The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Sabre Images (36 members)
- Sabre Raven Images (35 members)
- Sabre series (23 members)
- Saga Datasystems (4 members)
- Saisei (1 member)
- Saisei images (1 member)
- Sakura Sun (19 members)
- Sakura Sun images (1 member)
- Salvage yards (4 members)
- Salvo images (14 members)
- San'tok.yāi images (23 members)
- Sandbox (1 member)
- Sangar Helmet images (1 member)
- Sarrab images (1 member)
- Satellite (1 member)
- Satellites (0 members)
- Sawtooth Combat Knife images (5 members)
- Sawtooth Knife images (1 member)
- Scalpel images (6 members)
- Scavenged (2 members)
- Scorpion GT-215 Gatling images (1 member)
- Scorpius Antares images (1 member)
- Scorpius Images (3 members)
- Scorpius images (85 members)
- Scorpius series (1 member)
- Scourge images (9 members)
- Scout (1 member)
- Scrap (3 members)
- Scythe images (26 members)
- Seal Corporation (10 members)
- Search Missions (1 member)
- Second Life images (1 member)
- Second Tevarin War Uniform images (5 members)
- Second Tevarin War Uniform set (6 members)
- Security Organizations (0 members)
- Security Post Kareah images (8 members)
- Security organizations (20 members)
- Security organizations images (1 member)
- Selene (1 member)
- Self-published work (5,099 members)
- Senator pro tempores (1 member)
- Senators (31 members)
- Seraphim Station images (0 members)
- Serialized Fiction (0 members)
- Service Beacon Missions (3 members)
- Settlement images (1 member)
- Settlements (9 members)
- Severus (1 member)
- Severus images (1 member)
- Shelters (16 members)