| Roosilla | |
| Settlement Type: | Village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in Estonia |
| Coordinates: | 58.1458°N 25.9097°W |
| Subdivision Type: | Country |
| Subdivision Name: | Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Viljandi County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Viljandi Parish |
| Population Total: | 36 [1] |
| Population As Of: | 2011 |
Roosilla is a village in Viljandi Parish, Viljandi County, Estonia. Until the 2017 administrative reform of Estonian municipalities the village was located in Tarvastu Parish. Roosilla ia located 31 km (19 miles) southeast of the town of Viljandi, 11 km (6.8) southeast of the small borough of Mustla, near the border of Viljandi County and Valga County. Neighboring villages include, Vooru, Maltsa and Suislepa.[2] [3] The population of Roosilla as of 2011 was 36, a decrease from 48 in the 2000 census.[4]