Pierre Nguyễn Văn Viên

Pierre Nguyễn Văn Viên is a Vietnamese Roman Catholic prelate, serving as Auxiliary Bishop of the Roman Catholic Diocese of Vinh, Titular Bishop of the Megalopolis in Proconsulari (Titular See) and Apostolic Administrator of the Roman Catholic Diocese of Hưng Hóa, Vietnam.

Early life and education
Nguyen was born in Quảng Bình province, Vietnam on 8 January 1965. He served in the army as a mandatory service. He acquired a doctorate in economics from the University of Agronomy, Hue.

Priesthood
On 3 October 1999, Nguyen was ordained a priest. After ordination, he worked in Australia among Vietnamese immigrants. He acquired his doctorate in theology in Australia.

Episcopate
Nguyen was appointed Auxiliary Bishop of the Roman Catholic Diocese of Vinh and Titular Bishop of the Megalopolis in Proconsulari (Titular See) on 15 June 2013 and consecrated as a bishop on 4 September 2013 by Bishop Paul Nguyễn Thái Hợp. He was appointed Apostolic Administrator of the Roman Catholic Diocese of Hưng Hóa on 29 August 2020