Ahn-Ahn was a Starfleet officer in the 24th century. This individual had served under Admiral Leyton.
In 2372, this individual was assigned to Facilities, Starfleet Command. The effective date of this assignment was 49258. This officer was one of over four hundred officers reassigned in a three week period by Leyton. Their name was listed in a personnel assignment log that was displayed on a screen in Benjamin Sisko's temporary office in Starfleet Headquarters. (DS9: "Paradise Lost", okudagram)
This character was only mentioned in writing.