Family name Bartoszyk (Bartoszyk 
) , globally, is a very rare last name. The surname Bartoszyk is characteristic of Poland, where it is a very rare surname, Argentina, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Poland, the United States, and Argentina. Also, Bartoszyk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bartoszyk | Germany, Argentina, Brazil, Poland, United States |