First officer

On ships, the first officer is the second-in-command, acting out the captain's orders and advising him or her. In Starfleet, this function is usually accompanied by the rank of commander or lieutenant commander. First officers may also be referred to as executive officers.

The first officer is nominally responsible for the smooth running and organization of a ship or starbase, and will often be head of his/her own Executive Department/Division, whose officers and crew - primarily with the yeoman designation - manage many of the day-to-day administrative tasks for the XO. (The Exec. Dept. would, for instance, provide the captain with a personal assistant).

Notable First officers

 * Angelica Bennett
 * USS Tamerlane (NCC-510)
 * Mercedes Underwood
 * USS Intrepid (NCC-1738) (2270-2272)
 * Aristotle Enfield
 * USS Intrepid (NCC-1738)
 * Shenar
 * USS Star League (NCC-2101)
 * Me-Ar Karole
 * USS Hannibal (NCC-512)
 * T'Pere
 * USS Hermes (NCC-585)
 * Robert Cash
 * USS Bellatrix (NCC-1832)
 * William Cochrane
 * USS Sol (NCC-1733)
 * Jonathan Sullivan
 * Starbase 134
 * Jenna Carson
 * USS Baldwin (NCC-2013) (2374)
 * Susan Cassoday
 * USS Ottawa (NCC-75057) (2377-)
 * Chris Clow
 * Poseidon
 * Owen Kyle
 * USS Chimera (NCC-11555)
 * Sonya Fiehrer
 * USS Winchester (NCC-68169) (2377-)
 * William "Bill" Gee
 * USS Lexington (NCC-1709) (2286- 2309)
 * Mandy Guilmain
 * Stoneship (2402-)
 * Jennifer Hurst
 * USS Columbia (NCC-1812)
 * Patrick Ingrum
 * USS Hastings (NCC-68059) (2373-2374)
 * K'danz
 * USS Dauntless (NCC-75310)
 * Jack Keller
 * USS Dallas (NCC-2019) (2377-2382)
 * USS Horizon (NCC-91901) (2383- )
 * Faith Kingsford
 * USS Mercutio (NCC-4482)
 * Lara
 * USS Hathaway (NCC-2593)
 * Breawyn Lem
 * USS Independence (NX-90201) (2381-2382)
 * Adam Lebin
 * USS Defiant (NCC-74205)
 * Damien Lucifel
 * USS Striker (NCC-63420) (2375-2386)
 * Jennifer Morgan
 * USS Striker (NCC-63420 (NCC-63420)) (2386-)
 * Tom Paris
 * USS Voyager (NCC-74656) (2378- )
 * Jaimie Petrelli
 * USS Baldwin (NCC-2013) (2375-)
 * David Quinn
 * USS Avenger (NCC-75461) (2389-)
 * Taev Radaik
 * RIS (2384-2389)
 * Catalena Rinne
 * Enterprise
 * Solen
 * USS Prometheus (NX-59650) (Prometheus)
 * Carl Stoeffles
 * USS Justice (NCC-556)
 * Sulivac
 * Stoneship (2401-2402)
 * Robert Tacket
 * USS Farragut (NCC-1647)
 * Teshurr
 * USS Crusader (NCC-51492) (2386-)
 * Bernie Tyler
 * USS Ottawa (NCC-75057) (2374-2377)
 * Trevak
 * USS Gustav P. Remington (NX-86753) (2383- 23xx)
 * Robert Tuff
 * USS Clark (NCC-91075) (2377-2378)
 * USS Pioneer (NCC-1084) (2381- )
 * Andrew Miller
 * USS Valkyrie (NCC-2590)
 * Tesjha Phohl
 * USS Kagoshima (2407-?)
 * USS George Hammond (?-2409)
 * USS Bajor (2409- )
 * Sarsachen tr'Sauringar
 * (2409- )