James Franklin "Frank" Caldwell Jr. (born March 24, 1959) is a retired admiral in the United States Navy who last served as director of the Naval Nuclear Propulsion Program, a job once held by the program's creator, Admiral Hyman G.

[4] From August 31, 2022 to his retirement, Caldwell was 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.

[6] Caldwell’s early sea tours include serving in both the Atlantic and Pacific Fleets.

Caldwell assumed his duties as the seventh director of Naval Reactors on August 14, 2015, normally an eight-year term.

[3] This article incorporates public domain material from United States Navy Biography, Vice Admiral James F. Caldwell Jr., Naval Inspector General.