Companies
- Schell Games
- Scopely
- Scorpion Masque
- SCS Software
- Seabaa Inc
- Seagate
- Seasonic
- Second Dinner
- Secret Character
- Secret Level
- Secret Mode
- SEGA
- SEGA Australia
- SEGA Corporation
- SEGA Europe
- SEGA Hardlight
- SEGA Japan
- SEGA of America
- SEGA Sammy Holdings
- Sennheiser
- Serenity Forge
- Shared Memory
- Sharkmob
- SharkNinja
- Shedworks