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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 |
|---|---|
| Bogusław | Poland, Sweden, United States, United Kingdom, Germany |
| Boguslaw | Canada, Poland, United States, United Kingdom, Germany |
| Богуслав | Kazakhstan, Russia, Lithuania, Belarus, Ukraine |