Ireneusz is a Polish male given name that comes from the Greek eirenaios.
Ireneusz may refer to:
Ireneusz Ciurzyński, Polish sprint canoeist who competed in the mid-1980sIreneusz Jeleń (born 1981), Polish footballer who plays as a right-winger or strikerIreneusz Krosny (born 1968), Polish actor and mime artistIreneusz Kwieciński, Polish judokaIreneusz Marcinkowski (born 1977), Polish footballerIreneusz Paliński (1932–2006), Polish weightlifterIreneusz Raś (born 1972), Polish politicianIreneusz Socha (born 1964), drummer, composer