Albert Leopold Mills (May 7, 1854 – September 18, 1916) was a United States Army major general who was a recipient of the Medal of Honor for valor in action on July 1, 1898, near Santiago, Cuba.

After the Spanish–American War began in 1898, he was promoted to a captain of volunteers, and served as assistant adjutant general of the 2nd Cavalry Brigade.

He received the Medal of Honor for his bravery at the Battle of San Juan Hill near Santiago, Cuba, on July 1, 1898.

During his long term at West Point, he initiated numerous changes, including suppression of hazing, and the expansion of the size of the academy.

General Mills was struck ill and died suddenly while serving as chief of the Militia Bureau, on September 18, 1916.