Paškal Buconjić was Herzegovinian Croat Franciscan and a prelate of the Catholic Church who served as the first bishop of Mostar-Duvno from 1881 to 1910, as the apostolic administrator of Trebinje-Mrkan from 1890 to 1910, as the apostolic vicar of Herzegovina from 1880 to 1881, and as custos of the Franciscan Custody of Herzegovina between 1874 and 1879.

The Diocese of Mostar-Duvno is a Latin Church diocese of the Catholic Church in Bosnia and Herzegovina. It encompasses northern Herzegovina. The episcopal seat is in Mostar, Bosnia and Herzegovina. It was formed on 5 July 1881, when the Apostolic Vicariate of Herzegovina was elevated to the diocese. It is the largest Catholic diocese in Bosnia and Herzegovina by the number of Catholics.