Reuben F. Maury (1824 – 1906) was a colonel of the 1st Oregon Cavalry during the American Civil War, and the last commander of the District of Oregon in 1865. Maury was a graduate of the United States Military Academy at West Point, where he and George E. Pickett were classmates. He was a veteran of the Mexican War, and became an Oregon pioneer in 1852. He was a major of the 1st Oregon Cavalry, eventually reaching the rank of colonel.