The Archdiocese of Arusha is among
34 dioceses of the
Catholic Church in Tanzania, which practise the
Roman Rite. Evangelisation in Arusha started on July 15, 1926 when
Holy Ghost Fathers missionaries from
Kilimanjaro were invited to visit Arusha. At that time, Arusha was the part of
Apostolic Vicariate of Kilima-Njaro. These priests arrived in Arusha and opened a mission in an area known as Mesopotamia. The Mission centre of Mesopotamia developed slowly into a parish, which became known as St Theresa of the Child Jesus Parish. • March 1, 1963: Established as Diocese of Arusha from the
Diocese of Moshi • March 16, 1999: Elevated as Metropolitan Archdiocese of Arusha ==Special churches==