Surname Krupinskii (Krupinskii 
, Крупинский 
) , in the world, is a rare cognomen. The surname Krupinskii is habitual in Russia, where it is a very rare surname, Belarus, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Krupinskii | Russia, Belarus |
| Крупинский | Kazakhstan, Russia, Ukraine |