Cognomen Belen'Kii (Belen'Kii 
, Беленький 
) , in the world, is quite a rare surname. The surname Belen'Kii is habitual in Belarus, where it is quite a rare surname, Russia, and Kazakhstan, where it is a rare surname. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Belen'Kii | Belarus |
| Беленький | Ukraine, Kazakhstan, Belarus, Russia, Kyrgyzstan |