Last name Васлав (Васлав 
, Vaslav 
) , in the entire world, is a very rare cognomen. The family name Васлав is characteristic of Romania, where it is a rare surname, Mexico, where it is an extremely rare surname, and India. Likewise, Васлав is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Васлав | Kazakhstan, Russia, Ukraine |
| Vaslav | Romania, United States, India, Mexico, Italy |