| Official Name: | Fiy |
| Native Name: | Фий |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Dagestan#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Republic of Dagestan |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Akhtynsky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
| Coordinates: | 41.2833°N 80°W[1] |
Fiy (Russian: links=no|Фий) is a rural locality (a selo) in Akhtynsky District, Republic of Dagestan, Russia. The population was 1,710 as of 2010.[2]
Fiy is located 31 km southwest of Akhty (the district's administrative centre) by road, on the Fiya River. Gdym is the nearest rural locality.[3]