Last name Krupec (Krupec 
, Крупец 
) , globally, is a rare cognomen. The family name Krupec is habitual in Belarus, where it is quite a rare surname, Croatia, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Belarus, Russia, and Croatia.
| VARIANT | COUNTRY |
|---|---|
| Krupec | Croatia |
| Крупец | Belarus, Kazakhstan, Russia |
| istván krupec SK (b. 1858) |
|
|
| viktor krupec SK (b. 1884) |
|