Family name Rudenskiy (Руденский 
, Rudenskiy 
) , in all the world, is a rare cognomen. The cognomen Rudenskiy is characteristic of Russia, where it is a rare surname, Belarus, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Руденский | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Rudenskiy | Ukraine, United States |