| Pushpin Map: | Sweden#Norway |
| Pushpin Label Position: | left |
| Pushpin Label: | Sijdasjávrre |
| Pushpin Map Alt: | Location of the lake |
| Coordinates: | 68.0968°N 17.2287°W |
| Basin Countries: | Sweden and Norway |
| Area: | 71.91km2 (0.96 km2 in Norway) |
| Reference: | NVE |
or or is a lake on the border between Norway and Sweden. The lake covers an area of, with of the lake in Norway (Narvik Municipality in Nordland county) and in Sweden (Gällivare Municipality in Norrbotten County). The name of the lake comes from the Sami languages, with the ending -jávri or -jávrre being the word for "lake".[1]