Cognomen Kulcar (Kulcar 
) , throughout the world, is a rare last name. The last name Kulcar is characteristic of Slovakia, where it is quite a rare surname, Slovenia, and Argentina, where it is a very rare surname. In absolute terms, it is the most numerous in Slovakia, Slovenia, and Germany. More frequently, Kulcar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kulcar | Germany, Slovakia, Slovenia, India, Argentina |