The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- An-0 (1 member)
- Argentina (1 member)
- Bicolor cat (2 members)
- Black (5 members)
- British shorthair (1 member)
- Calico (5 members)
- Calico Cat (1 member)
- Calico cat (2 members)
- Canada (3 members)
- Cat (13 members)
- Cat Images (12 members)
- Cat sound video (1 member)
- Cat with birth defects (2 members)
- China (13 members)
- Color (1 member)
- Cornish Rex (3 members)
- Creative Commons Attribution-ShareAlike 2.0 files (1 member)
- Creative Commons Attribution-ShareAlike 3.0 files (2 members)
- Creative Commons Attribution-ShareAlike 4.0 files (50 members)
- Dead cat (15 members)
- Deaf cat (1 member)
- Deceased (1 member)
- Domestic shorthair (2 members)
- En (1 member)
- En-5 (1 member)
- Es (1 member)
- Es-1 (1 member)
- Female (24 members)
- File management templates (1 member)
- File namespace templates (2 members)
- General wiki templates (2 members)
- Golden chinchilla (1 member)
- Gray (3 members)
- Greece (2 members)
- Hatnote templates (1 member)
- He (1 member)
- He-3 (1 member)
- Japan (8 members)
- License Templates (2 members)
- Living cat (55 members)
- Logos (1 member)
- Lt (1 member)
- Lt-2 (1 member)
- Male (26 members)
- Milly (2 members)
- Minuet (1 member)
- Munchkin (2 members)
- No (1 member)
- No-4 (1 member)
- Orange (16 members)