| Jurisdiction: | Diocese |
| Ba Ria | |
| Latin: | Dioecesis Barianensis |
| Local: | Giáo phận Bà Rịa |
| Coat: | Coat of arms of Emmanuel Nguyễn Hồng Sơn.svg |
| Coat Size: | 200px |
| Coat Caption: | Coat of Arms of Bishop Sơn |
| Province: | Sài Gòn |
| Area Km2: | 1,988 |
| Population: | 1,011,971 |
| Population As Of: | 2012 |
| Catholics: | 247,252 |
| Catholics Percent: | 24.4 |
| Parishes: | 79 |
| Denomination: | Catholic |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Cathedral: | Cathedral of Saint Philip and Saint James in Bà Rịa |
| Patron: | Mary, Mother of God |
| Bishop: | Emmanuel Nguyễn Hồng Sơn[1] |
| Metro Archbishop: | Joseph Nguyễn Năng |
| Vicar General: | Joseph Võ Công Tiến |
| Emeritus Bishops: | Thomas Nguyễn Văn Trâm |
The Diocese of Bà Rịa (Latin: Dioecesis Barianensis) is a Latin rite suffragan diocese in the ecclesiastical province of the Metropolitan Archdiocese of Ho Chi Minh city, in southern Vietnam, yet it depends on the missionary Dicastery for Evangelization.
Its cathedral episcopal see is Cathedral of Mary, Mother of God, dedicated to the Apostles Saint Philip and Saint James, in the city of Bà Rịa, Bà Rịa–Vũng Tàu province, Southeastern Vietnam.
The bishopric was established on 22 November 2005 as Diocese of Ba Ria / Bà Rịa (Tiếng Việt) / 巴地 (正體中文) / Barianen(sis) (Latin adjective), on territory detached from the Diocese of Xuân Lôc.[2]
According to Jesuit missionaries, in 1670, in Xích Lam (Ðất Ðỏ), near Bà Rịa, there were nearly 300 Catholic families. According to a report of Bishop M. Labbé, in 1670, "Dong Nai had at least over 2,000 parishioners". According to Adrien Launay, in 1747, the Đồng Nai region already had parish communities in Bengo (Bến Gỗ), R. Dou-nai (Đồng Nai), Dalua (Đá lửa ?)[3] [4] Ke-tat (Cái Tắt / Cái Tắc ?)[5] [6] Dou-mon (Đồng Môn ?),[7] R. Moxoai (Mô Xoài), Ba-ria (Bà Rịa), Nui-nua (Núi Nứa) and Ðất Ðỏ, under the care of MEP and Jesuit missionaries.
As per 2014, the diocese pastorally served 254,302 Catholics (17.8% of 1,427,024 total) on an area of 1,989 km² in 84 parishes with 166 priests (101 diocesan, 65 religious), 799 lay religious (282 brothers, 517 sisters) and 71 seminarians.