Cognomen Kosok (Kosok 
) , globally, is a rare family name. The surname Kosok is characteristic of Germany, where it is a rare surname, Poland, and Israel, where it is a very rare surname. Measured by absolute frequency, it is commonest in Germany, Poland, and Indonesia. Much less frequently, Kosok is the forename as well as the last name.
| paul kosok American historian and anthropologist, US (b. 1869) |
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grzegorz kosok Polish volleyball player, PL (b. 1986) |
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| lisa kosok German historian, DE (b. 1955) |
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| martin kosok DE (b. 1985) |
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| felix kosok DE (b. 1988) |
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