Last name Grewin (Grewin 
) , worldwide, is a very rare surname. The family name Grewin is characteristic of Sweden, where it is a rare surname, Germany, where it is a very rare surname, and Venezuela. Also, Grewin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Grewin | Germany, Philippines, Venezuela, Sweden, India |
| fredrik grewin (b. 1880) |
|
|
| christer grewin (b. 1941) |
|