The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- The Beta Pirates (1 member)
- The Caprican (124 members)
- The Captain's Hand (71 members)
- The Comitat (5 members)
- The Dirteaters (32 members)
- The Enemy Within (2 members)
- The Eye of Jupiter (57 members)
- The Face of the Enemy (17 members)
- The Farm (49 members)
- The Gun on Ice Planet Zero (13 members)
- The Gun on Ice Planet Zero, Part I (52 members)
- The Gun on Ice Planet Zero, Part II (30 members)
- The Hand of God (0 members)
- The Hand of God (RDM) (84 members)
- The Hand of God (TOS) (118 members)
- The Heavens Will Rise (28 members)
- The Hub (42 members)
- The Imperfections of Memory (58 members)
- The Last Hiding Place (3 members)
- The Living Legend (3 members)
- The Living Legend, Part I (51 members)
- The Living Legend, Part II (40 members)
- The Long Patrol (73 members)
- The Lost Warrior (51 members)
- The Magnificent Warriors (98 members)
- The Man with Nine Lives (47 members)
- The Memory Machine (4 members)
- The Night the Cylons Landed (3 members)
- The Night the Cylons Landed, Part I (107 members)
- The Night the Cylons Landed, Part II (30 members)
- The Oath (38 members)
- The Passage (59 members)
- The Plan (133 members)
- The Reins of the Waterfall (1 member)
- The Resistance (5 members)
- The Return of Starbuck (28 members)
- The Road Less Traveled (25 members)
- The Road Less Travelled (1 member)
- The Son Also Rises (50 members)
- The Super Scouts (3 members)
- The Super Scouts, Part I (62 members)
- The Super Scouts, Part II (18 members)
- The Ties That Bind (50 members)
- The Tombs of Kobol (1 member)
- The Woman King (36 members)
- The Young Lords (44 members)
- There is Another Sky (44 members)
- Theta (4 members)
- Things We Lock Away (29 members)
- Think Tank proposals (63 members)
- Tigh (TOS) (1 member)
- Tigh Me Up, Tigh Me Down (35 members)
- Torn (56 members)
- Toys (23 members)
- Tracking categories (1 member)
- Twelve Colonies (49 members)
- Two For Twilly (1 member)
- Unfinished Business (27 members)
- Unfinished Business (Extended Version) (1 member)
- Unfinished podcasts (56 members)
- Units of Distance (8 members)
- Units of Energy (3 members)
- Units of Mass (2 members)
- Units of Measure (25 members)
- Units of Time (9 members)
- Unproduced Scripts (17 members)
- Unproduced content (45 members)
- Unproduced content (1980) (13 members)
- Unproduced content (TOS) (30 members)
- Unvanquished (50 members)
- User warning templates (10 members)
- Usernames banned (5 members)
- Usernames under review (7 members)
- Users supporting the WGA strike (5 members)
- Users under warning (0 members)
- V-world Gamers (6 members)
- V-world gamers (1 member)
- VHS (3 members)
- Valley of Darkness (123 members)
- Video Game (73 members)
- Vipers (30 members)
- Vipers (RDM) (20 members)
- Vipers (TOS) (8 members)
- War of the Gods (9 members)
- War of the Gods, Part I (36 members)
- War of the Gods, Part II (27 members)
- Water (4,358 members)
- Weapons (23 members)
- Weapons (RDM) (6 members)
- Weapons (TOS) (7 members)
- Weapons (TRS) (3 members)
- Wikipedia (0 members)
- Wikipedians (1 member)
- Writers (60 members)
- Writers (1980) (3 members)
- Writers (Caprica) (6 members)
- Writers (RDM) (26 members)
- Writers (TOS) (8 members)
- Writers (TRS) (2 members)
- You Can't Go Home Again (48 members)