Last name Kruup (Kruup 
) , in the world, is a rare surname. The surname Kruup is habitual in Estonia, where it is quite a rare surname, Netherlands, where it is a rare surname, and Australia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kruup | United Kingdom, Estonia, Australia, United States, Netherlands |
| kalev kruup (b. 1920) |
|