| Tännassilma | |
| Settlement Type: | Village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Estonia |
| Coordinates: | 58.3344°N 26.2983°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Tartu County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Elva Parish |
| Population Total: | 45 |
| Population As Of: | 01.01.2010 |
Tännassilma is a village in Elva Parish, Tartu County, Estonia. It has a population of 45 (as of 1 January 2010).[1]