Møysalen National Park (Norwegian: Møysalen nasjonalpark) is a protected area located on the island of Hinnøya in Nordland county, Norway. The park was created in 2003 to protect a coastal alpine landscape that remains untouched. The area is known for its tall mountains rising from the ocean and deep fjords. The highest point in the park is Møysalen mountain, which reaches 1,262 meters (4,140 feet) in height. Most of the park is within Lødingen Municipality, though a small part in the northern region extends into Sortland Municipality.

The park remains mostly in its natural condition. It is one of the few national parks in Norway that includes areas at sea level, such as the Vestpollen branch of the Øksfjorden. This includes both mountainous regions and areas with untouched birch forests. The park also has many small wetlands, though most are not large.

The steep mountains and nearby coastal areas with abundant seabirds, along with populations of small animals like rodents, provide good hunting grounds for several birds of prey. These include the white-tailed eagle, golden eagle, gyrfalcon, and peregrine falcon. Other rare or endangered birds of prey that breed in the park are kestrels, merlins, and rough-legged buzzards. The wildlife in the area is typical of Nordland county. The Eurasian otter, a species that is at risk in Norway, is commonly found here. The area around the Øksfjorden is an important habitat for moose on Hinnøya island. Other common animals include hares, red foxes, stoats, and American mink.