Family name Sładek (Sładek 
) , in the world, is a rare surname. The surname Sładek is habitual in Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sładek | Poland |
| jerzy sładek researcher, PL (b. 1954) |
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| krystyna sładek PL (b. 1950) |
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| krzysztof sładek Polish pulmonologist, PL |
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| andrzej sładek Ph.D. Uniwersytet Śląski w Katowicach 1979 |
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