The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Team Remix Heart (11 members)
- Tebasaki (3 members)
- Teddie (41 members)
- Telephone Card (5 members)
- Template documentation (1 member)
- Template documentation pages (9 members)
- Template subpages (1 member)
- Templates (86 members)
- Ten Sages (11 members)
- Tengu (1 member)
- Tenjo Amanohokosaka (125 members)
- Terms and Setting (44 members)
- Terumen (28 members)
- The Diary Characters (3 members)
- The Gate (84 members)
- The Origin (4 members)
- The Puppeteers Characters (2 members)
- The Wheel of Fortune Characters (13 members)
- Timelines (1 member)
- Titles (1 member)