| Belfair State Park | |
| Map: | USA Washington#USA |
| Relief: | 1 |
| Location: | Mason County, Washington, United States |
| Nearest City: | Bremerton, Washington |
| Coordinates: | 47.4297°N -122.8761°W |
| Area Acre: | 94 |
| Elevation: | 10feet |
| Designation: | Washington state park |
| Established: | 1952 |
| Website: | Belfair State Park |
Belfair State Park is a public recreation area located on Hood Canal 3miles southwest of Belfair in Mason County, Washington. The state park consists of of tidal flats, wetlands, and beaches with a 3720feet shoreline. Park activities include camping, fishing, swimming, clam digging, crabbing, birdwatching, and field sports.