Cognomen Stefanyshyn (Stefanyshyn 
, Стефанишин 
) , throughout the world, is quite a rare last name. The family name Stefanyshyn is habitual in Ukraine, where it is quite a rare surname, Canada, where it is a rare surname, and Belarus. Measured by absolute frequency, this name is the most popular in Ukraine, Russia, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Stefanyshyn | Italy, United States, Poland, Canada, Ukraine |
| Стефанишин | Kazakhstan, Ukraine, Belarus, Russia |
Стефанышин, and Стефанышын
| darren stefanyshyn researcher |
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| kelly stefanyshyn Canadian swimmer, Olympic athlete, Pan American Games gold medallist, CA (b. 1982) |
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