List of unnamed 22nd century Starfleet Headquarters personnel.
Admiral []

A female admiral
This female admiral served at Starfleet Command in the 2150s. (ENT: "Shadows of P'Jem", "Shockwave, Part II", "Regeneration", "First Flight", "Home")
Brig guard []

A brig guard
This crewman served as a brig guard at Starfleet Headquarters in 2154. He guarded Arik Soong's cell when Jonathan Archer visited him. (ENT: "Borderland")
Commodore []

Male commodore
This flag officer served as a commodore in Starfleet. (ENT: "Shockwave, Part II")
This commodore was present during Commodore Maxwell Forrest's dressing down of Commanders A.G. Robinson and Jonathan Archer in 2143, after the two stole the prototype starship NX-Beta. (ENT: "First Flight")
He was present during Captain Jonathan Archer's mission report in Admiral Forrest's office on Earth in 2154, in which Captain Archer explained the Xindi mission and the effect of trellium on the Vulcan crew of the Seleya. (ENT: "Home")
Grounds crewmen 1 []
These two operations division crewmen served at Starfleet Headquarters during the 2140s and 50s. (ENT: "Shadows of P'Jem", "Shockwave, Part II", "Regeneration", "First Flight", "Home")
Grounds crewmen 2 []
These three officers passed T'Pol and Ambassador Soval outside the Fleet Operations Center in April 2153. (ENT: "The Expanse")
Security guards []
These two security officers guarded the morgue unit with the corpse of the Xindi-Reptilian pilot inside a hall at Starfleet Headquarters in 2153. Both were armed with plasma rifles. Later, both passed T'Pol and Ambassador Soval outside of the Fleet Operations Center. (ENT: "The Expanse")
Security team []
These two security officers, armed with phase rifles, were part of Admiral Maxwell Forrest's away team, including Commander Williams, which investigated the disappearance of the Arctic Archaeology Team in the Arctic Circle on Earth in 2153. They arrived on board the shuttlepod NC-05 and moved into the empty research module in the A-6 excavation team base camp. It was full of snow without any biosigns. (ENT: "Regeneration")
Rear admiral []

A female rear admiral
This female rear admiral was a guest at the launch of Enterprise in 2151 and listened to the recorded speech of Zefram Cochrane. (ENT: "Broken Bow")
She welcomed the senior staff of Enterprise back home at the Bay Stadium on Earth. She was also one of the flag officers who listened to Captain Archer's mission report held at Admiral Maxwell Forrest's office. (ENT: "Home")
Vice admiral []

A Starfleet admiral
This Starfleet admiral was a guest at the launch ceremony of Enterprise in 2151 and listened to the recorded speech of Zefram Cochrane.(ENT: "Broken Bow")
He welcomed the senior staff of Enterprise back home at the Bay Stadium on Earth. He was also one of the flag officers who listened Captain Archer's mission report held at Admiral Maxwell Forrest's office. (ENT: "Home")