Family name Kosior (Kosior 
, Косіор 
) , around the world, is quite a rare last name. The last name Kosior is habitual in Poland, where it is quite a rare surname, Israel, where it is a rare surname, and Canada. In absolute terms, this name is the most popular in Poland, the United States, and Canada. Likewise, Kosior is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosior | Germany, Poland, Canada, United States, France |
| Косіор | Ukraine |
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stanisław kosior Soviet politician (1889-1939), PL (b. 1889) |
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| vladislav kosior Soviet politician, PL (b. 1891) |
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| vladimir kosior politician (b. 1891) |
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| józef kosior Soviet politician (1893-1937), PL (b. 1893) |
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| kazimir kosior Soviet politician, PL (b. 1896) |
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| stanisław kosior Polish Righteous Among the Nations, PL (b. 1907) |
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| marian kosior PL (b. 1921) |
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| krzysztof kosior Polish philosopher (b. 1956) |
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| urszula kosior-korzecka Polish, physiologist, biotechnologist, researcher, PL (b. 1970) |
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| marta kosior-kazberuk Polish engineer, academic, PL (b. 1971) |
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| dariusz kosior Polish cardiologist |
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| arkadiusz kosior Polish physicist, PL |
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| edward kosior researcher, ORCID id # 0000-0002-6130-1822 |
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| robert k kosior researcher |
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| jayme c. kosior researcher |
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