The Roman Catholic Diocese of Araçuaí (Latin: Dioecesis Arassuahyensis) is a diocese located in the city of Araçuaí in the ecclesiastical province of Diamantina in Brazil.

According to biographical information contained in the Vatican Press Office's News.va and Vatican Information Service's (VIS) daily bulletins (in the section regarding episcopal appointments) for Wednesday, June 13, 2012, Pope Benedict XVI appointed the Reverend Father Marcello Romano, a member of the clergy of, and at the time the Diocesan Administrator of, the Roman Catholic Diocese of Guanhaes, as the ninth Bishop of Araçuaí. For more information on the then Bishop-elect of this Diocese, please see the two news releases.

• August 25, 1913: Established as Diocese of Araçuaí from the Diocese of Diamantina

• Bishops of Araçuaí (Latin Rite)
  • Serafim Gomes Jardim da Silva (1914.03.12 – 1934.05.26), appointed Archbishop of Diamantina, Minas Gerais
  • José de Haas, O.F.M. (1937.03.20 – 1956.08.01)
  • José Maria Pires (1957.05.25 – 1965.12.02), appointed Archbishop of Paraíba
  • Altivo Pacheco Ribeiro (1966.06.27 – 1973.11.10)
  • Silvestre Luís Scandián, S.V.D. (1975.01.04 – 1981.08.18), appointed Coadjutor Archbishop of Vitória, Espirito Santo
  • Crescênzio Rinaldini (1982.05.10 – 2001.08.08)
  • Dario Campos, O.F.M. (2001.08.08 – 2004.06.23), appointed Bishop of Leopoldina, Minas Gerais; future Archbishop
  • Severino Clasen, O.F.M. (2005.05.11 – 2011.07.06), appointed Bishop of Caçador, Santa Catarina
  • Marcello Romano (2012.06.13 - 2020.03.25)

• Dario Campos, O.F.M. (2000-2001)

• GCatholic.org
• Catholic Hierarchy

16°51′00″S 42°04′12″W / 16.8500°S 42.0700°W / -16.8500; -42.0700