| Apavatn | |
| Location: | southwest Iceland |
| Coords: | 64.1667°N -60°W |
| Basin Countries: | Iceland |
| Area: | 13km2 |
| Pushpin Map: | Iceland |
| Pushpin Map Alt: | Location of Apavatn in Iceland. |
Apavatn (pronounced as /is/) is a lake in southwest Iceland. With a surface area of around 13 km2 it is much larger than the neighbouring lake of Laugarvatn, which lies to the north of Apavatn.
Apavatn is renowned for its good fishing, especially trout.