| Jurisdiction: | Diocese |
| Puerto Plata | |
| Latin: | Dioecesis Portus Argentarii |
| Local: | Diócesis de Puerto Plata |
| Country: | Dominican Republic |
| Metropolitan: | Puerto Plata |
| Territory: | Puerto Plata Province |
| Province: | Province of Santiago de los Caballeros |
| Area Km2: | 2,700 |
| Population: | 346,520 |
| Population As Of: | 2004 |
| Catholics: | 338,560 |
| Catholics Percent: | 97.7 |
| Parishes: | 31 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 16 December 1996 (years ago) |
| Cathedral: | Cathedral of St. Philip the Apostle |
| Bishop Title: | Bishop |
| Metro Archbishop: | Freddy Antonio de Jesús Bretón Martínez Archbishop of Santiago de los Caballeros |
| Emeritus Bishops: | Gregorio Nicanor Peña Rodríguez (1996-2004) |
| Map: | Diócesis_de_Puerto_Plata.svg |
The Roman Catholic Diocese of Puerto Plata (la|Dioecesis Portus Argentarii) (erected 16 December 1996) is a suffragan diocese of the Archdiocese of Santiago de los Caballeros. The diocese is located in the province of Puerto Plata, in the northern section of the Dominican Republic.The cathedral of the diocese is the Cathedral of St. Philip the Apostle, which is located in the city of San Felipe de Puerto Plata,