| Jurisdiction: | Diocese |
| Nicosia | |
| Latin: | Dioecesis Nicosiensis o Herbitensis |
| Country: | Italy |
| Province: | Messina-Lipari-Santa Lucia del Mela |
| Area Km2: | 1,475 |
| Population: | 79,068 |
| Population As Of: | 2013 |
| Catholics: | 78,727 |
| Catholics Percent: | 99.6 |
| Parishes: | 40 |
| Denomination: | Catholic Church |
| Rite: | Roman Rite |
| Established: | 17 March 1817 (years ago) |
| Cathedral: | Basilica Cattedrale di S. Nicola di Bari |
| Priests: | 55 (diocesan) 6 (Religious Orders) 7 Permanent Deacons |
| Bishop Title: | Bishop |
| Bishop: | Salvatore Muratore |
| Map: | Diocesi di Nicosia.png |
| Website: | www.diocesinicosia.it |
The Diocese of Nicosia (la|Dioecesis Nicosiensis o Herbitensis) is a Latin diocese of the Catholic Church in Sicily. It is a suffragan of the Archdiocese of Messina-Lipari-Santa Lucia del Mela.[1]
The current bishop is Salvatore Muratore.[2]
The diocese of Nicosia has existed since 1817.[3] Its first bishop was Cajetan M. Averna. Within the diocese is the ancient city of Troina, which was briefly an episcopal see from 1087 to 1090.