| Blackälven | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Sweden |
| Subdivision Type3: | County |
| Subdivision Name3: | Norrbotten |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Jokkmokk |
| Discharge1 Avg: | 59m3/s |
| Source1: | Tjaktjajávrre |
| Source1 Coordinates: | 66.9778°N 18.5833°W |
| Mouth: | Jiekkávrre |
| Mouth Coordinates: | 66.925°N 18.5667°W |
| Basin Size: | 2460km2[1] |
Blackälven is a river in Sweden.