Keyhole State Park is a state recreational park known for its wildlife viewing and other recreational activities. It is part of the Wyoming State Parks system and is administered by the State Parks, Historic Sites, and Trails office.

Taking its name from the nearby Keyhole Reservoir, Keyhole State Park is known locally as one of the best areas for wildlife viewers and bird watchers. Many native and migrating species of birds make the park their preferred habitat or resting ground. Land based wildlife include mule deer, pronghorn antelope and wild turkeys.

Its location near the Keyhole Reservoir makes it good for water activities. There is a privately operated marina in the park that sells fishing supplies, boat rentals, and other water services.