The following categories exist on the wiki, and may or may not be unused.Also seewanted categories.

• Abstraction (3 members)
• Academia (1 member)
• Adoxaceae (1 member)
• Aerodinamika (1 member)
• Aesthetics (0 members)
• Aferika (3 members)
• Ai Vola Tabu (4 members)
• Ai Vola i Momani (1 member)
• Ailadi (1 member)
• Aisi kirimu (2 members)
• Aisi kirimu na sinucodo (1 member)
• Akusitiki (1 member)
• Alabania (2 members)
• Alga (1 member)
• All articles with failed verification (1 member)
• All articles with unsourced statements (2 members)
• All country data templates (86 members)
• All pages needing cleanup (1 member)
• Amerika (6 members)
• Anatidae (3 members)
• Anatomi (16 members)
• Andropogoneae (1 member)
• Angioloji (2 members)
• Apia (2 members)
• Apiaceae (1 member)
• Apioideae (1 member)
• Araceae (1 member)
• Archipelagoes of Fiji (1 member)
• Argentina (2 members)
• Article message templates with missing parameters (1 member)
• Articles requiring unit attention (1 member)
• Articles with failed verification from February 2016 (1 member)
• Articles with hatnote templates targeting a nonexistent page (1 member)
• Articles with invalid date parameter in template (3 members)
• Articles with short description (3 members)
• Articles with unsourced statements from Okotova 2021 (1 member)
• Articles with unsourced statements from September 2016 (1 member)
• Asteraceae (4 members)
• Astoloji (1 member)
• Astroloji (1 member)
• Audiology (1 member)
• Austria (1 member)
• Azerbaijan (1 member)
• Ba Province (1 member)
• Ba Yasana (3 members)
• Babel - Users by language (9 members)
• Babel box templates (5 members)
• Balavu (1 member)
• Bangladesh (1 member)
• Baqe (3 members)