Surname Kaszt (Casta 
, Castus 
, Kaste 
) , in the entire world, is a common cognomen. The cognomen Kaszt is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare surname, Puerto Rico, and Honduras. Not in comparison with a country's population, the name is most common in Philippines, India, and Colombia. Likewise, Kaszt is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Casta | France, Venezuela, India, Colombia, Philippines |
| Castus | Belgium, France, Brazil, Tanzania, United States |
| Kaste | Mexico, United States, India, Colombia, Germany |
| Kaszt | Israel, Hungary |