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Pope Leo XIV Erects Bariadi Catholic Diocese in Tanzania, Appoints Pioneer Local Ordinary

Bishop Prosper Baltazar Lyimo, Bishop of the newly created Diocese of Bariadi in Tanzania. credit: Garissa Cathedral Church/Facebook page.

Pope Leo XIV has erected the Catholic Diocese of Bariadi as the 36th Episcopal See in Tanzania, carved out from the Catholic Diocese of Shinyanga of the East African nation.

In the Holy See Press Office’s Thursday, January 8 publication announcing the erection of Tanzania’s newest Catholic Diocese, the Holy Father also appointed Bishop Prosper Baltazar Lyimo, who has been serving as Auxiliary Bishop of Arusha Archdiocese, the pioneer Local Ordinary of Bariadi Diocese. 

The newly established Bariadi Diocese becomes the eighth Suffragan Diocese of the Metropolitan See of Mwanza alongside Bukoba, Bunda, Geita, Kayanga, Musoma, Rulenge-Ngara, and Shinyanga.

According to the Vatican January 2026 statistics, the newly erected Tanzanian Diocese that measures 16,638 km² starts with 366,000 Catholics out of 1,221,540 people, representing 29.96 percent of the total population of the territory of the Episcopal See.

Set to temporarily have St. John the Evangelist in the city of Bariadi as its Cathedral, awaiting the completion of the Church dedicated to St. Luke, the newly erected Diocese has 19 Parishes, 43 Priests, 35 of them Diocesan, and eight members of Institutes of Consecrated Life and the Societies of Apostolic Life (ICLSAL).

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The pioneer Local Ordinary of the new Diocese, Bishop Baltazar, was born on 20 August 1964 in the Catholic Diocese of Moshi.

After his primary studies in Maua and Ngurdoto, Arusha, and his higher studies at the minor seminary of Arusha, St. Thomas Aquinas, he attended philosophical studies at the Seminary of  Our Lady of Angels in Kibosho, Moshi, and theological studies at St. Paul in Kipalapala, Tabora.

He was ordained a Priest for the Metropolitan Archdiocese of Arusha on 4 July 1997. He pursued further studies, obtaining a Licentiate in Canon Law from the Pontifical Urbaniana University in Rome and later a Doctorate in Canon Law from St. Paul University in Ottawa, Canada.

As a Priest, he served in various capacities, including Formator at the St. Thomas Aquinas Minor Seminary in Arusha, Oldonyosambu; Chancellor of the Archdiocese; Chancellor and Judicial Vicar of the Archdiocese of Arusha.

On 11 November 2014, he was appointed Titular Bishop of Vanariona and Auxiliary Bishop of the Catholic Archdiocese of Arusha, Tanzania, receiving Episcopal Consecration on 15 February 2015.

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Silas Mwale Isenjia is a Kenyan journalist with a great zeal and interest for Catholic Church related communication. He holds a Bachelor’s Degree in Linguistics, Media and Communication from Moi University in Kenya. Silas has vast experience in the Media production industry. He currently works as a Journalist for ACI Africa.