General John Dale Ryan (December 10, 1915 – October 27, 1983) was the seventh Chief of Staff of the United States Air Force. As chief of staff of the U.S. Air Force, General Ryan served in a dual capacity. He was a member of the Joint Chiefs of Staff which, as a body, acts as the principal military adviser to the president, the National Security Council, and the Secretary of Defense. In his other capacity, he was responsible to the Secretary of the Air Force for managing the vast human and materiel resources of the world's most powerful aerospace force.