Family name Gruszkowska (Gruszkowska 
) , in the entire world, is a rare last name. The cognomen Gruszkowska is habitual in Poland, where it is a rare surname, Norway, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Poland, Brazil, and Norway. More prevalently, Gruszkowska is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gruszkowska | Norway, United Kingdom, United States, Poland, Brazil |