| Gyvatn | |
| Pushpin Map: | Agder#Norway |
| Pushpin Label Position: | bottom |
| Location: | Agder county |
| Basin Countries: | Norway |
| Area: | 4.62km2 |
| Reference: | NVE |
| Coordinates: | 58.7278°N 7.6622°W |
Gyvatn is a lake in Agder county, Norway. The lake straddles the borders of the three municipalities of Åseral, Bygland and Evje og Hornnes. The 4.62km2 lake is located about northwest of the village of Byglandsfjord and the lake Byglandsfjorden and it is about east of the village of Åknes in Åseral.[1]