| Jurisdiction: | Diocese |
| Tarija | |
| Latin: | Dioecesis Tariiensis |
| Local: | Diócesis de Tarija |
| Country: | Bolivia |
| Metropolitan: | Sucre |
| Province: | Sucre |
| Area Km2: | 37,623 |
| Population: | 492,000 |
| Population As Of: | 2010 |
| Catholics: | 348,034 |
| Catholics Percent: | 70.7 |
| Parishes: | 22 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 11 November 1924 (years ago) |
| Cathedral: | Cathedral Basilica of Our lady of Peace in Tarija |
| Bishop: | Jorge Ángel Saldías Pedraza, O.P. |
| Bishop Title: | Bishop |
| Metro Archbishop: | Ricardo Ernesto Centellas Guzmán |
| Emeritus Bishops: | Francisco Javier Del Río Sendino |
| Map: | Bistum Tarija.svg |
The Roman Catholic Diocese of Tarija (Latin: Dioecesis Tariiensis) is a diocese located in the city of Tarija in the ecclesiastical province of Sucre in Bolivia.