Companies starting with S
- Saber Interactive
- Sad Cat Studios
- Samsung Electronics
- Santa Ragione
- SCS Software
- Seagate
- Second Dinner
- Secret Mode
- SEGA
- Semiwork
- SFB Games
- Sharkmob
- Shiro Games
- Sigono Inc
- Silverstring Media
- Simogo
- Siris Pendrake
- SK Hynix
- Ska Studios
- Skybound
- Skybound Tabletop
- Skydance New Media
- Slavic Magic
- Slitherine Software UK
- Sloclap
- Slormite Studios
- Smilegate
- Smilegate Entertainment
- SNEG
- SNK
- Snowman
- Soda Den
- Sold Out
- Sonic Team
- Sony
- Sony Interactive Entertainment
- Sony Japan Studio
- Special Effect
- Spiders
- Spiral Circus
- Spiral House
- Spotlightor Interactive
- Square Enix
- Square Enix Europe
- Squid Shock Studios
- Starsoft Entertainment
- State of Play
- StikiPixels
- Stitch Heads Entertainment
- Stonewheat & Sons
- straka.studio
- Strange Scaffold
- Striking Distance Studios
- Studio Any Percent
- Studio Circenses
- Studio Pixel Punk
- Stunlock Studios
- Subcreation Studio
- Sunny Side Up
- Superday
- Supergiant Games
- Supermassive Games
- SYCK