded by Polk.

Stewart's division remained at Chattanooga and was assigned to John C. Breckinridge's corps, for whom he and his men fought on the extreme left of the Confederate line at the Battle of Missionary Ridge in November 1863.

Stewart fought at the battles of Rocky Face Ridge, Resaca, and New Hope Church, commanding a division in John Bell Hood's corps of Joseph E. Johnston's Army of Tennessee early in the Atlanta Campaign in 1864.

[1] Stewart next took part in the Battle of Peachtree Creek, taking possession of the home of Georgia's Quartermaster General, Ira Roe Foster, as his headquarters.

Georgia Historical Commission marker 060–90, erected at that location, states: "Site of the Ira R. Foster house which was occupied as headquarters by Gen. A. P. Stewart, [CSA] during military operations N. of Atlanta, July 16–21, 1864.