Family name Ostyn (Ostyn 
, Остин 
) , in the world, is quite a rare cognomen. The family name Ostyn is characteristic of Belgium, where it is quite a rare surname, France, where it is a rare surname, and Russia, where it is a very rare surname. Much less frequently, Ostyn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ostyn | Belgium, Brazil, France, Germany, United States |
| Остин | Ukraine, Russia |
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françois-charles ostyn FR (b. 1823) |
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| berthe ostyn German actress, DE (b. 1906) |
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jean-luc ostyn Belgian speed skater and inline skater, BE (b. 1960) |
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| michel ostyn Belgian sports medicine pioneer, BE (b. 1924) |
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bert ostyn Belgian singer, BE (b. 1981) |
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| daniël ostyn BE (b. 1929) |
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| niels ostyn researcher ORCID ID = 0000-0002-5630-3233 |
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| sam ostyn director and filmmaker |
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| roger ostyn BE |
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| veronique ostyn |
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| maurits ostyn BE |
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| katia ostyn |
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| jozef ostyn BE |
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Mr, Bart, Bert, Kasi, Kaat, Koen, Kurt, Paul, Rene, Dave, Dale, Dawn, Dirk, Gabe, Giel, Levy, Line, Lisa, Léa, Jana, John, Jess, Carl, Aram, Anne, Anna, Ms, An, Sam, Amy, Kat, Pol, Pia, Roy, Guy, Luc, Jens, Jan, Tom, Tim, Els, Eva, Evi, Ivo, Mary, Mark, Shay, Staf, Jim, and Jean