The Roman Catholic Diocese of Allahabad (Latin: Allahabaden(sis)) is a diocese with its see located in the city of Prayagraj in the ecclesiastical province of Agra in India.

The Diocese of Allahabad is spread over 13 districts of Uttar Pradesh.

These are Ambedkarnagar, Amethi, Ayodhya, Fatehpur, Kanpur City, Kanpur Dehat, Kaushambi, Mirzapur, Pratapgarh, Prayagraj, Rae Bareli, Sonbhadra, and Sultanpur.

[1] Bishop Louis Mascarenhas (24 August 2023-till now)

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