The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Colonial Military (1980) (2 members)
- Colonial Military (BAC) (11 members)
- Colonial Military (Deadlock) (34 members)
- Colonial Military (RDM) (157 members)
- Colonial Military (TOS) (56 members)
- Colonial Military (TRS) (4 members)
- Colonial Religion (63 members)
- Colonial Religion (RDM) (49 members)
- Colonial Religion (TOS) (12 members)
- Colonial Society (241 members)
- Colonial Society (1980) (3 members)
- Colonial Society (RDM) (151 members)
- Colonial Society (TOS) (81 members)
- Colonial Society (TRS) (8 members)
- Comics (622 members)
- Comics (1880) (0 members)
- Comics (1980) (6 members)
- Comics (RDM) (258 members)
- Comics (TOS) (103 members)
- Comitat (4 members)
- Companies (9 members)
- Conflicts (10 members)
- Conflicts (Deadlock) (1 member)
- Conflicts (RDM) (7 members)
- Costumes (3 members)
- Credits (57 members)
- Credits (1980) (3 members)
- Credits (CAP) (10 members)
- Credits (RDM) (2 members)
- Credits (TOS) (13 members)
- Credits (TRS) (26 members)
- Crew (236 members)
- Crew (1980) (16 members)
- Crew (CAP) (1 member)
- Crew (Caprica) (22 members)
- Crew (Deadlock) (3 members)
- Crew (RDM) (142 members)
- Crew (SDS) (3 members)
- Crew (TOS) (49 members)
- Crew (TRS) (15 members)
- Crossroads, Part I (42 members)
- Crossroads, Part II (55 members)
- Crossroads Part II (1 member)
- Cylon Craft (52 members)
- Cylon Craft (Deadlock) (22 members)
- Cylon Craft (RDM) (26 members)
- Cylon Craft (TOS) (12 members)
- Cylon Galactipedian (2 members)
- Cylon Military (61 members)
- Cylon Military (Deadlock) (22 members)