- J'lang
- J'lenn
- J'mm T'las
- J'mpok
- J'naii
- J'naii (planet)
- J'naii Council
- J'naii system
- J'nek
- J'raal
- J'rak
- J'rgan
- J'tal
- J'van
- J-32291
- J-89473
- J.A. Lawrence
- J.A. Rosales
- J.B.S. Haldane
- J.B. Billington
- J.B. Stevens
- J.D. Mettler
- J.G. Hertzler
- J.J. Lendl
- J.K. Leland
- J.K. Woodward
- J.L. Kilgore
- J.M. DeMatteis
- J.M. Dillard
- J.M. Ford
- J.P. Farrell (22nd century)
- J.P. Hanson
- J.R.R. Tolkien
- J.R. Jennings
- J.R. Rasmussen
- J. Andrew Keith
- J. Chapman Shull
- J. David Grumm
- J. Downer
- J. Edgar Hoover
- J. Fiona McKenzie
- J. Longo
- J. Marie Sellers
- J. Mia Colt
- J. Mia Colt (mirror)
- J. Michael Reaves
- J. Michael Straczynski
- J. Mitchell
- J. Noah Kym
- J. Ramirez
- J. Ramirez (20th century)
- J. Robert Oppenheimer
- J. Steven York
- J. Tamara
- J. Tompson
- J. Whales
- J. Whiram
- J. Wintorm
- J. Wong
- J4N-47 Singularity
- J9108
- JEM Annexe
- JEM Avenge
- JEM Ballistic
- JEM Bhert
- JEM Bludgeon
- JEM Bolster
- JEM Brawn
- JEM Byter
- JEM Crosshair
- JEM Dread
- JEM Heghthor
- JEM Hither
- JEM Hoit
- JEM Kronig
- JEM Nether
- JEM Nevit
- JEM Nihilist
- JEM Stratus
- JEM Vantage
- JEM Veracity
- JInjoq bread
- J class (freighter)
- J class starship
- Ja'Gokor
- Ja'VaK class
- Ja'chuq
- Ja'nette Marratin
- Ja'risia
- Ja'rod
- Ja'rod, son of Duras
- Ja'rod, son of Torg
- Ja'rod, son of Torg (mirror)
- Ja'rod (disambiguation)
- Ja'rod (mirror)
- Ja'tesh
- JaQ Andrews
- Jaan Ashe
- Jaan Devin
- Jaan Holona
- Jaarg etDalka
- Jabak
- Jabara
- Jabari
- Jabberwocky
- Jabelon
- Jabilo M'Benga (Kelvin timeline)
- Jabilo M'Benga (mirror)
- Jabin
- Jabin (mirror)
- Jabor
- Jacarine
- Jach'Eng class
- Jach class
- Jack
- Jack (disambiguation)
- Jack Armstrong, the All-American Boy
- Jack Benny
- Jack Breshar
- Jack Butterworth
- Jack C. Haldeman II
- Jack Casden
- Jack Corrigan
- Jack Crusher (Ensign)
- Jack Crusher (mirror)
- Jack DiAngelo
- Jack Elliott
- Jack Emmett
- Jack Frost
- Jack Gaynor
- Jack Gorvoy
- Jack Henderson
- Jack Katz
- Jack Kerr
- Jack London
- Jack Nesvig
- Jack Ousmanova
- Jack Pack
- Jack R. Crusher
- Jack Ransom
- Jack Raymond
- Jack Somers
- Jack Thompson
- Jack Torrance
- Jack White
- Jack Winslow
- Jack cheese
- Jack of Diamonds
- Jackee Crowell
- Jackel
- Jacket
- Jackie Cassada
- Jackie Jones (23rd century)
- Jackie Jones (24th century)
- Jackie Pulaski
- Jackie Robinson
- Jackol
- Jackson
- Jackson (Lieutenant)
- Jackson (USS Courageous)
- Jackson (technician)
- Jackson Carter
- Jackson Corbert
- Jackson Keene
- Jackson Lanzing
- Jackson Mall
- Jackson McLain
- Jackson Roykirk
- Jacob (disambiguation)
- Jacob Barrows
- Jacob Buchert (23rd century)
- Jacob Clancy
- Jacob Kessler
- Jacob Kurtz
- Jacob McNeil
- Jacob Simon
- Jacob Smith
- Jacob Varis
- Jacob Walch
- Jacobs
- Jacobson
- Jacobson's Used Photons
- Jacov Quiller
- Jacqueline Kennedy
- Jacqueline Matheson
- Jacqueline Sharp
- Jacques Cousteau
- Jacques Foccart
- Jadar
- Jadar's battlecruiser
- Jadaral
- Jade
- Jade (alias)
- Jade Dixon
- Jadzia
- Jadzia (Defiant class)
- Jadzia (mirror)
- Jadzia Dax
- Jae
- Jae (disambiguation)
- Jae Aaron
- Jae Yates
- Jae Yi
- Jae Zsigray
- Jaed Maz
- Jaeih t'Radaik
- Jafira
- Jagged Fang
- Jagr
- Jagron
- Jaguar
- Jaguar (disambiguation)
- Jaguar XK120
- Jagul
- Jah
- Jaheel
- Jaheelah
- Jahn
- Jahson
- Jai
- Jai Chi-Ling
- Jaid
- Jailhouse Promise
- Jain Suni
- Jaix
- Jaiya
- Jajlo'Sto-Vo-Kor
- Jajlo'wov
- Jak Eisman
- Jakar class
- Jakara
- Jake (disambiguation)
- Jake Finnegan
- Jake Forbes
- Jake Hornberger (23rd century)
- Jake Hornberger (24th century)
- Jake Sisko
- Jake Stiles
- Jake Stutzman
- Jakerga
- Jakorski
- Jal
- Jal (disambiguation)
- Jal Par
- Jalak Su
- Jalanda
- Jalanda Forum
- Jalanda Midnight ale
- Jalanda spaceport
- Jalarin
- Jalas Dren
- Jalbador
- Jaleyl
- Jali'lar Kandowali
- Jalia
- Jalidor Lambda
- Jalik
- Jalinitir
- Jalira Tren
- Jalkaree
- Jam'pek
- Jam'teth
- Jamaharon
- Jamaica
- Jamal Edwards
- Jamala Mahendra
- Jamarta
- Jamay Pal
- Jambalaya
- Jambalaya à la Sisko
- James
- James (Lieutenant)
- James (disambiguation)
- James (duplicate)
- James Abelmare
- James Addink
- James Allen
- James Anderson
- James Armstrong
- James Atheling
- James Audry
- James Baldwin
- James Bennett
- James Blish
- James Brennan
- James Briton
- James Brown
- James Chung
- James Cocharal
- James Conway Raymond
- James Cook
- James Crichton
- James Davis
- James Dean
- James Doohan
- James Hammond
- James Holt Raymond
- James Horn
- James Hunter
- James J. Swann
- James Joyce
- James Kara
- James Kelly
- James Kirk
- James Kirk Christopher-Fontana
- James Komack
- James Kurland
- James L. Conway
- James L. Quinn
- James Leyton
- James Lovell
- James MacKinnon
- James McRobb
- James Moriarty
- James O'Brien
- James O'Connel
- James Paris
- James Paris Jr.
- James Patrick
- James Peterson
- James Smithson
- James Stewart
- James Swallow
- James T. Keeler
- James T. Kirk
- James T. Kirk's nephews
- James T. Kirk (Kelvin timeline)
- James T. Kirk (alternates)
- James T. Kirk (android)
- James T. Kirk (mirror)
- James T. Kirk (mirror Kelvin timeline)
- James T. Kirk Lecture Hall
- James Talenda
- James Thornhill
- James Turner
- James Turnman
- James Van Over
- James Venes
- James W. Fry
- James Wainwright
- James Wedgewood
- James Wells
- James Whittaker Munroe
- James Wykoff
- Jameson