Ambrose Powell Hill, Jr. (November 9, 1825 – April 2, 1865), is a career U.S. Army officer in the Mexican–American War and Seminole Wars and a Confederate general in the American Civil War.

He gains early fame as the commander of the "Light Division" in the Seven Days Battles and becomes one of Stonewall Jackson's ablest subordinates, distinguishing himself in the 1862 battles of Cedar Mountain, Second Bull Run, Antietam, and Fredericksburg.

Following Jackson's death in May 1863 at the Battle of Chancellorsville, Hill is promoted to lieutenant general and commanded the Third Corps of Robert E. Lee's Army of Northern Virginia, which he leads in the Gettysburg Campaign and the fall campaigns of 1863.

His command of the corps in 1864–65 is interrupted on multiple occasions by illness, from which he does not return until just before the end of the war, when he is killed during the Union Army offensive at the Third Battle of Petersburg.

Hill is usually referred to as A. P. Hill, to differentiate him from another prominent (unrelated) Confederate general, D. H. Hill.