| Farah River | |
| Map: | Helmand River Basin Sub.png |
| Map Size: | 200 |
| Subdivision Type1: | Country |
| Subdivision Name1: | Afghanistan |
| Source1 Location: | Band-i-Bayan mountains |
| Mouth Location: | Hamun Lake |
| Basin Size: | Sistan Basin |
| Tributaries Left: | Helmand River |
| Tributaries Right: | Harut River |
| Length: | 560km (350miles) [1] |
The Farah River (ps|د فراه سیند; fa|فراه رود) is a river in western Afghanistan. The river originates in the Band-e Bayan Range in the eastern part of Ghor Province, and flows for to the Helmand swamps on the Afghanistan-Iran border. The city of Farah is located on the river, where in the dry season, it has a width of around and a depth of around .[2] The river fluctuates greatly with the seasons, sometimes flooding in the spring and becoming impassable.[3]
The lower valley of the Farah is fertile and well cultivated.