Roman Catholic Diocese of Lạng Sơn and Cao Bằng

The diocese of Lạng Sơn and Cao Bằng (Dioecesis Langsonensis et Caobangensis) is a Roman Catholic diocese in northern Vietnam's Lạng Sơn and Cao Bằng 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 of the Archdiocese of Hanoi. 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 of the diocese. In June 2007, fifty deacons were officially ordained in Lạng Sơn.

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)