DEVELOPERS
- K Amusement Leasing
- K2
- Kadokawa Shoten
- Kaga Tech
- Kalisto
- Kamui
- Kan's
- Kaneko
- Kaolink
- Karma Studios
- Kaze
- KCE Sapporo
- KCE Studios
- KCEA
- KCEJ
- KCEK
- KCEO
- KCET
- Kemco
- Keynet
- Khaos
- Kid
- Kiddinx
- King Records
- Kirat
- Kitty Group
- Klein Computer Entertainment
- Klon Co., Ltd.
- KnowWonder
- Kodansha
- Kodiak Interactive
- Koei
- Koei/Inis
- Kojima Productions
- Konami
- Konami Computer Entertainment Hawaii
- Konami Computer Entertainment Nagoya
- Konami Computer Entertainment Osaka
- Konami Computer Entertainment Shinjuku
- Kotobuki Systems
- Kouyousha
- Krea Medie A/S
- Krisalis Software
- Kritzelkratz
- Krome Studios
- Kronos Digital Entertainment
- KSS
- Kure
- Kuusou Kagaku
- Kyugo Boueki