Surname Kalapacs (Kalapacs 
) , all over the world, is a rare last name. The cognomen Kalapacs is habitual in Hungary, where it is quite a rare surname, Romania, where it is a rare surname, and Germany, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Hungary, Romania, and the United States. Very seldom, Kalapacs is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalapacs | Germany, Romania, Hungary, United States, France |