Željko Mavrovic (Serbo-Croatian pronunciation: ['?e??ko 'm??vro?it?]; ZHEL-koh MAV-ro-witch; born 17 February 1969) is a Croatian former professional boxer.
In 1998, as an undefeated challenger, he faced Lennox Lewis for the WBC heavyweight title, but lost in what would be his final fight.
After retiring from boxing, Mavrovic became an entrepreneur.