Surname Вадек (Вадек 
, Wadeck 
) , in all the world, is a very rare last name. The surname Вадек is habitual in the United States, where it is an extremely rare surname, Canada, and Brazil. Not in comparison with a country's population, it is the most numerous in the United States, Brazil, and Germany. Likewise, Вадек is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Вадек | Kazakhstan, Ukraine, Russia |
| Wadeck | Germany, Brazil, Canada, United States, France |