John Adley Hull (August 7, 1874–April 17, 1944) was a Judge Advocate General in the U.S. Army and an associate justice of the Supreme Court of the Philippines. Hull was born in Bloomfield, Iowa to Civil War officer and longtime Iowa Congressman John A.T. Hull and his wife, Emma Gregory Hull. He received law degree from the University of Iowa College of Law. He married Norma Bowler King at Fort Meyers, Virginia, in 1919. She would divorce him on May 22, 1934, in Reno, Nevada. He died at Walter Reed Hospital in Washington, D.C. on April 17, 1944.