| Indalsälven | |
| Name Other: | Jämtlandsälven, Litsälven, Storsjöälven |
| Map: | Karta Indalsalven position.gif |
| Subdivision Type1: | Country |
| Subdivision Name1: | Sweden |
| Subdivision Type3: | County |
| Subdivision Name3: | Jämtland, Västernorrland |
| Length: | 420km (260miles)[1] |
| Discharge1 Avg: | 460m3/s |
| Source1: | Åreälven |
| Source2: | Järpströmmen |
| Mouth: | Klingerfjärden, near Sundsvall. |
| Mouth Location: | Bothnian Sea, Västernorrland County |
| Mouth Elevation: | 0m (00feet) |
| Basin Size: | 26726.5km2[2] |
Indalsälven is one of Sweden's longest rivers with a total length of 430 kilometers. Among its tributaries are Kallströmmen, Långan, Hårkan and Ammerån. A total of 26 hydropower plants are placed along its course, making it the third most power producing river of Sweden.
The Indalsälven drains the Storsjön and culminates in the Bothnian Sea.