The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Shadow the Hedgehog (game) (6 members)
- Shorts (1 member)
- Shorts written by Ian Flynn (1 member)
- Shows (7 members)
- Sky theme (1 member)
- Software table cell templates (2 members)
- Sol Dimension inhabitants (1 member)
- Soldiers (1 member)
- Songbirds (1 member)
- Sonic's transformations (1 member)
- Sonic & All-Stars Racing Transformed (2 members)
- Sonic & Sega All-Stars Racing (4 members)
- Sonic & Sega All-Stars Racing tracks (1 member)
- Sonic 3D Blast (2 members)
- Sonic 3 & Knuckles (3 members)
- Sonic 3 & Knuckles locations (2 members)
- Sonic Advance (6 members)
- Sonic Advance 2 (5 members)
- Sonic Advance 3 (6 members)
- Sonic Adventure (4 members)
- Sonic Adventure 2 (6 members)
- Sonic Adventure 2: Battle (1 member)
- Sonic Adventure 2 alternate versions and ports (1 member)
- Sonic Adventure DX: Director's Cut (1 member)
- Sonic Adventure locations (1 member)
- Sonic Battle (2 members)
- Sonic Blast (2 members)
- Sonic Boom (TV series) (1 member)
- Sonic Boom (TV series) writers (2 members)
- Sonic Chaos (2 members)
- Sonic Chronicles: The Dark Brotherhood (5 members)
- Sonic Colors: Ultimate (1 member)
- Sonic Colors (Nintendo DS) (5 members)
- Sonic Colors (Wii) (4 members)
- Sonic Dash (2 members)
- Sonic Dream Team (3 members)
- Sonic Drift (1 member)
- Sonic Drift 2 (3 members)
- Sonic Forces (5 members)
- Sonic Forces: Speed Battle (3 members)
- Sonic Forces locations (1 member)
- Sonic Free Riders (3 members)
- Sonic Frontiers (6 members)
- Sonic Frontiers Skills (1 member)
- Sonic Frontiers locations (1 member)
- Sonic Generations (Nintendo 3DS) (8 members)
- Sonic Generations (Nintendo 3DS) locations (1 member)
- Sonic Generations (console/PC) (7 members)
- Sonic Generations (console/PC) locations (2 members)
- Sonic Generations (console/PC) texture images (1 member)