General John Louis Piotrowski (born February 17, 1934) is a retired United States Air Force four-star general who served as Vice Chief of Staff, U.S. Air Force (VCSAF), from 1985 to 1987; and Commander in Chief, North American Aerospace Defense Command/Commander in Chief, U.S. Space Command (CINCNORAD/USCINCSPACE), from 1987 to 1990.