Renzo Gettegna, from the Union of Italian Jewish Communities, called it "offensive to the memory” of those who suffered in the Holocaust.
Nichi Vendola head of the Left, Ecology, Freedom (SEL) party tweeted: "To trivialise a terrible tragedy such as the Shoah for an everyday political polemic as Berlusconi has done is chilling."
Mr Berlusconi defended his comments saying: "My personal history, my friendship with Israel, my actions in office to help the state of Israel, don't allow for any doubt regarding my knowledge of the tragedy of the Holocaust and my respect for the Jewish people".