Ratko Perić (born 2 February 1944) is a prelate of the Catholic Church who served as the bishop of Mostar-Duvno and apostolic administrator of Trebinje-Mrkan from 1993 until his retirement in 2020.

Ratko Perić was born in the village of Tuk, in the municipality of Rovišće, near Bjelovar in present-day Croatia, where his parents, Grgo and Anica née Raguž,[1] moved from Rotimlja near Stolac.

He received a licentiate in theology at the Pontifical Urban University in Rome with the thesis "The Role of Cardinal Stepinac in Relations Between the Church and the State"[3] in June 1969.

[3] Perić continued his education at the Pontifical Urban University and gained a PhD on 10 December 1971 with the thesis "Meaning of Evangelisation in the Perspective of Anonymous Christianity"[1] under the mentorship of Carlo Molari.

[8] In June 1975, to settle jurisdictional disputes between the Franciscan Province of the Assumption of the Blessed Virgin Mary and the Diocese, Pope Paul VI issued a decree, Romanis Pontificibus, specifying which parishes the friars could retain and which were to be turned over to be administered by diocesan clergy.

Archbishop Marcello Zago, OMI, Secretary of the Congregation for the Evangelization of Peoples, Franciscan Minister General, Brother Giacomo Bini, and Bishop Perić, which read in part, "The Holy See and the Order intend to keep informed regarding the progress of the transfer.

[10][11] The abduction was retaliation for Perić's intention to replace the Franciscans with diocesan priests in several parishes[citation needed] as well because of his criticism of the unconfirmed Marian apparitions in Medjugorje.

[citation needed] In 1996, Perić ordered the Franciscans in Čapljina to give the parish to the diocesan priests, and the Pope sent an envoy to convince them to do so.

[citation needed] Provincial of the Franciscan Province of Herzegovina Tomislav Pervan convinced the congregation to stop protesting and remove the barricade.

In order not to mislead the faithful into believing that his statement was an official Church position, Archbishop Tarcisio Bertone, the Secretary to the Congregation for the Doctrine of the Faith that was presided over at the time by Cardinal Joseph Ratzinger, wrote in a letter to the bishop of Saint-Denis-de-La Réunion that "what Bishop Perić said in his letter [...] is and remains his personal opinion.