Last name Kastelec (Kastelec 
) , in the world, is a rare surname. The cognomen Kastelec is habitual in Slovenia, where it is quite a common surname, Croatia, where it is a rare surname, and Sweden. Very seldom, Kastelec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kastelec | Sweden, Slovenia, Croatia, United States, France |
| matija kastelec Slovene priest and writer, SI (b. 1620) |
|
|
| albert kastelec SI (b. 1930) |
|
|
| matej kastelec SI (b. 1965) |
|
|
| monika kastelec Slovene association football player, SI |
|
|
| damijana kastelec SI |
|
Mr, Jakob, Tomaz, Urška, Matjaz, Sylvie, Slavko, Robert, Jernej, Nastja, Janez, Helena, Maruša, Matthew, Matjaž, Andreja, Barbara, Justine, Hermina, Marijana, Kristina, Špela, Eleonora, Grega, Dejan, Ms, Ana, Rok, Lea, Jan, Edw, Maja, Miha, Gaja, Davor, Luka, John, Nika, Erik, Žan, Matej, Mojca, Boris, Paula, Paolo, Jaka, and Vladimir