| Lake Chelan State Park | |
| Map: | USA Washington#USA |
| Map Size: | 280 |
| Relief: | 1 |
| Location: | Chelan, Washington, United States |
| Coordinates: | 47.8706°N -120.1928°W |
| Area Acre: | 139 |
| Elevation: | 1115feet |
| Established: | 1942 |
| Operator: | Washington State Parks and Recreation Commission |
| Website: | Lake Chelan State Park |
Lake Chelan State Park is a public recreation area covering on the southwest shore of Lake Chelan in Chelan County, Washington, on the east side of the Cascade Mountains. The state park was created with the state's initial purchase of land in 1942; it opened in 1943. The park offers camping, picnicking, hiking, boating, and water activities.