- Faraday, Michael, 1
- Fermi, Enrico, 1, 2
- fermions, 1
- Feynman, Richard, 1, 2, 3
- fine-structure constant, 1
- fission see nuclear fission
- fly-by anomaly, 1
- Fowler, Willy, 1
- Franck, James, 1
- Frisch, Otto, 1
- Fuller, Buckminster, 1
- fundamental frequency, 1
- fusion see nuclear fusion