The Bishop of Mostar-Duvno is the head of the Roman Catholic Diocese of Mostar-Duvno, located in Bosnia and Herzegovina. It is responsible for looking after the diocese's spiritual and administrative needs. The Diocese of Mostar-Duvno is part of the ecclesiastical province of Vrhbosna and thus is a suffragan of that archdiocese. Since 1890, the bishops of Mostar-Duvno have also served as apostolic administrators of the Diocese of Trebinje-Mrkan. The current bishop is Petar Palić, who serves since 2020 and is the 6th ordinary.