The Roman Catholic Diocese of Iringa (Latin: Dioecesis Iringaënsis) is a diocese located in Iringa in the ecclesiastical province of Mbeya in Tanzania.

• March 3, 1922: Established as Apostolic Prefecture of Iringa from the Apostolic Vicariate of Dar-es-Salaam
• January 8, 1948: Promoted as Apostolic Vicariate of Iringa
• March 25, 1953: Promoted as Diocese of Iringa
• December 21, 2018: Changed metropolia from Songea to Mbeya

• Prefects Apostolic of Iringa (Roman rite)
  • Fr. Francesco Cagliero, I.C.M. (1922.05.10 – 1935)
  • Fr. Attilio Beltramino, I.C.M. (1936.02.18 – 1948.01.08 see below)
• Vicar Apostolic of Iringa (Roman rite)
  • Bishop Attilio Beltramino, I.C.M. (see above 1948.01.08 – 1953.03.25 see below)
• Bishops of Iringa (Roman rite)
  • Bishop Attilio Beltramino, I.C.M. (see above 1953.03.25 – 1965.10.03)
  • Bishop Mario Epifanio Abdallah Mgulunde (1969.10.23 – 1985.03.09), appointed Archbishop of Tabora
  • Bishop Norbert Wendelin Mtega (1985.10.28 – 1992.07.06), appointed Archbishop of Songea
  • Bishop Tarcisius Ngalalekumtwa (since 1992.11.21)

• Roman Catholicism in Tanzania

• GCatholic.org
• Catholic Hierarchy

7°47′01″S 35°41′22″E / 7.7836°S 35.6895°E / -7.7836; 35.6895