Lt. Col. William Robert Royal (March 16, 1905 – May 8, 1997) was an American scuba diver in the United States Air Force and amateur archeologist. In the late 1950s, he and other scuba divers found artifacts and human bones from at least seven individuals in Warm Mineral Springs. A partially burned log found in association with some of the human bones was radiocarbon dated to about 10,000 years ago. If the bones were the same age as the log, then the bones were the oldest known evidence of human occupation in Florida at the time.