Surname Tchoudnovskaia (Tchoudnovskaia 
, Чудновская 
) , across the world, is a rare last name. The surname Tchoudnovskaia is habitual in Belarus, where it is a rare surname, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Tchoudnovskaia | Germany, Australia, United States |
| Чудновская | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |