Surname Slavius (Slavius 
) , in the world, is an extremely rare cognomen. The cognomen Slavius is characteristic of Israel, where it is a very rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. More frequently, Slavius is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Slavius | United Kingdom, United States, Israel, Tanzania |