The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- A Pact of Flame and Sword (1 member)
- Abbots (1 member)
- Accountants (1 member)
- Acolytes (5 members)
- Actors (11 members)
- Actresses (2 members)
- Administrators (1 member)
- Admirals (4 members)
- Adventurer Groups (52 members)
- Adventurers (132 members)
- Aegiscasters (1 member)
- Aerial Scouts (1 member)
- Aeromancers (1 member)
- Afiele (7 members)
- Agelum (6 members)
- Aides (2 members)
- Ailendamus (42 members)
- Alchemists (16 members)
- Aliases (2 members)
- All-Range Duelists (1 member)
- Ambassadors (1 member)
- Animal Companions (13 members)
- Ant Farmers (1 member)
- Antinium (92 members)
- Antinium Crusade (11 members)
- Antinium Queens (10 members)
- Apostles (1 member)
- Appearances (998 members)
- Apprentices (3 members)
- Aquais (2 members)
- Arbalests (1 member)
- Arcane Warriors (1 member)
- Archers (12 members)
- Architects (2 members)
- Archived Chapters (66 members)
- Archived Interludes (3 members)
- Archived Lettered Chapters (16 members)
- Archived Wiki Projects (4 members)
- Archmages (8 members)
- Arcsinger's Bows (3 members)
- Areas (15 members)
- Armored Antinium (5 members)
- Armorers (2 members)
- Armors (5 members)
- Armsmasters of Steel (1 member)
- Art-by-Pirateaba (5 members)
- Art-by-Shane-Sandulak (4 members)
- Artien Family (1 member)
- Artifact Collectors (1 member)
- Artifacts (41 members)