Kōkeʻe State Park is located in northwestern Kauaʻi in the Hawaiian Islands.

It includes the Kōkeʻe Museum at the 15 mi (24 km) marker on State Road 550, which focuses on the weather, vegetation, and bird life; a lodge which serves food and sells gifts; cabins for rent; and hiking trails.

Situated on a plateau between 3,200 and 4,200 ft (980 and 1,280 m), much of Kōkeʻe is a montane (infrequent frost) mesic forest (50 to 100 in or 1,300 to 2,500 mm annual rainfall with moist soil conditions) dominated by koa (Acacia koa) and ʻōhiʻa lehua (Metrosideros polymorpha) trees.

At the end of the state road is a lookout onto the Kalalau Valley, once home to thousands of native Hawaiians.

The valley was the backdrop for Jack London's short story Koʻolau the Leper.