| Otermanjärvi | |
| Pushpin Map: | Finland |
| Location: | Vaala |
| Coords: | 64.65°N 32°W |
| Type: | Lake |
| Catchment: | Oulujoki |
| Basin Countries: | Finland |
| Area: | 21.124km2 |
| Depth: | 2m (07feet) |
| Max-Depth: | 5.47m (17.95feet) |
| Volume: | 0.0422km3 |
| Shore: | 52.46km (32.6miles) |
| Elevation: | 140.6m (461.3feet) |
| Frozen: | December–April |
| Islands: | Holapansaari |
Otermanjärvi is a medium-sized lake in Vaala municipality, in Finland. It belongs to the Oulujoki main catchment area.[1]