Pearrygin Lake State Park, State park in Okanogan County, Washington, United States

Pearrygin Lake State Park is a 1,186-acre public recreation area in the Methow Valley, two miles east of Winthrop in Okanogan County, Washington. The park almost entirely surrounds Pearrygin Lake, giving it 11,000 feet of shoreline. It offers camping, boating, fishing, swimming, water sports, and cross-country skiing, plus the 3.1-mile Rex Derr trail.

The Washington State Parks and Recreation Commission designated this area in 1959 as a public recreation destination. Since its establishment, the park has served the surrounding communities and visitors seeking outdoor activities.

The park's longest trail, the Rex Derr trail, runs 3.1 miles (5.0 km) and is named for a former director of the Washington State Parks and Recreation Commission. The park lies two miles east of Winthrop, a town of western-style wooden storefronts, and the surrounding Methow Valley is worked as timberland.

The park is accessible through multiple entry points where visitors can find basic information and guidance for their visit. Most facilities and trails are available from sunrise to sunset, with seasonal variations in accessibility depending on weather conditions.

Pearrygin Lake State Park covers 1,186 acres and almost entirely surrounds Pearrygin Lake, giving it 11,000 feet of shoreline. The lake sits at about 639 metres above sea level, with surrounding slopes rising to roughly 1,180 metres within a few kilometres.