Branch Admiral is a fictional military rank of Starfleet, in the universe of Star Trek. The rank was never spoken of in a live action production but has appeared in several unoffical publications regarding the first season of Star Trek:The Next Generation.

According to some sources, Branch Admiral is a rank between Vice Admiral and a full Admiral. It is bestowed upon senior flag officers of the Starfleet Staff Corps to include the Starfleet Surgeon General.

Many Star Trek fans speculate that, in the pilot Next Generation episode "Encounter at Farpoint", Leonard McCoy appears as a Starfleet Branch Admiral. In the episode, McCoy wears a grey sweater with triangular shoulder boards, possibly the only known on camera apperance of the insignia for Branch Admiral.

Later Star Trek productions gave no mention of the rank of Branch Admiral and the title was never deemed offical by the Star Trek producers.