Junkerdal National Park (Norwegian: Junkerdal nasjonalpark) is a national park in Saltdal Municipality and Fauske Municipality in Nordland county, Norway, along its border with Sweden.

Several of the plant species are generally rare, such as the white Arctic mountain heather (Cassiope tetragona).

The white mountain saxifrage (Saxifraga paniculata) is found in only three places in Norway, and it is most widely distributed in Junkerdal National Park.

Other rare plants found in the national park are Arctic bellflower (Campanula uniflora), upright lousewort (Pedicularis flammea) and hairy lousewort (Pedicularis hirsuta).

A wide variety of rare and threatened wetland birds also nest inside the national park, among them include the gerfalcon, golden eagle, red-throated loon, Arctic loon, and long-tailed duck.