Cognomen Frederyk (Фредерик 
, Frederyk 
) , worldwide, is a very rare surname. The cognomen Frederyk is habitual in Bulgaria, where it is a rare surname, Venezuela, where it is a very rare surname, and Russia. More prevalently, Frederyk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Фредерик | Russia, Kyrgyzstan, Estonia, Belarus, Bulgaria |
| Frederyk | Germany, Mexico, France, Brazil, Venezuela |