Cognomen Kosier (Kosier 
) , around the globe, is a rare last name. The family name Kosier is characteristic of Croatia, where it is a rare surname, the United States, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kosier | Croatia, Canada, United States, United Kingdom |
| ljubomir kosier opinion journalist and banker (b. 1897) |
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| kyle kosier American football player, US (b. 1978) |
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| steven kosier computer scientist |
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| frank james kosier Ph.D. Michigan State University 1960 |
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