Roman Catholic Diocese of Banja Luka

Diocese of Banja Luka Dioecesis Banialucensis Бањалучка Епархија Banjolučka biskupija
Cathedral of Saint Bonaventure
Coat of Arms of diocese of Banja Luka
Location
Country	Bosnia and Herzegovina
Territory	Republika Srpska
Ecclesiastical province	Archdiocese of Vrhbosna
Deaneries	Banja Luka Livno Jajce Bihać Prnjavor Bosanska Gradiška
Statistics
Area	16,457 km2 (6,354 sq mi)
Population - Total - Catholics	(as of 2022) 735,000[1] 24,660[1] (3.36%)
Parishes	48[1]
Information
Denomination	Catholic
Sui iuris church	Latin Church
Rite	Roman Rite
Established	5 July 1881
Cathedral	Cathedral of Saint Bonaventure
Patron saint	Saint Bonaventure
Secular priests	34[2]
Current leadership
Pope	Francis
Bishop	Željko Majić
Metropolitan Archbishop	Tomo Vukšić
Vicar General	Anto Orlovac
Bishops emeritus	Franjo Komarica, Marko Semren
Map
Website
biskupija-banjaluka.org

The Diocese of Banja Luka (Latin: Dioecesis Banialucensis; Serbo-Croatian: Бањалучка Епархија, romanized: Banjolučka biskupija) is a Latin Church diocese of the Catholic Church in western Bosnia. The diocese is centred in the city of Banja Luka, Republika Srpska, Bosnia and Herzegovina.

Erected on July 5, 1881, the diocese is a suffragan of the Archdiocese of Vrhbosna, as the Diocese of Banjaluka. In 1985, the name of the diocese was split to the current diocese of Banja Luka.

The current bishop of Banja Luka is Rev. Željko Majić.