The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Accessory items (146 members)
- Acquired through (3 members)
- Adamantine Forge (1 member)
- Adamantite or Titanium Forge (2 members)
- Alchemaster AI NPCs (1 member)
- Alchemator (9 members)
- Alchemist items (16 members)
- Alchemist weapons (0 members)
- Alchemy Station (3 members)
- Alchemy Table (1 member)
- Altar (1 member)
- Altar of Enchantments (12 members)
- Ammunition items (4 members)
- Amulets (2 members)
- Ancient Dragon AI NPCs (1 member)
- Ancient Manipulator (41 members)
- Ancient Vision AI NPCs (1 member)
- Andas AI NPCs (1 member)
- Angry Nimbus AI NPCs (1 member)
- Anicent Manipulator (1 member)
- Anvil (2 members)
- Armor (4 members)
- Armor items (40 members)
- Armor sets (15 members)
- Article management templates (3 members)
- Athiest (1 member)
- Autohammer (1 member)
- Axes (3 members)
- Background Object items (1 member)
- Banner images (18 members)
- Bar items (5 members)
- Bars (6 members)
- Bat AI NPCs (3 members)
- Biome Mimic AI NPCs (3 members)
- Blast Furnace (4 members)
- Block items (1 member)
- Blood Moon NPCs (3 members)
- Boss NPCs (38 members)
- Boss Part NPCs (1 member)
- Boss Servant NPCs (2 members)
- Boss Summoning items (1 member)
- Bows (6 members)
- Brick items (1 member)
- Broadswords (22 members)
- Buff Potions (1 member)
- Buff images (4 members)
- Buff potion items (9 members)
- By Hand (38 members)
- Candidates for deletion (28 members)
- Candidates for speedy deletion (0 members)