F
- Faquarl (Jonathan Stroud, Bartimaeus Trilogy)
- Farfarello (Dante's Inferno)
- Femur (Darren Shan, The Demonata)
- Firebrand (Ghosts 'n Goblins video game series; Gargoyle's Quest, Gargoyle's Quest II, and Demon's Crest video games)
- Randall Flagg (Stephen King, The Stand)
- Foot Mystics (Teenage Mutant Ninja Turtles)
- The Friends on the Other Side (The Princess and the Frog)
- Furfur (Umineko no Naku Koro Ni)
Read more about this topic: List Of Fictional Demons