The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- NOISZ Songs (52 members)
- NOISZ Stellar Linkage Pack songs (1 member)
- NOISZ Story (36 members)
- NOISZ Wiki (4 members)
- NOISZ episode G (9 members)
- NOISZ episode G Characters (6 members)
- NOISZ episode G Original Songs (2 members)
- NOISZ episode G Songs (8 members)
- NOISZ episode G Story (9 members)
- NOISZ re:VERSE (46 members)
- NOISZ re:VERSE Blue Route (15 members)
- NOISZ re:VERSE Characters (6 members)
- NOISZ re:VERSE Extra Stages (3 members)
- NOISZ re:VERSE Original Songs (6 members)
- NOISZ re:VERSE Red Route (8 members)
- NOISZ re:VERSE Songs (13 members)
- NOISZ re:VERSE Story (23 members)
- Namespace manipulation templates (1 member)
- Navbox templates (1 member)
- Needs Work (56 members)
- Noise Beasts (13 members)
- Notice templates (9 members)
- Pages using duplicate arguments in template calls (2 members)
- Pages where template include size is exceeded (2 members)
- Pages with broken file links (14 members)
- Pages with ignored display titles (156 members)
- Pages with script errors (12 members)
- Quests (2 members)
- Quote templates (2 members)
- Song (1 member)
- Songs (126 members)
- Songs featuring /DJS\ (1 member)
- Songs featuring AAAA (1 member)
- Songs featuring Aamna (1 member)
- Songs featuring Akasake (1 member)
- Songs featuring Akira Complex (3 members)
- Songs featuring Alarmin (1 member)
- Songs featuring Allorium (1 member)
- Songs featuring Angela (10 members)
- Songs featuring Astra (1 member)
- Songs featuring BLACKTIGER (1 member)
- Songs featuring COD3C (1 member)
- Songs featuring Camellia (12 members)
- Songs featuring Codly (1 member)
- Songs featuring DM Ashura (4 members)
- Songs featuring DM DOKURO (1 member)
- Songs featuring Danyka Nadeau (1 member)
- Songs featuring Daryl Barnes (1 member)
- Songs featuring Dextre (1 member)
- Songs featuring Dimeng Yuan (1 member)