The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- F7 Hornet series (10 members)
- F8A Lightning Images (19 members)
- F8A Lightning images (1 member)
- F8C Lightning Images (8 members)
- F8 Lightning series (2 members)
- FBL-8a images (3 members)
- FBL-8a set (5 members)
- FFSY (1 member)
- FL-33 images (1 member)
- FS-9 LMG images (7 members)
- FS-9 images (1 member)
- FSK-8 images (7 members)
- FTL Courier images (1 member)
- Faction images (10 members)
- Factions (25 members)
- Family Tree (1 member)
- Far From Home (0 members)
- Farnes Media Partners (3 members)
- Fauna (17 members)
- Fauna images (2 members)
- Female Characters (82 members)
- Ferron System (9 members)
- Fictional Planet (4 members)
- FieldLite images (2 members)
- Field Recon Suit Helmet images (1 member)
- Field Recon Suit images (1 member)
- Field Recon Suit set (4 members)
- Fieldsbury Dark Bear Helmet images (4 members)
- Fighters (1 member)
- File management templates (19 members)
- File namespace templates (2 members)
- Finly the Stormwal images (1 member)
- Fiore (15 members)
- FireStorm Kinetics (10 members)
- First Tevarin War (1 member)
- Fishtank (1 member)
- Flair (1 member)
- Flare stars (1 member)
- Flashfire Systems (3 members)
- Fleet carrier (0 members)
- Fleet carriers (3 members)
- Flickr images (77 members)
- Flight Ready (4 members)
- Flight ready (148 members)
- Flood Energy images (1 member)
- Flora (7 members)
- Flora images (1 member)
- Food (54 members)
- Food images (2 members)
- Footwear (30 members)