Group
- Scratchpad Publishing3
- Scribelife LLC2
- Sea Beast Puppet Company9
- Sea-Dog Game Studios9
- Seams Quirky14
- Seamstress Cooperative4
- Sean K Reynolds Games16
- Seattle Dorkfest1
- Seattle Zweihander1
- Secret Media Empire2
- Senjitsu Jidai4
- Sensible Object13
- Sentai Filmworks11
- Seraphim Guard6
- Set Enterprises4
- Set Enterprises, Inc.20
- Set Forth and The Adventure Society2
- Seventh Seal Press1
- Seventh Sphere Entertainment17
- Shades of Vengeance4