The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- ADP images (1 member)
- ADP set (4 members)
- ARC-L1 Wide Forest Station images (1 member)
- ARC-L1 images (1 member)
- ARC-L2 images (1 member)
- ARC-L3 images (1 member)
- ARC-L4 images (1 member)
- ARC-L5 images (1 member)
- ARGO Astronautics (0 members)
- ATVS Repeater images (1 member)
- AVS-E set (2 members)
- A Human Perspective (0 members)
- A Separate Law (0 members)
- Abbreviations (51 members)
- Aberdeen (5 members)
- Aberdeen images (23 members)
- Ace Astrogation (4 members)
- Aciedo Station images (1 member)
- Active Duty Military Characters (54 members)
- Active Political Office Holders (34 members)
- Active Talk Pages (10 members)
- Active for Squadron 42 (11 members)
- Active production (1 member)
- Add-ons (10 members)
- Adir images (6 members)
- Administration and sales centers (1 member)
- Administrators (1 member)
- Advertisement (0 members)
- Advocacy Archive (0 members)
- Advocacy Faction Characters (1 member)
- Aegis Dynamics (52 members)
- Aelanna Tesla Images (32 members)
- Aeroview Hangars (1 member)
- Agricultural supplies (4 members)
- Ail'ka System (10 members)
- Alejo Brothers (7 members)
- Alien Languages (1 member)
- Alien Races (6 members)
- Alien language templates (5 members)
- Alloys (4 members)
- Always Forward (0 members)
- Amon and Reese Co. (19 members)
- Angeli (1 member)
- Angeli images (1 member)
- Animus Missile Launcher (1 member)
- Animus Missile Launcher images (3 members)
- Anti-aircraft turrets (1 member)
- Anti-personnel mines (1 member)
- Anti-personnel turrets (1 member)
- Anvil Aerospace (32 members)
- AopoA (0 members)
- Aopoa (5 members)
- Apache License (5 members)
- Apartment Habs (4 members)
- Apocalypse Arms (15 members)
- Apocalypse Arms images (1 member)
- Apollo Images (2 members)
- Apollo Medivac images (16 members)
- Apollo Triage images (16 members)
- Apollo series (2 members)
- Aponte Explorer images (1 member)
- Appliance manufacturers (1 member)
- Appointment Missions (4 members)
- April Fool's (5 members)
- Ar (0 members)
- Ar-2 (0 members)
- ArcCorp (21 members)
- ArcCorp (planet) (1 member)
- ArcCorp AO Missions (13 members)
- ArcCorp images (29 members)
- Archangel Station images (1 member)
- Architecture images (22 members)
- Archon Base images (21 members)
- Arclight images (20 members)
- Arden-CL Backpack images (3 members)
- Arden-SL Helmet images (1 member)
- Arden-SL images (5 members)
- Arden-SL set (5 members)
- Area18 (3 members)
- Area18 images (110 members)
- Area 18 (3 members)
- Areas (1 member)
- Aremis (1 member)
- Aremis Post (0 members)
- Aremis images (4 members)
- Ares Inferno Images (2 members)
- Ares Inferno images (84 members)
- Ares Ion images (35 members)
- Ares inferno images (1 member)
- Ares series (2 members)
- Argo Astronautics (7 members)
- Argo Series (0 members)
- Argus Helmet images (1 member)
- Arial (2 members)
- Arial images (19 members)
- Aril Helmet images (1 member)
- Aril images (10 members)
- Aril set (5 members)
- ArmaMod (21 members)
- Armitage (planet) (1 member)
- Armor Shops (1 member)
- Armor images (10 members)
- Armor set (40 members)
- Armor set images (3 members)
- Arms armor (29 members)
- Arms armor images (18 members)
- Around The Verse (15 members)
- Around the Verse (15 members)
- Arrastra images (0 members)
- Arrow I images (1 member)
- Arrow images (64 members)
- Arrow series (0 members)
- Arrowhead Sniper Rifle images (24 members)
- Art (1 member)
- Article management templates (6 members)
- Article stubs (1,303 members)
- Articles with hatnote templates targeting a nonexistent page (66 members)
- Artificial Intelligence Characters (1 member)
- Artificial Planet (2 members)
- Artimex Helmet images (1 member)
- Artimex images (7 members)
- Artimex set (4 members)
- Artwork images (1 member)
- Ascension Astro (9 members)
- Ashana (1 member)
- Aspire Grand images (2 members)
- Assault rifles (6 members)
- Associated Sciences and Development (3 members)
- Asteroid Belt (51 members)
- Asteroid Cluster (12 members)
- Asteroid Formations (75 members)
- Astronomical Objects (686 members)
- Astronomy (2 members)
- Asura (1 member)
- Atlas-Class Cargo Ferry images (3 members)
- Atlas series (2 members)
- Attachment (1 member)
- Attrition Repeater images (2 members)
- Atzkav Electron Sniper Rifle images (7 members)
- Atzkav Sniper Rifle (1 member)
- Atzkav Sniper Rifle images (13 members)
- Audio templates (1 member)
- Aurora CL images (19 members)
- Aurora ES images (22 members)
- Aurora LN images (24 members)
- Aurora LX images (25 members)
- Aurora MR images (58 members)
- Aurora series (16 members)
- AutoWikiBrowser (0 members)
- AutoWikiBrowser images (2 members)
- Avalos Scout images (1 member)
- AvantX images (1 member)
- Avenger Stalker Images/ru (0 members)
- Avenger Stalker images (52 members)
- Avenger Titan Renegade Images (26 members)
- Avenger Titan images (29 members)
- Avenger Trainer images (1 member)
- Avenger Warlock images (11 members)
- Avenger paints (36 members)
- Avenger series (51 members)
- Aves Armor Set images (1 member)
- Aves Armor set (1 member)
- Aves Helmet images (1 member)
- Aves images (6 members)
- Avionics (1 member)
- Aztalan Helmet images (1 member)
- Aztalan images (15 members)
- Aztalan set (4 members)
- B0otyCall (0 members)
- BR-2 Shotgun (1 member)
- BR-2 Shotgun images (4 members)
- BRVS Repeater images (1 member)
- Babel - Users by language (10 members)
- Bacchus Flotilla images (1 member)
- Bacchus System (9 members)
- Backer rewards (19 members)
- Backpacks (15 members)
- Baijini Point images (2 members)
- Baker III images (1 member)
- Baker II images (1 member)
- Baker IV (1 member)
- Baker IV images (1 member)
- Baker I images (1 member)
- Baker System (13 members)
- Ballista images (17 members)
- Ballistic Cannon (15 members)
- Ballistic Gatling (12 members)
- Ballistic Repeater (7 members)
- Ballistic Scattergun (3 members)
- Balor HCH Helmet images (1 member)
- Banners (1 member)
- Banshee II images (1 member)
- Banshee IV images (1 member)
- Banshee I images (1 member)
- Banshee System (11 members)
- Banu (9 members)
- Banu Characters (5 members)
- Banu Flotilla (4 members)
- Banu Souli (11 members)
- Banu Station images (1 member)
- Banu Systems (7 members)
- Banu lockbox (4 members)
- Bar (5 members)
- Barrel attachments (17 members)
- Bars (7 members)
- Basilisk (15 members)
- Bastion (armor set) set (5 members)
- Battlecruisers (0 members)
- Battles (7 members)
- Battleship (0 members)
- Battleships (2 members)
- Beacon Undersuit images (21 members)
- Beacon armor images (1 member)
- Behring (6 members)
- Behring Applied Technology (95 members)
- Belligerent Duck (1 member)
- Bengal images (29 members)
- Beverage images (1 member)
- Bevic Group (1 member)
- Big Benny (1 member)
- Binary Star Systems (4 members)
- BlacJac Security Faction Characters (1 member)
- Black Hole (1 member)
- Black Prism (8x Telescopic) images (1 member)
- Blade images (45 members)
- Blue Triangle Inc. (7 members)
- Boilerplate Images (3 members)
- Bomb images (2 members)
- Bombs (1 member)
- Borea (2 members)
- Bounty Hunter Missions (41 members)
- Branaugh II (1 member)
- Branaugh III images (1 member)
- Branaugh II images (1 member)
- Branaugh I images (1 member)
- Branaugh System (9 members)
- Brand (1 member)
- Bremen Defense Force (1 member)
- Bremen III images (1 member)
- Bremen IV images (1 member)
- Bremen System (10 members)
- Brentworth Care Center images (1 member)
- Broad & Rabiee (1 member)
- Broad and Rabiee (4 members)
- Broken Moon images (4 members)
- Browse (13 members)
- Buccaneer images (63 members)
- Buccaneer series (0 members)
- Buloi Sataball Arena images (1 member)
- Bunker missions (13 members)