Cognomen Slewo (Slewo 
) , in the entire world, is a very rare family name. The cognomen Slewo is characteristic of Australia, where it is a very rare surname, the United States, where it is an extremely rare surname, and Canada. Very seldom, Slewo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Slewo | Australia, United States, Canada |