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Cognomen Kool (Kool
, Кул
, קול
) , around the world, is a common family name. The cognomen Kool is characteristic of Estonia, where it is quite a common surname, Netherlands, and Mauritius, where it is quite a rare surname. In absolute terms, it most frequently occurs in Netherlands, India, and Egypt. Very seldom, Kool is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kool | Netherlands, Egypt, Sudan, India, Indonesia |
| Кул | Kazakhstan, Russia, Kyrgyzstan, Armenia, Ukraine |
| קול | Israel |
| Кооль | Kazakhstan, Kyrgyzstan, Russia, Ukraine |