Cognomen Backsaether (Backsaether 
) , globally, is a very rare surname. The family name Backsaether is habitual in Norway, where it is a rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Backsaether is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Backsaether | Brazil, Norway |