Surname Kalapus (Kalapus 
) , worldwide, is a very rare last name. The last name Kalapus is habitual in Poland, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Kalapus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalapus | India, Poland, United States |