Family name Hasaas (Hasaas 
) , throughout the world, is a rare last name. The surname Hasaas is habitual in Northern Europe, particularly Norway, where it is quite a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Hasaas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hasaas | Norway, United Kingdom |
|
olaf hasaas NO (b. 1894) |
|
| øyvind hasaas (b. 1956) |
|