| Lake Dennison Recreation Area | |
| Map: | USA Massachusetts#USA |
| Relief: | 1 |
| Location: | Winchendon, Worcester, Massachusetts, United States |
| Coordinates: | 42.6266°N -72.0777°W |
| Area Acre: | 121 |
| Elevation: | 820feet |
| Established: | Unspecified |
| Operator: | Massachusetts Department of Conservation and Recreation |
| Website: | Lake Dennison Recreation Area |
Lake Dennison Recreation Area is a 121acres Massachusetts state park located in the town of Winchendon. It comprises a small portion of the of the U.S. Army Corps of Engineers' Birch Hill Flood Control Project that are managed by the Department of Conservation and Recreation and that also include Otter River State Forest.