| Jurisdiction: | Diocese |
| Xuân Lộc | |
| Latin: | Dioecesis Xuanlocensis |
| Local: | Giáo phận Xuân Lộc |
| Country: | Vietnam |
| Province: | Hồ Chi Minh City |
| Area Km2: | 5,965 |
| Population: | 3,910,000 |
| Population As Of: | 2022 |
| Catholics: | 1,073,179 |
| Catholics Percent: | 27.4 |
| Parishes: | 277 |
| Denomination: | Catholic |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 14 October 1965 |
| Cathedral: | Christ the King in Long Khánh |
| Patron: | Saint Joseph |
| Priests: | 465 |
| Bishop: | John Đo Văn Ngân |
| Metro Archbishop: | Joseph Nguyễn Năng |
| Suffragan: | for one --> |
| Archdeacon: | for one--> |
| Emeritus Bishops: | Joseph Đinh Đức Đạo Dominique Nguyễn Chu Trinh |
The Roman Catholic Diocese of Xuân Lộc (Latin: Dioecesis Xuanlocensis) is a suffragan Latin diocese in the ecclesiastical province of the Archdiocese of Ho Chi Minh city in southern Vietnam, yet depends on the missionary Dicastery for Evangelization. Its cathedral episcopal see is Cathedral of Christ the King (Nhà thờ Chính toà Chúa Giêsu Vua), dedicated to Christ the King, in Long Khánh, Đồng Nai, Southeastern Vietnam. The bishop, since January 16, 2021, is John Đỗ Văn Ngân.
As of 2014, the diocese pastorally served 921,489 Catholics (30.5% of 3,020,800 total) on 5,964 km² in 246 parishes with 498 priests (359 diocesan, 139 religious), 2,256 lay religious (447 brothers, 1,809 sisters) and 168 seminarians.
(all Roman Rite)