The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Australian transport navigational boxes (1 member)
- Balwyn (25 members)
- Balwyn Library (1 member)
- Balwyn North (16 members)
- Bellevue Ward councillors (1 member)
- BoroondaraWiki (32 members)
- BoroondaraWiki policies (3 members)
- Boroondara City Council Elections (4 members)
- Boroondara Council facilities (1 member)
- Boroondara District Roads Board chairmen (2 members)
- Boroondara District Roads Board members (5 members)
- Boroondara Residents Action Group (1 member)
- Boroondara Road District (1 member)
- Boroondara Shire councillors (1 member)
- Borough of Camberwell and Boroondara councillors (2 members)
- Bridges (4 members)
- Bridges across the Yarra River (3 members)
- Bridges over the Eastern Freeway (3 members)
- Bridges over the Yarra River (4 members)
- Browse (8 members)