Jacek Marek Zieliński (Polish pronunciation: [ˈjat͡sɛk ˈmarɛk ʑɛˈʎiɲskʲi]; born 10 October 1967) is a Polish football executive, former professional manager and player who played as a defender.

[3] He used to work as an assistant manager of the Poland national team.

[4] Born in Wierzbica, Radom County, Zieliński spent most of his career playing for Legia Warsaw.

He made 60 appearances and scored one goal and was a participant at the 2002 FIFA World Cup.

This biographical article related to a Polish association football defender is a stub.