Cognomen Kostuch (Kostuch 
) , all over the world, is quite a rare surname. The last name Kostuch is characteristic of Poland, where it is quite a rare surname, Austria, where it is a rare surname, and Czechia. In absolute terms, it is the most numerous in Poland, the United States, and Germany. Also, Kostuch is the forename as well as the last name.
| jakub kostuch Polish folk poet and writer (b. 1789) |
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martha kostuch Canadian environmentalist (1949-2008), CA (b. 1949) |
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| tomasz kostuch PL (b. 1916) |
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| dorothy kostuch art history educator, US (b. 1935) |
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david kostuch Canadian ice hockey player (1987-), CA (b. 1987) |
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| lucyna kostuch Polish historian (b. 1972) |
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| aldona kostuch researcher ORCID ID = 0000-0001-6612-8646 |
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