| Jurisdiction: | Diocese |
| Abancay | |
| Latin: | Dioecesis Abancaiensis |
| Country: | Peru |
| Province: | Cuzco |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Area Km2: | 12,950 |
| Population: | 335,628 |
| Population As Of: | 2005 |
| Catholics: | 310,628 |
| Catholics Percent: | 92.6 |
| Bishop: | Gilberto Gómez González |
| Parishes: | 17 |
| Priests: | 58 |
The Diocese of Abancay is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in Peru. It was erected on April 28, 1958 from the territory of the Archdiocese of Cuzco with Alcides Mendoza Castro being made its first bishop. It is a suffragan in the ecclesiastical province to the metropolitan Archdiocese of Cuzco.
Gilberto Gómez González has been the bishop of the diocese since 2009.