Cognomen Kotarba (Kotarba 
, Котарба 
) , all around the world, is quite a rare last name. The family name Kotarba is habitual in Poland, where it is quite a rare surname, Ireland, where it is a rare surname, and Belarus. Measured by absolute frequency, it is commonest in Poland, the United States, and France. Also, Kotarba is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kotarba | Canada, Poland, France, United States, Germany |
| Котарба | Ukraine |
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beniamin kotarba Polish officer (1893-1939), PL (b. 1893) |
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feliks kotarba PL (b. 1895) |
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maria kotarba (1907-1956), PL (b. 1907) |
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| stefan kotarba PL (b. 1901) |
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marek kotarba PL (b. 1952) |
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| leon kotarba PL (b. 1924) |
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| włodzimierz kotarba PL (b. 1925) |
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| adam kotarba Polish geographer, PL (b. 1938) |
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| joseph a. kotarba (b. 1947) |
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| grzegorz kotarba researcher ORCID ID = 0000-0002-3288-0351 |
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| jérôme kotarba archaeologist |
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| a. kotarba researcher ORCID ID = 0000-0002-2779-2963 |
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| joseph a. kotarba American sociologist |
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| andrzej kotarba Polish chemist, PL |
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