| Massacoe State Forest | |
| Map: | USA Connecticut#USA |
| Map Size: | 280 |
| Relief: | 1 |
| Location: | Simsbury, Hartford, Connecticut, United States |
| Coordinates: | 41.8556°N -72.8633°W |
| Area Acre: | 503 |
| Elevation: | 348feet |
| Established: | 1908 |
| Governing Body: | Connecticut Department of Energy and Environmental Protection |
| Website: | Massacoe State Forest |
Massacoe State Forest is a Connecticut state forest located in the town of Simsbury. The forest comprises two noncontiguous sections: the Great Pond Block, which encompasses 36acres Great Pond, and the Massacoe Block, which lies next to Stratton Brook State Park. Forest recreational activities include hiking, fishing, and bird watching.