Last name Granstrøm (Granstrøm 
) , in the entire world, is a very rare family name. The family name Granstrøm is characteristic of Northern Europe, particularly Norway, where it is a rare surname, and Denmark, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Granstrøm | Norway, Denmark |
| annica granstrøm Danish mayor |
|