Bartul Kačić OFM (1572 – 25 June 1645) was a Croatian prelate of the Catholic Church who served as the bishop of Makarska from 1615 to his death in 1645, at the same time, he administered the Diocese of Duvno.
During his stay in Zagreb, he visited the court of King Matthias of whom he asked to reestablish the dioceses of Makarska and Duvno and on the request of his fellow Franciscans, gained an order which forbade the uskoks to attack the Croatian coast.
[3] During his short stay in České Budějovice in 1614, Kačić received the news that King Matthias had nominated him for the office of the bishop of Makarska.
[3] The territory of the Diocese of Makarska covered the parts of Herzegovina west from the Neretva river as well, at the time under the Ottoman control.
[8] On 2 July 1644 he asked the Congregation for the Propagation of the Faith to assign him a bishop coadjutor with succession rights, proposing his nephew and a fellow Franciscan from Makarska Petar Kačić for the office.
On 6 July 1626, he reported to the Congregation for the Propagation of the Faith that he visited the parishes under the care of the St. Peter's Friary in Rama with the approval of the bishop of Bosnia.