A list of video game companies from Japan.
Wikipedia has a category for them.
- 07th Expansion
- 8ing/Raizing
- ACCESS CO., LTD.
- Access Games
- Acquire
- Aicom
- AliceSoft
- Allumer
- AlphaDream
- Ambrella
- Aquaplus
- Arc System Works
- Arika
- Artoon
- Arzest
- Atelier Double
- Bandai Namco Entertainment
- Binary Haze Interactive
- Birthday
- Bokeh Game Studio
- Broccoli
- Camelot Software Planning
- Capcom
- Carpe Fulgur
- Cave
- CAVYHOUSE
- Chilla's Art
- Cing
- Clap Hanz
- Clover Studio
- Compile
- Compile Heart
- CyberConnect2
- Cygames
- Dangen Entertainment
- Data East
- Dimps
- Dragami Games
- EasyGameStation
- Edelweiss
- ELF Corporation
- Falcom
- feelplus
- Flight-Plan
- Fortyfive - Originally known as AIM.
- Fox Eye
- FromSoftware
- Game Arts
- Game Freak
- Game Republic
- Game Studio
- Genius Sonority
- Genki
- gPotato
- Granzella
- Grasshopper Manufacture
- G.rev Ltd.
- Grezzo
- Gung Ho Online Entertainment
- HAL Laboratory
- Hi Corp
- Human Entertainment
- Idea Factory
- Imageepoch
- indieszero
- iNiS
- Intelligent Systems
- Inti Creates
- Irem
- Jaleco
- Jupiter Corporation
- Kairosoft
- Kaneko
- KAZe
- Kemco
- Key/Visual Arts
- Koei Tecmo
- Kojima Productions
- Konami
- Level-5
- LittleWing
- M2
- Mages
- Marvelous
- Media Vision
- Micronet
- Mistwalker
- NanaOn-Sha
- Natsume
- NCS
- Nintendo
- Nippon Ichi
- nitro+
- Now Production
- NTT Solmare
- Orange_Juice
- PlatinumGames
- Polyphony Digital
- Psikyo
- Q Entertainment
- Q-Games
- Red Entertainment
- Rejet
- Saurus
- Sega
- SIE Japan Studio
- SIMS Co Ltd
- SNK
- ADK - Also known as Alpha Denshi.
- Nazca Corporation
- Sora Ltd
- Spike Chunsoft
- Square Enix
- Sting Entertainment
- Success
- Sunsoft
- Tamsoft
- Team Ladybug
- Telenet Japan
- Toaplan
- Too Kyo Games
- Tose
- Treasure
- tri-Ace
- Twilight Frontier
- Type-Moon
- Universal Entertainment - Not to be confused with the other Universal.
- Vanillaware
- Vic Tokai
- Voltage, Inc.
- Westone Bit Entertainment
- ZOOM Inc.