Surname Stepnowski (Stepnowski 
) , in the entire world, is a rare cognomen. The last name Stepnowski is habitual in Poland, where it is quite a rare surname, Israel, where it is a rare surname, and the United States, where it is a very rare surname. Also, Stepnowski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Stepnowski | Canada, United Kingdom, United States, Poland, Israel |
|
janusz stepnowski Polish priest, PL (b. 1958) |
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| andrzej stepnowski Polish computer scientist, PL (b. 1940) |
|
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| piotr stepnowski researcher, PL (b. 1970) |
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| dariusz stepnowski PL |
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