The Roman Catholic Diocese of Varanasi (Latin: Varanasien[sis]) is a Latin suffragan diocese in the ecclesiastical province of Agra in northern India's vast state Uttar Pradesh. Its cathedral episcopal see is St. Mary's Cathedral in the city of Varanasi.

• Established on 11 July 1946 as Apostolic Prefecture of Gorakhpur, on territory split off from the Diocese of Allahabad, exempt, i.e. directly subject to the Holy See
• 17 September 1958: Renamed as Apostolic Prefecture of Benares-Gorakhpur
• Promoted on 5 June 1970 as Diocese of Banaras (Benares), losing its exempt status by becoming a suffragan of the Metropolitan Archdiocese of Agra
• 14 May 1971: Renamed as Diocese of Varanasi (as the city had changed its name).

(all Latin, Roman Rite)

Apostolic Prefects of Gorakhpur

• Father Joseph Emil Malenfant, OFMCap (6 June 1947 – 17 September 1958 see below)

Apostolic Prefects of Benares-Gorakhpur

• Joseph Emil Malenfant, OFMCap (see above 17 September 1958 – 1970)

Bishops of Banaras

• Patrick Paul D'Souza (5 June 1970 – 14 May 1971 see below)

Bishops of Varanasi

• Patrick Paul D'Souza (see above 14 May 1971 – 24 February 2007), Vice-President of the Conference of Catholic Bishops of India (1996 – 1998)
• Raphy Manjaly (24 February 2007 – 2013.10.17), later Bishop of Allahabad (India, in the same province) (2013.10.17 – ...)
• Eugene Joseph (2015.05.30 – ...)

• Diocese of Varanasi Official Website Archived 18 June 2016 at the Wayback Machine
• GCatholic.org, with incumbent biography links
• Catholic Hierarchy

25°19′52″N 82°59′03″E / 25.3312°N 82.9842°E / 25.3312; 82.9842