Seminoe State Park, State park in Carbon County, Wyoming, United States.

Seminoe State Park covers 1,639 acres on the northwest side of the 19,000-acre Seminoe Reservoir, at the base of the Seminoe Mountains in Carbon County, 35 miles north of Sinclair. The park has two camping areas and access to the water for boating, fishing, swimming and picnicking.

Gold prospectors worked the nearby Seminoe Mountains in the late 19th century. The Seminoe Dam was built between 1936 and 1938 as a 90 m concrete arch dam with three Francis turbines generating up to 45 MW. In 1965 the U.S. Bureau of Reclamation and the Wyoming Recreation Commission created the state park by agreement on the reservoir's northwest shore.

The name Seminoe is a corruption of the French surname Cimineau, borne by the trapper Basil Cimineau Lajeunesse, who was active in the area in the 1800s. The park and the dam, reservoir and mountains around it all carry this altered form of his name.

The park is divided into separate camping zones, each with its own facilities and beach access along the water. It helps to choose your camping area ahead of time based on whether you prefer quieter surroundings or easier access to amenities.

Seminoe State Park covers 1,639 acres of land and gives access to 19,000 acres of water on the Seminoe Reservoir. The reservoir was created by the Seminoe Dam, a concrete arch dam 90 m high built between 1936 and 1938. Its three Francis turbines can generate up to 45 megawatts of electricity.