Surname Zadorozhnii (Задорожный 
, Задорожний 
, Zadorozhnii 
) , around the world, is a common cognomen. The last name Zadorozhnii is habitual in Ukraine, where it is quite a common surname, Kazakhstan, where it is quite a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Задорожный | Kyrgyzstan, Russia, Belarus, Kazakhstan, Ukraine |
| Задорожний | Russia, Belarus, Kazakhstan, Ukraine, United States |
| Zadorozhnii | Spain, Russia, Georgia, Ukraine, Poland |
| Задорожнии | Russia |
Задорожнйй, and Задорожній
| vladimir grigorievich zadorozhnii Ph.D. Voronezh State University 1970 |
|