Commander Brannon Braga was a Starfleet officer during the 23rd and 24th centuries.
Braga was a member of Starfleet as early as stardate 9715.5, when he was listed among Fleet Operations officials on the dedication plaque for the USS Enterprise (NCC-1701-B). (Star Trek Generations)
In 2353, Braga was listed on a directory placard as having an office in room 35799 on Starbase 32. (TNG: "Violations")
Afterward, Braga was listed as a Starfleet Command official on the dedication plaque of several starships :
His name appeared also in the USS Voyager crew manifest in 2374. (VOY: "The Killing Game")