The Diocese of Phát Diệm (Latin: Dioecesis de Phat Diem) is a Roman Catholic diocese of Vietnam.

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Quick Facts Diocese of Phát DiệmDioecesis de Phat Diem Giáo phận Phát Diệm, catholic ...

Diocese of Phát Diệm Dioecesis de Phat Diem Giáo phận Phát Diệm
catholic
Phát Diệm Cathedral
Location
Country	Vietnam
Ecclesiastical province	Hanoi
Metropolitan	Hanoi
Coordinates	20°05′40″N 106°04′44″E
Statistics
Area	1,787 km2 (690 sq mi)
Population - Total - Catholics	(as of 2004) 907,520 144,721 (15.9%)
Information
Denomination	Roman Catholic
Sui iuris church	Latin Church
Rite	Roman Rite
Cathedral	Cathedral of Mary Queen of the Rosary
Patron saint	Saints Peter and Paul
Language	Vietnamese
Current leadership
Pope	Francis
Bishop	Peter Kiều Công Tùng
Metropolitan Archbishop	Joseph Vũ Văn Thiên
Bishops emeritus	Joseph Nguyên Van Yên Bishop Emeritus (1998–2007)
Website
phatdiem.org

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The creation of the diocese in present form was declared November 24, 1960.

The diocese covers an area of 1,787 km², and is a suffragan diocese of the Archdiocese of Hanoi.

By 2004, the diocese of Phát Diêm had about 144,721 believers (15.9% of the population), 31 priests and 65 parishes.^[1]

Queen of the Rosary Cathedral in Kim Sơn District (Ninh Bình Province) has been assigned as the Cathedral of the diocese.^[2] This cathedral complex was built between 1875 and 1899 and comprises four churches and one basilica, as well as several parks, ponds and grottos.

• Jean-Pierre-Alexandre Marcou, M.E.P. (15 April 1901 - 20 October 1935)
• Jean-Baptiste Nguyễn Bá Tòng (20 October 1935 - 8 June 1945)
• Thaddée Anselme Lê Hữu Từ, O. Cist. (14 June 1945 - 1959)
• Paul Bùi Chu Tạo (24 January 1959 - 3 November 1998)
• Joseph Nguyễn Văn Yến (3 November 1998 - 14 April 2007)
• Joseph Nguyễn Năng (25 July 2009 - 19 October 2019)
• Peter Kiều Công Tùng (25 March 2023^[3] – present)