The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Cylon Military (RDM) (34 members)
- Cylon Military (TOS) (13 members)
- Cylon Religion (RDM) (13 members)
- Cylonic (1 member)
- Cylons (225 members)
- Cylons (1980) (8 members)
- Cylons (2003 Video Game) (15 members)
- Cylons (Deadlock) (18 members)
- Cylons (RDM) (135 members)
- Cylons (TOS) (67 members)
- Cylons (TRS) (4 members)
- Cylons (Video Game) (15 members)
- DVDs (42 members)
- DVDs (1980) (3 members)
- DVDs (RDM) (23 members)
- DVDs (Region 1) (15 members)
- DVDs (Region 2) (9 members)
- DVDs (Region 4) (9 members)
- DVDs (TOS) (9 members)
- Date/Time Related Templates (19 members)
- Daybreak (18 members)
- Daybreak, Part I (59 members)
- Daybreak, Part II (103 members)
- Daybreak, Part III (5 members)
- Deadlock (144 members)
- Deathtrap! (22 members)
- Deceased Characters (18 members)
- Deceased Characters (Caprica) (28 members)
- Deceased Characters (RDM) (76 members)
- Deceased Characters (TOS) (15 members)
- Deceased Characters (TOS-DE) (1 member)
- Deceased Characters (TRS) (8 members)
- Deleted discussion pages (0 members)
- Descriptive terms (95 members)
- Directors (50 members)
- Directors (1980) (6 members)
- Directors (Caprica) (8 members)
- Directors (RDM) (24 members)
- Directors (TOS) (6 members)
- Directors (TRS) (3 members)
- Dirteaters (2 members)
- Dirty Hands (40 members)
- Disambiguation (428 members)
- Downloaded (48 members)
- Drugs (37 members)
- Drugs (RDM) (28 members)
- Drugs (TOS) (7 members)
- Dunce Hat recipient (2 members)
- Dynamite Comics (284 members)
- Dynamite Comics (1980) (4 members)