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Last name Gustaw (Gustav
, Gustaw
, Густав
) , in the entire world, is a common cognomen. The last name Gustaw is characteristic of Poland, where it is quite a common surname, Namibia, where it is quite a rare surname, and Cyprus. Not in comparison with a country's population, it most frequently occurs in Poland, Indonesia, and Ghana. More frequently, Gustaw is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gustav | Czechia, Poland, Sweden, Austria, Germany |
| Gustaw | Czechia, Poland, Sweden, United States, Germany |
| Густав | Kazakhstan, Estonia, Russia, Lithuania, Ukraine |