Family name Tennosaar (Tennosaar 
) , around the globe, is a very rare last name. The surname Tennosaar is characteristic of Northern Europe, particularly Estonia, where it is quite a rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tennosaar | United Kingdom, Estonia |
| sirje tennosaar Estonian actress and television host, EE (b. 1943) |
|