Last name Kosubek (Kosubek 
, Косубек 
) , throughout the world, is a rare family name. The cognomen Kosubek is habitual in Germany, where it is a rare surname, Estonia, and Poland. Measured by absolute frequency, it most frequently occurs in Germany, Poland, and Canada. Very seldom, Kosubek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosubek | Germany, Estonia, Poland, Canada, Brazil |
| Косубек | Kyrgyzstan |
| gisela kosubek German translator, DE (b. 1941) |
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| siegfried kosubek DE (b. 1943) |
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| hans-joachim kosubek DE (b. 1951) |
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| uwe kosubek German actor and dub actor, DE (b. 1961) |
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| katja kosubek German historian and museum director, DE (b. 1970) |
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| bea kosubek German property master, DE (b. 1973) |
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| jasmin kosubek German sports scientist and mountain biker, DE (b. 1978) |
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| jasmin kosubek German news presenter, continuity announcer and interviewer, DE (b. 1987) |
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