Staats Long Morris (27 August 1728 Morrisiana, New York – 28 January 1800 Quebec, Canada) was an American colonist who served as a major-general in the British army during the American Revolution. He was the grandson of Lewis Morris (the first governor of New Jersey), the brother of Lewis Morris (a signer of the Declaration of Independence), and the half-brother of Gouverneur Morris (an author of the United States Constitution). Morris became a member of the British Parliament, representing Elgin Burghs. He was buried in an unmarked grave in the nave of Westminster Abbey in 1800.