The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Professors (2 members)
- Progressives (2 members)
- ProleWiki Finances (3 members)
- ProleWiki Funding Required (1 member)
- ProleWiki administrators (2 members)
- ProleWiki comrades (6 members)
- ProleWiki news (essays) (2 members)
- ProleWiki official pages (12 members)
- ProleWiki policies and guidelines (1 member)
- ProleWiki technical contributor (1 member)
- Proletariat (3 members)
- Propaganda (9 members)
- Propaganda posters (17 members)
- Protest tactics (2 members)
- Protests (8 members)
- Province-level administrative divisions (4 members)
- Provinces of China (9 members)
- Proxy wars (1 member)
- Prussian Army personnel (1 member)
- Pseudo-intellectuals (2 members)