Admiral J.R. Jennings was a late 23rd century Starfleet flag officer assigned to the Starfleet Academy's Starfleet Training Command. Jennings served as Director of Educational Services.
In 2285, Jennings was listed on a directory placard found on the 2nd level of Starfleet Training Command. He had an office in room 202. (Star Trek II: The Wrath of Khan)