Family name Kosa (Kosa 
, Kósa 
, Коса 
) , in the world, is a common last name. The cognomen Kosa is habitual in Eastern Europe, particularly Hungary, where it is quite a common surname, Slovakia, and Romania, where it is quite a rare surname. In absolute terms, it is the most numerous in Hungary, India, and Pakistan. Likewise, Kosa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosa | Hungary, Slovakia, Pakistan, India, Romania |
| Kósa | Hungary, Slovakia, United States, Germany, Romania |
| Коса | Kyrgyzstan, Belarus, Russia, Ukraine, Bulgaria |
| โกษะ | Thailand |
| kosa lek siamese official and trader (b. 1632) |
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| emil kosa CZ (b. 1851) |
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| emil kosa, sr. American artist (b. 1876) |
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| lajos kosa association football player (1898-1966) (b. 1898) |
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| emil kosa visual effects artist (1903-1968), US (b. 1903) |
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| frank kosa American documentary producer & writer, US (b. 1968) |
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| daisy kosa researcher |
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| martha jane kosa Ph.D. The University of North Carolina at Chapel Hill 1994 |
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| muchaki kosa Indian politician, IN |
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| elfiallyiettez kosa Australian model, AU (b. 1988) |
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| kosa petrović RS |
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| viliam kosa SK (b. 1986) |
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