Family name Niedziela (Niedziela 
) , across the world, is quite a rare cognomen. The surname Niedziela is habitual in Poland, where it is quite a rare surname, Germany, where it is a rare surname, and Ireland. In absolute terms, it is the most numerous in Poland, the United States, and Germany. Also, Niedziela is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Niedziela | Germany, Poland, Brazil, United States, France |
| teofilia niedziela Polish Righteous Among the Nations, PL (b. 1887) |
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| józef niedziela (b. 1888) |
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| eugeniusz niedziela Polish Righteous Among the Nations, PL (b. 1908) |
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| waleria niedziela Polish Righteous Among the Nations, PL (b. 1910) |
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wojciech niedziela Polish musician, PL (b. 1961) |
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dorota niedziela Polish politician and deputy, PL (b. 1964) |
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| bruno niedziela football player (born 1923) (b. 1923) |
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| józef niedziela (b. 1920) |
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| zdzisław niedziela basketball player (1930-2010), PL (b. 1930) |
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| zdzisław niedziela BY (b. 1931) |
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| maurycy lucjan niedziela (b. 1934) |
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| maurycy niedziela (b. 1934) |
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| janusz niedziela Polish politician, PL (b. 1962) |
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| sebastian niedziela Polish musician, PL (b. 1975) |
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| krzysztof niedziela Polish sportsperson, PL (b. 1978) |
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