Last name Klanc (Klanc 
, Кланц 
) , in the world, is a very rare cognomen. The last name Klanc is habitual in Eastern Europe, particularly Czechia, where it is a rare surname, Ukraine, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Klanc | Czechia |
| Кланц | Russia, Ukraine |