Cognomen Boguslaw (Bogusław 
, Boguslaw 
, Богуслав 
) , throughout the world, is a widespread last name. The cognomen Boguslaw is habitual in Eastern Europe, particularly Poland, where it is a widespread surname, Belarus, where it is a rare surname, and Hungary. In absolute terms, it is commonest in Poland, the United States, and Germany. Much less frequently, Boguslaw is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bogusław | United Kingdom, Germany, Poland, United States, Sweden |
| Boguslaw | United Kingdom, Germany, Poland, Canada, United States |
| Богуслав | Kazakhstan, Ukraine, Belarus, Lithuania, Russia |
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boguslaw fryderyk radziwill German general (1809-1873), DE (b. 1809) |
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| boguslaw von rautenberg-garczynski (b. 1854) |
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| boguslaw jarklowski German painter, DE (b. 1868) |
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| boguslaw dohrn (b. 1875) |
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| boguslaw konieska French association football player, FR (b. 1938) |
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| boguslaw borysiak chess player (b. 1956) |
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| boguslaw furtok PL (b. 1967) |
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| boguslaw kedra researcher |
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| boguslaw mikaszewski researcher (ORCID 0000-0002-2571-1824) |
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| boguslaw tomasz gorski physicist at CERN |
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| i.a. boguslaw botanist |
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| boguslaw tomaszewski Ph.D. University of Wisconsin-Madison 1984 |
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| boguslaw lapinski researcher (ORCID 0000-0002-9273-9579) |
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| boguslaw szczupak researcher |
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| boguslaw wojcieszyk Ph.D. Case Western Reserve University 1996 |
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