Books in Science Fiction (sorted alphabetically)
- First Lensman E. E. Smith
- First Men in the Moon H. G. Wells
- First Men in the Moon H. G. Wells
- First One Herbert D. Kastle
- First on the Moon Jeff Sutton
- Five Thousand Miles Underground; Or, the Mystery of the Centre of the Earth Roy Rockwood
- Flamedown H. B. Fyfe
- Flatland: A Romance of Many Dimensions Edwin Abbott Abbott
- Flatland: A Romance of Many Dimensions Edwin Abbott Abbott
- Flight From Tomorrow H. Beam Piper
- Flight Through Tomorrow Stanton A. Coblentz
- Floating Island of Madness Jason Kirby
- Fly By Night Arthur Dekker Savage
- Flying Cuspidors V. R. Francis
- Food of the Gods and How It Came to Earth H. G. Wells
- Foreign Hand Tie Randall Garrett
- Forever Robert Sheckley
- Forgotten Planet Murray Leinster
- Forsyte's Retreat Winston K. Marks
- Founding Father Jesse F. Bone
- Foundling on Venus John De Courcy and Dorothy De Courcy
- Four-Day Planet H. Beam Piper
- Four-Faced Visitors of Ezekiel Arthur W. Orton
- Fourth Invasion Robert W. Lowndes
- Fourth "R" George O. Smith