Lake Keomah State Park is a state park of Iowa, USA. It is in Mahaska County. To the park's immediate east is Keomah Village and the park is approximately 4 miles (6.4 km) east of Oskaloosa.
Lake Keomah State Park is a 366-acre (148 ha) state park that surrounds and includes Lake Keomah. Lake Keomah is an 83-acre (34 ha) reservoir.