Last name Klotc (Клоц 
, Klotc 
) , in the world, is a rare surname. The surname Klotc is characteristic of Kazakhstan, where it is a rare surname, Ukraine, where it is a very rare surname, and Greece. Not in comparison with a country's population, it most frequently occurs in Kazakhstan, Ukraine, and Russia. Much less frequently, Klotc is the forename as well as the last name.