Date of Birth: 
Place of Birth: Dąbrowa Górnicza, Silesian Voivodeship, Poland
About Jacek Kościelniak
- Jacek Zygmunt Koscielniak (born October 9, 1963 in Dabrowa Górnicza) is a Polish politician.
- He was elected to the Sejm on September 25, 2005 getting 3765 votes in 32 Sosnowiec district, candidating from the Law and Justice list.
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