Last name Karolys (Karolys 
) , throughout the world, is a very rare family name. The last name Karolys is habitual in Latin America and the Caribbean, particularly Ecuador, where it is a rare surname, Venezuela, where it is a very rare surname, and Colombia. Not in comparison with a country's population, it is the most numerous in Ecuador, the United States, and Venezuela. Very seldom, Karolys is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karolys | Brazil, Venezuela, Ecuador, United States, Colombia |