Companies
- SEGA Corporation
- SEGA Europe
- SEGA Japan
- SEGA of America
- SEGA Sammy Holdings
- Serenity Forge
- Shared Memory
- Sharkmob
- Shedworks
- Shift
- Shift Up Corporation
- Shining Rock Software
- Shiny Entertainment
- Shiro Games
- Shiro Unlimited
- Shueisha Games
- SI Games
- SIE Japan Studio
- SIE Santa Monica Studio
- Sierra Entertainment
- Silicon Knights
- Simogo
- Skybound
- Skydance Interactive
- Skydance New Media