Companies
- Ivory Tower
- Jackbox Games
- Jagex Games Studio
- Janco Partners
- Japan Studio
- Jason Oda
- Jerry Bruckheimer Games
- Jonathan Blow
- JoWooD Entertainment
- Juice Games
- Jump Over the Age
- Jumpship
- Junction Point
- Juniper Research
- Jupiter Corporation
- Just Add Water
- Just Flight
- K2 Network
- Kadokawa Games
- KAIKO
- Kairosoft
- Kakao Games
- Kalypso Media
- KAOLink
- Kaos Studios
- Kasedo Games
- Keen Games
- KeokeN Interactive
- Kepler Interactive
- Kickstarter
- Kilter Films
- Kinesthetic Games
- Kinetic Games
- King
- King Art Games
- Kite Games
- Kitfox Games
- Klei Entertainment
- Knights Peak
- Koch
- Koch Media
- Koch Media / Deep Silver
- Kodansha
- Koei
- Koei Tecmo
- Kojima Productions
- Konami
- Konami Digital Entertainment
- Kongzhong Corporation
- Kotake Create