Cognomen Bratek (Bratek 
) , all around the world, is quite a rare family name. The surname Bratek is characteristic of Poland, where it is quite a rare surname, Croatia, and Germany, where it is a rare surname. In absolute terms, this name is the most popular in Poland, the United States, and Germany. Likewise, Bratek is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bratek | Germany, Croatia, United States, Poland, Brazil |
| stanislaus bratek Polish shoemaker; executed for high treason (Nazi Germany), PL (b. 1920) |
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| małgorzata bratek PL (b. 1954) |
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| ewelina bratek researcher (ORCID 0000-0003-1840-0267) |
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| agnieszka bratek researcher |
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| łukasz bratek Polish physicist and astrophysicist, PL |
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| zoltán bratek botanist |
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