| Mustassaare | |
| Settlement Type: | village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location in Estonia |
| Coordinates: | 57.8375°N 26.8031°W |
| Subdivision Type: | Country |
| Subdivision Name: | Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Võru County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Võru Parish |
| Population Total: | 31 |
| Population As Of: | 01.01.2008 |
Mustassaare is a village in Võru Parish, Võru County, in southeastern Estonia. It is located just southwest of Sõmerpalu, the administrative centre of the municipality. Mustassaare has a population of 31 (as of 1 January 2008).[1]
Mustassaare has a station on currently inactive Valga–Pechory railway.
The southeastern part of Mustassaare village territory is occupied by Nursipalu training area used by the Estonian Defence Forces.