Shey Phoksundo National Park is the largest and only trans-Himalayan National Park in Nepal. It covers an area of 3,555 km2 (1,373 sq mi) in the districts of Dolpa and Mugu in the northwestern part of the country.

The park was formally gazetted in 1984 with its headquarters in Palam, in Dolpa District.

The park contains the famous Phoksundo Lake, the deepest lake in Nepal.