Surname Kałkus (Kałkus 
) , all over the world, is a very rare family name. The family name Kałkus is characteristic of Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kałkus | Poland |
|
stanisław kałkus PL (b. 1932) |
|
| lucjan kałkus PL (b. 1930) |
|