The Archdiocese of Arusha () is a Latin Church archdiocese of the Catholic Church in Arusha, Tanzania. The archdiocese is the metropolitan see for the Ecclesiastical Province of Arusha. The suffragan dioceses of the archdiocese are Mbulu, Moshi and Same.
The archdiocese covers an area of âÂÂâÂÂabout 67,340 square kilometres and includes the entire Arusha Region and two administrative districts of Manyara Region (Simanjiro and Kiteto) in north-eastern Tanzania.
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.
The seat of the archbishop is St. TheresaâÂÂs Metropolitan Cathedral in Arusha.