| Østre Grimevann Austre Grimevannet | |
| Pushpin Map: | Agder#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Label: | Grimevann |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 58.3036°N 8.3713°W |
| Location: | Lillesand, Agder |
| Inflow: | Vestre Grimevann |
| Outflow: | Osen river |
| Basin Countries: | Norway |
| Area: | 3.94km2 |
| Reference: | NVE |
Østre Grimevann or Austre Grimevannet is a lake in the municipality of Lillesand in Agder county, Norway. The 3.94km2 lake is located north of the European route E18 highway about from the city of Lillesand. It is the drinking water reservoir for the municipality of Lillesand.[1]