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

• Wiki Club Jamia (6 members)
• Wikidata (1 member)
• Wikidata Sprint (2 members)
• Wikidata Sprint 2024 (2 members)
• Wikimania (1 member)
• Wikimedia Primer (1 member)
• Wikimedia Summit (1 member)
• Wikipedia citation administration (1 member)
• Wikipedia editor help (1 member)
• Wikipedia license migration templates (1 member)
• Wikipedia message box parameter needs fixing (1 member)
• Wikiversary (2 members)
• Wikiversary 2026 (1 member)