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Cognomen Madej (Madej
, Мадей
, Мадэй
) , in the world, is a common family name. The family name Madej is habitual in Eastern Europe, particularly Poland, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Czechia. In absolute terms, it is commonest in Poland, the United States, and Ukraine. Likewise, Madej is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Madej | Poland, France, United States, United Kingdom, Germany |
| Мадей | Kazakhstan, Russia, Bulgaria, Kyrgyzstan, Ukraine |
| Мадэй | Russia |