- Fahrenheit, Daniel Gabriel (1686-1736)
- Faraday, Michael (1791-1867)
- Faults and Fractures
- Feldspar
- Felsic
- Ferrel'slaw
- Ferromagnetic
- Fersman, Aleksandr Evgenievich (1883-1945)
- Feynman, Richard (1918-1988)
- Field methods in geology
- Fissure
- Fjords
- Floods
- Focused Ion Beam (FIB)
- Fog
- Folds
- Forests and Deforestation
- Fossil Record
- Fossilization of Bacteria
- Fossils and Fossilization
- Franklin, Benjamin (1706-1790)
- Frasch, Herman (1851-1914)
- Freezing and Melting
- Freshwater
- Fuels and Fuel Chemistry
- Fujita, Tetsuya Theodore (1920-1998)
- Fumarole