Cognomen Sunabacka (Sunabacka 
) , all around the world, is a very rare surname. The last name Sunabacka is characteristic of Finland, where it is a rare surname, Estonia, and Romania.
| VARIANT | COUNTRY |
|---|---|
| Sunabacka | Finland, Romania, Estonia |
| karen sunabacka CA (b. 1975) |
|
|
| joel sunabacka Finnish association football player, FI (b. 1988) |
|
|
| ulf-johan sunabacka FI |
|