The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Alkari leaders (10 members)
- Articles (9 members)
- Auxiliary templates (19 members)
- Bulrathi leaders (10 members)
- Candidates for deletion (2 members)
- Candidates for speedy deletion (0 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Colony leaders (69 members)
- Community (5 members)
- Copyright templates (10 members)
- Darlok leaders (10 members)
- Disambiguations (1 member)
- Documentation templates (9 members)
- Elerians leaders (10 members)
- Formatting templates (28 members)
- Front page sections (4 members)
- Gamepedia Blocks (3 members)
- Games (4 members)
- General wiki templates (1 member)
- Gnolam leaders (10 members)
- Hidden categories (1 member)
- Humans leaders (10 members)
- Icon templates (55 members)
- Image and media templates (1 member)
- Images (7 members)
- Images needing improvement (0 members)
- Independent leaders (10 members)
- Infobox templates (9 members)
- Klackon leaders (10 members)
- Leader portraits (150 members)
- Leaders (145 members)
- Leaders by disposition (3 members)
- Leaders by post (2 members)
- Leaders by race (14 members)
- Legal notices (3 members)
- Loyal leaders (70 members)
- Master of Orion (28 members)
- Master of Orion (1993) (10 members)
- Master of Orion 3 images (72 members)
- Master of Orion 3 races (12 members)
- Master of Orion II: Battle at Antares (18 members)
- Master of Orion II: Battle at Antares government (5 members)
- Master of Orion III (15 members)
- Master of Orion III government (1 member)
- Master of Orion III images (0 members)
- Master of Orion II colony leaders (36 members)
- Master of Orion II images (347 members)
- Master of Orion II leaders (68 members)
- Master of Orion II races (17 members)