Cognomen Viljasoo (Viljasoo 
) , around the world, is an extremely rare last name. The last name Viljasoo is habitual in Estonia, where it is a rare surname, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Viljasoo | Canada, Estonia |
| linda viljasoo botanist (1910-1991) (b. 1910) |
|