Cognomen Boguslavski (Boguslavski 
) , around the world, is a very rare family name. The surname Boguslavski is habitual in Estonia, where it is quite a rare surname, Latvia, where it is a rare surname, and Bulgaria. Measured by absolute frequency, the name is most common in Germany, Estonia, and Bulgaria.
| VARIANT | COUNTRY |
|---|---|
| Boguslavski | Estonia, Latvia, Canada, Germany, Bulgaria |