- J Salmon Ltd
- JAB
- Jabra
- Jabra B2B
- Jactalea
- JADA
- Jakks Pacific
- Jaleco
- JAM
- Jam Audio
- Jamara
- JAMBAG
- James Bond
- Jamo
- JANDUSOFT
- Janod
- Janome
- JANTEX
- japanese rare item
- Jardiaffaires
- Jardimeca
- Jargar
- Jarpa
- JARR
- Jarre
- Jarre Technologies
- JASHEN
- Jata
- Jawbone
- JAYB
- Jaybird
- Jaybrid
- JAYC0
- Jaym
- JB Systems
- JBC
- Jbl
- Jbl By Harman
- JCOTTON
- JDR Editions
- JE CHERCHE UNE IDEE
- Jean Claude Olivier
- JEAN DUBOST
- Jean Louis David
- Jedel
- Jepssen
- JERIKO SOFT
- Jeujura
- Jeux Enfants
- Jeux Famille
- Jeux FK
- Jeux Teens
- Jeux Vidéos
- JFGA
- Jikkyou Powerful Pro Yakyuu 2016 Powerful Pro Baseball 2016
- Jim Dunlop
- JINTU
- Jisson
- JJRC
- JK IMAGING COMPANY
- JLab
- JMlab
- JNOD
- JOAL
- Joby
- Jocca
- Joel Tjintjelaar
- John
- John Adams
- John Boos
- John Doe
- Johnny Brooks
- Johnny Loco
- Johntoy
- JOHO
- JOKER SRL
- JOOLA
- Jools
- Joseph Joseph
- JOSEPH JOSEPH DUO
- Joseph Maeser
- Jouceo
- Jouetprive
- JOUS
- Joustra
- Jowood
- JOYEUSE
- JRA
- JRSC
- JSPH
- Jsz
- Julbo
- JUMBO
- Jumbo Games
- Jumbo Spiele
- Jumper
- Jungle Speed
- Juniper Networks
- Jura
- Just Flight
- Just For Games
- JustForGames
- Jvc
- JXFA