The Nā Pali Coast State Park is a 6,175 acres (2,499 ha) Hawaiian state park located in the center of the rugged 16 miles (26 km) along the northwest side of Kauaʻi, the oldest inhabited Hawaiian island. The Nā Pali coast itself extends southwest starting at Keʻe Beach extending all the way to Polihale State Park. The na pali (high cliffs) along the shoreline rise as much as 4,000 feet (1,200 m) above the Pacific Ocean. The state park was formed to protect the Kalalau Valley.

To the east of the state park is the Hono O Nā Pali State Natural Reserve. It was established in 1983, and then extended to over 3,578 acres (14.5 km²) in 2009. Hiking trails and hunters roads have access to the sharp ridges from Koke'e Road (route 550) in Waimea Canyon.