Surname Slaje (Slaje 
) , in the world, is a very rare family name. The surname Slaje is habitual in Western Europe, particularly Austria, where it is a rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Slaje | Austria, Germany |
| walter slaje Austrian indologist and librarian, AT (b. 1954) |
|