Cognomen Sundøen (Sundøen 
) , around the world, is an extremely rare surname. The cognomen Sundøen is habitual in Northern Europe, particularly Norway, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sundøen | Norway |
| einar sundøen Norwegian politician (b. 1900) |
|
Ludvig, and Inger-Lill