| Fosselvi | |
| Pushpin Map: | Vestland#Norway |
| Pushpin Map Caption: | Location of the river |
| Subdivision Type1: | Country |
| Subdivision Name1: | Norway |
| Subdivision Type2: | County |
| Subdivision Name2: | Vestland |
| Subdivision Type3: | Municipalities |
| Subdivision Name3: | Årdal Municipality |
| Length: | 473.3m (1,552.8feet) |
| Discharge1 Min: | 4m3/s |
| Discharge1 Max: | 14m3/s |
| Source1: | Vettisfossen |
| Source1 Location: | Utladalen, Årdal, Norway |
| Source1 Coordinates: | 61.3792°N 7.9475°W |
| Mouth: | Utla River |
| Mouth Location: | Utladalen, Årdal, Norway |
| Mouth Coordinates: | 61.3822°N 7.9386°W |
Fosselvi is a river in Årdal Municipality in Vestland county, Norway. The 473.3m (1,552.8feet) long river starts at an elevation of from the Vettisfossen waterfall, assuming rapids and rocks exposed above the flow surface, and reaching towards the river at an elevation of in the Utladalen valley below.[1] [2]