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Cognomen Duk (Duc
, Duk
, Дук
) , across the world, is a common family name. The family name Duk is habitual in Vietnam, where it is quite a common surname, Switzerland, and Macao, where it is quite a rare surname. In absolute terms, the name is most common in Vietnam, France, and Malaysia. Likewise, Duk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duc | Poland, France, Vietnam, United States, Democratic Republic of the Congo |
| Duk | Malaysia, Poland, France, Vietnam, United States |
| Дук | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Док | Kazakhstan, Kyrgyzstan, Russia, Ukraine |