Surname Kruc (Kruc 
, Круц 
) , in the entire world, is quite a rare family name. The cognomen Kruc is characteristic of Croatia, where it is quite a rare surname, Ukraine, where it is a rare surname, and Belarus. Measured by absolute frequency, this name is the most popular in Russia, Ukraine, and Croatia. Very seldom, Kruc is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kruc | Germany, Croatia, Canada, United States, Poland |
| Круц | Kazakhstan, Ukraine, Kyrgyzstan, Belarus, Russia |