- Falkland Islands (Islas Malvinas)2 objects
- Fall River Valley, Shasta County, California4 objects
- Farallon Islands, San Francisco County, California1 objects
- Feather River/Lower Horvat Creek watershed18 objects
- Federated States of Micronesia29 objects
- Felton, Santa Cruz County, California1 objects
- Fiji9 objects
- Fly River, Danmoree Island, Papua New Guinea60 objects
- Folha, Rio Andirá, Brazil4 objects
- Fort Defiance, Apache County, Arizona6 objects
- Forty Mile, Yukon, Canada1 objects
- Four Corners, Mendocino County, California1 objects
- Foué Peninsula, New Caledonia271 objects
- Fox Islands, Aleutians East Borough, Alaska9 objects
- Frank Gurtson ranch, Klamath County, Central Oregon3 objects
- French Polynesia31 objects
- Fresno County, California11 objects
- Fresno Flats, Madera County, California2 objects