The diocese of Lạng Sơn and Cao Bằng () is a

Roman Catholic The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...

diocese in northern Vietnam's

Lạng Sơn Lạng Sơn () is a city in far Northern Vietnam, and the capital of Lạng Sơn Province. It is accessible by road and rail from Hanoi, the Vietnamese capital, and it is the northernmost point on National Route 1. History Due to its geograph ...

and

Cao Bằng Cao Bằng () is a city in northern Vietnam. It is the capital and largest settlement of Cao Bằng Province. It is located on the bank of the Bằng Giang river, and is around away from the border with China's Guangxi region. According to the 2 ...

provinces. Joseph Chau Ngoc Tri ( vn) was appointed in 2016 as the diocese's bishop. The creation of the diocese in its present form was declared on 24 November 1960. The diocese covers an area of 17,815 km², and is a

suffragan diocese A suffragan diocese is one of the dioceses other than the metropolitan archdiocese that constitute an ecclesiastical province. It exists in some Christian denominations, in particular the Catholic Church, the Coptic Orthodox Church of Alexandr ...

of the

Archdiocese of Hanoi The Metropolitan Archdiocese of Hanoi (, , ) is a Catholic Church, Catholic metropolitan archdiocese of Vietnam. It is one of the earliest in the history of the Catholic Church in Vietnam. The creation of the diocese in present form was declare ...

. By 2004, the diocese had 6,078 believers (0.5% of the population), 4 priests and 11 parishes. Saint Dominic Cathedral in Lạng Sơn has been assigned as the

Cathedral A cathedral is a church (building), church that contains the of a bishop, thus serving as the central church of a diocese, Annual conferences within Methodism, conference, or episcopate. Churches with the function of "cathedral" are usually s ...

of the

diocese In Ecclesiastical polity, church governance, a diocese or bishopric is the ecclesiastical district under the jurisdiction of a bishop. History In the later organization of the Roman Empire, the increasingly subdivided Roman province, prov ...

.GCatholic.org
/ref> In June 2007, fifty deacons were officially ordained in Lạng Sơn.

Ordinaries

Prefects apostolics of Lang Són et Cao Bang (1913-1939)

Vicars apostolic of Lang Són et Cao Bang (1939-1960)

Bishops of Lang Són et Cao Bang (1960-present)

;Coadjutor Vicar Apostolic of Lang Són et Cao Bang (1948-1960) ;Auxiliary Bishop of Lang Són et Cao Bang (1960)

References

Lang Son and Cao Bang Christian organizations established in 1960 Roman Catholic dioceses and prelatures established in the 20th century Lang Son and Cao Bang, Roman Catholic Diocese of 1960 establishments in North Vietnam {{Vietnam-RC-diocese-stub