| Isachsenfonna | |
| Type: | Plateau glacier |
| Location: | Haakon VII Land Spitsbergen, Svalbard |
| Map: | Svalbard |
| Coordinates: | 79.1689°N 12.8829°W |
| Mark: | Blue_pog.svg |
| Area: | 140sqkm |
Isachsenfonna is a plateau glacier in Haakon VII Land at the northwestern part of Spitsbergen, Svalbard. It covers an area of about 140 km2, and reaches a height of about 900m (3,000feet) above sea level. The glacier is named after polar scientist Gunnar Isachsen, who traversed the glacier in 1906.[1]