| Jurisdiction: | Diocese |
| Achonry | |
| Latin: | Dioecesis Achadensis |
| Local: | Deoise Achadh Conaire |
| Country: | Ireland |
| Territory: | Parts of counties Mayo, Roscommon and Sligo |
| Province: | Tuam |
| Area Sqmi: | 346 |
| Population: | 39,000 (est.) |
| Population As Of: | 2015 |
| Catholics: | 36,234 |
| Catholics Percent: | 92.9 |
| Parishes: | 23 |
| Denomination: | Roman Catholic |
| Rite: | Latin Rite |
| Established: | Between 1111 and 1152 |
| Cathedral: | Cathedral of the Annunciation of the Blessed Virgin Mary and St Nathy, Ballaghaderreen |
| Patron: | Nathy Attracta |
| Priests: | 41 (diocesan) 1 (Religious Orders) |
| Metro Archbishop: | Francis Duffy, Archbishop of Tuam |
| Map: | Roman Catholic Diocese of Achonry map.png |
| Website: | achonrydiocese.org |
| Apostolic Admin: | Kevin Doran, Bishop of Elphin |
The Diocese of Achonry (Irish: Deoise Achadh Conaire) is a Latin Church diocese of the Catholic Church in the western part of Ireland. It is one of the five suffragan sees of the Archdiocese of Tuam.[1] The diocese was often called the "bishopric of Luighne" in the Irish annals. It was not established at the Synod of Rathbreasail, but Máel Ruanaid Ua Ruadáin signed as "bishop of Luighne" at the Synod of Kells.[2]
At present there are twenty-three parishes in the diocese, located in Counties Mayo, Roscommon and Sligo. There are twenty-six priests involved in full-time parish ministry and four involved in secondary education.
On 27 January 2020 Pope Francis appointed Paul Dempsey — parish priest of Newbridge — as the new Bishop of Achonry.[3] He received episcopal ordination in the diocesan cathedral, which is dedicated to The Annunciation and St. Nathy, in Ballaghaderreen, on 30 August 2020.[4]
The diocese covers parts of counties Mayo, Roscommon and Sligo. The largest towns are Charlestown, Kiltimagh and Swinford.
See main article: Bishop of Achonry. List of bishops since the Reformation:[2] [5]