Surname Matthiasdottir (Matthiasdottir 
) , globally, is a rare family name. The family name Matthiasdottir is characteristic of Northern Europe, particularly Iceland, where it is quite a common surname, Norway, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Very seldom, Matthiasdottir is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Matthiasdottir | Iceland, Norway, Spain, United States, United Kingdom |