- DreamPunks
- DMD Enterprise
- Decent Machine
- Digital Fusion
- Dyrnwyn Games
- Digital Concepts
- Dialsoft
- D4O AG
- dekoga.d
- Dataweb, Inc.
- DDFG
- Devil Dog Games
- Donkey Coder Ltd.
- Donbass Games
- DiggerWorld Ltd.
- DysTop
- Drifter Entertainment, Inc.
- Denneko Yuugi
- D-Games
- Deuteranopia
- David Kilmer
- Drunk Animations
- Donnie D. Washington II
- Daniel Kim