Denali State Park, Nature reserve in Matanuska-Susitna, United States.

Denali State Park covers 325,240 acres (131,620 ha) in the Matanuska-Susitna Borough, bordering Denali National Park and Preserve on the east along the Parks Highway. Its terrain runs from lowlands with meandering rivers up through alpine tundra to the Curry and Kesugi ridgelines in the east. Apart from two day-use areas, four campgrounds and two trailheads, it is undeveloped wilderness.

Denali State Park was established in 1970 and enlarged to its present 1,316 km² in 1976. It lies east of the Alaska Range and borders Denali National Park and Preserve, while the George Parks Highway between Anchorage and Fairbanks runs north-south through it.

The park lies between the Talkeetna Mountains and the Alaska Range, and the George Parks Highway runs north-south through it, giving road access to trailheads and viewpoints. The Kesugi Ridge and Little Coal Creek trails start from the highway, and the Alaska Veterans Memorial stands at Denali Viewpoint South.

The George Parks Highway (Alaska Route 3) runs north-south directly through the park, giving road access to two day-use areas, four campgrounds and two trailheads. The Upper Troublesome Creek Trail has been closed since 2009 because of washouts from severe flooding. Summer brings almost 21 hours of daylight, and mosquitoes are present in certain seasons, so visitors should come prepared.

The park's two state recreation sites, Blair Lake and Tokositna River, were founded in 1994 and are minimally developed. More than 130 bird species nest in the park or pass through during migration, including loons, ospreys and trumpeter swans drawn to its lakes and streams.