| Jurisdiction: | Diocese |
| Trapani | |
| Latin: | Dioecesis Drepanensis |
| Local: | Diocesi di Trapani |
| Country: | Italy |
| Territory: | Trapani, Erice, Paceco, Valderice, San Vito Lo Capo, Custonaci, Alcamo, Castellammare del Golfo, Buseto Palizzolo, Calatafimi-Segesta, Favignana |
| Province: | Palermo |
| Area Km2: | 1,089 |
| Area Sqmi: | 420 |
| Population: | 208,084 |
| Population As Of: | 2010 |
| Catholics: | 207,300 |
| Catholics Percent: | 99,6% |
| Parishes: | 87 |
| Rite: | Latin Rite |
| Established: | May 31, 1844 |
| Cathedral: | Cathedral Basilica of St. Lawrence the Martyr in Trapani |
| Patron: | Our Lady of Trapani |
| Priests: | 115 |
| Bishop: | Pietro Maria Fragnelli |
| Metro Archbishop: | Paolo Romeo |
| Suffragan: | for one--> |
| Archdeacon: | for one--> |
| Emeritus Bishops: | Francesco Miccichè |
| Map: | Diocesi di Trapani.png |
| Website: | www.diocesi.trapani.it |
The Diocese of Trapani (Latin: Dioecesis Drepanensis) is a Latin diocese of the Catholic Church in Sicily. It is a suffragan of the archdiocese of Palermo.
Trapani was subject to the see of Mazzara, from the Norman Conquest until 1844, when the diocese was created. Its first bishop was the Redemptorist Vincenzo M. Marolda.[1]