Last name Postruzin (Postruzin 
) , worldwide, is a very rare cognomen. The cognomen Postruzin is habitual in North Macedonia, where it is quite a rare surname, Croatia, where it is a rare surname, and Austria. Measured by absolute frequency, it is the most numerous in North Macedonia, Croatia, and Germany. Much less frequently, Postruzin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Postruzin | Austria, Germany, North Macedonia, Croatia |