| Mahtra Nature Reserve | |
| Map: | Estonia |
| Relief: | yes |
| Location: | Estonia |
| Nearest City: | Juuru |
| Area: | 7610 ha |
| Established: | 1959 |
Mahtra Nature Reserve is a nature reserve which is located in Harju County, Estonia.[1]
The area of the nature reserve is 7610 ha.[2]
The protected area was founded in 1959 to protect Järlepa Manor Park with the lake. In 1964 also Amassaare Hill was taken under protection.