| Rocky Glen State Park | |
| Photo Width: | 280 |
| Map: | Connecticut#USA |
| Map Width: | 280 |
| Relief: | 1 |
| Label: | Rocky Glen State Park |
| Location: | Newtown, Connecticut, United States |
| Coordinates: | 41.4283°N -73.2819°W |
| Area: | 46acres |
| Elevation: | 322feet |
| Established: | 1943 |
| Designation: | Connecticut state park |
| Administrator: | Connecticut Department of Energy and Environmental Protection |
Rocky Glen State Park is an undeveloped public recreation area covering along the west side of the Pootatuck River in the town of Newtown, Connecticut. The state park offers opportunities for hiking to a scenic cascade and includes a one-and-a-half mile stretch of Al's Trail, a 10.7mile greenway trail that winds through Newtown. It appeared as the state's forty-seventh state park in the 1943 edition of the Connecticut Register and Manual. The park is managed by the Connecticut Department of Energy and Environmental Protection.