Fo
- Fond du Lac River - Wisconsin
- Fore River - Maine
- Forest River - North Dakota
- Forge River - Massachusetts
- Fork River - California
- Forked Deer River - Tennessee
- Fortymile River - Alaska
- Fossil Creek - Arizona
- Fourche River - Arkansas
- Fourche La Fave River - Arkansas
- Fourche Maline - Oklahoma
- Fourteen Mile Creek - Indiana
- Fowl River - Alabama
- Fowler River - New Hampshire
- Fox River - Southern Illinois
- Fox River - Wisconsin, Northern Illinois
- Fox River - Wisconsin
Read more about this topic: List Of Rivers Of The United States: F