Cognomen Капер (Kaper 
, Kapper 
, Капер 
) , worldwide, is quite a rare surname. The family name Капер is characteristic of Netherlands, where it is quite a rare surname, Estonia, and Austria. Not in comparison with a country's population, the name is most common in Netherlands, the United States, and India. Very seldom, Капер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaper | Netherlands, Germany, Indonesia, United States, India |
| Kapper | Netherlands, Germany, United States, Austria, India |
| Капер | Russia, Ukraine |