| Jurisdiction: | Diocese |
| Sonsonate | |
| Latin: | Dioecesis Sonsonatensis |
| Country: | El Salvador |
| Metropolitan: | José Luis Escobar Alas |
| Province: | Province of San Salvador |
| Area Km2: | 1,225 |
| Population: | 548,000 |
| Population As Of: | 2010 |
| Catholics: | 439,000 |
| Catholics Percent: | 80.1 |
| Parishes: | 26 |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 31 May 1986 (years ago) |
| Bishop Title: | Bishop |
| Map: | El Salvador - Diocesi di Sonsonate.jpg |
The Diocese of Sonsonate is a Latin Church ecclesiastical territory or diocese of the Catholic Church in El Salvador. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of San Salvador. The Diocese of Sonsonate was erected on 31 May 1986.