Robert Ogden Tyler (December 31, 1831 – December 1, 1874) was an American soldier who served as a general in the Union Army during the American Civil War. He was commander of the Artillery Reserve of the Army of the Potomac at the Battle of Gettysburg in July 1863, where his artillery batteries played an important role in the Union victory. Tyler also led a division of heavy artillery turned infantry during the Overland Campaign of 1864. He was severely wounded at the Battle of Cold Harbor and relegated to administrative duties for the remainder of the war.