| Haavassoo Nature Reserve | |
| Map: | Estonia |
| Relief: | yes |
| Location: | Estonia |
| Area: | 401 ha |
| Established: | 2014 |
Haavassoo Nature Reserve is a nature reserve which is located in Saare County, Estonia.[1]
The area of the nature reserve is 401 ha.[2]
The protected area was founded in 2006 on the basis of Haavassoo Protected Area (Estonian: Haavassoo hoiuala).