Cognomen Masyn (Masyn 
, Масин 
) , all around the world, is a rare family name. The cognomen Masyn is characteristic of Belgium, where it is a rare surname, Russia, and Kazakhstan. Very seldom, Masyn is the forename as well as the last name.
| lucien masyn Belgian association football player, BE (b. 1953) |
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| serge masyn researcher (ORCID 0000-0002-4296-1809) |
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| katherine elizabeth masyn Ph.D. University of California, Los Angeles 2003 |
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| dimitry masyn BE |
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| julienne masyn |
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