Family name Mudryak (Mudryak 
, Мудряк 
) , in the world, is a rare cognomen. The surname Mudryak is habitual in Ukraine, where it is quite a rare surname, Belarus, where it is a rare surname, and Kazakhstan. In absolute terms, it most frequently occurs in Ukraine, Russia, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Mudryak | Russia, Spain, Italy, United States, Romania |
| Мудряк | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| maria mudryak Kazakhstani operatic soprano, KZ (b. 1994) |
|