| Øljusjøen | |
| Pushpin Map: | Vestland#Buskerud#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 60.9444°N 8.11°W |
| Location: | Buskerud/Vestland border |
| Basin Countries: | Norway |
| Area: | 8.45km2 |
| Reference: | NVE |
Øljusjøen is a lake in the municipalities of Hemsedal (in Buskerud county) and Lærdal (in Vestland county), Norway. The 8.45km2 lake is located at an elevation of above sea level. It sits about southeast of the village of Borgund and the European route E16 highway. The lake Eldrevatnet is to the north. The lake Juklevatnet and the mountain Høgeloft are both about to the northeast.
Øljusjøen has a hydroelectric dam at the north end which directs water to a power station nearby. The water eventually goes into the Mørkedøla river.[1]