Cognomen Kudlač (Kudlač 
, Кудлач 
) , worldwide, is a rare last name. The last name Kudlač is habitual in Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Croatia. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Belarus, Ukraine, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kudlač | Croatia |
| Кудлач | Belarus, Kazakhstan, Russia, Ukraine |