James Franklin "Frank" Caldwell Jr. (born March 24, 1959) is an admiral in the United States Navy who currently serves as director of the Naval Nuclear Propulsion Program, a job once held by the program's creator, Admiral Hyman G. Rickover. He previously served as Naval Inspector General. Caldwell is currently the Navy's Old Goat, the longest serving United States Naval Academy graduate on active duty, having received the award and accompanying title from Admiral William K. Lescher on August 31, 2022.