Surname Сло (Сло 
) , globally, is a very rare last name. The cognomen Сло is habitual in Armenia, where it is quite a rare surname, Kazakhstan, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Likewise, Сло is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Сло | Ukraine, Russia, Kazakhstan, Armenia |