The Roman Catholic Diocese of Idiofa (Latin: Idiofaën(sis)) is a diocese located in the city of Idiofa in the ecclesiastical province of Kinshasa in the Democratic Republic of the Congo.

• 13 April 1937: Established as Apostolic Prefecture of Ipamu from the Apostolic Vicariate of Upper Kasai and Apostolic Vicariate of Koango
• 12 February 1948: Promoted as Apostolic Vicariate of Ipamu
• 10 November 1959: Promoted as Diocese of Ipamu
• 20 June 1960: Renamed as Diocese of Idiofa

• Bishops of Idiofa (Roman rite), below
  • Bishop José Moko Ekanga, P.S.S. (26 May 2009 – present )
  • Apostolic Administrator Bishop Louis Nzala Kianza (31 May 2006 – 26 May 2009)
  • Bishop Louis Mbwôl-Mpasi, O.M.I. (20 May 1997 – 31 May 2006)
  • Bishop Eugène Biletsi Onim (21 May 1970 – 4 November 1994)
  • Bishop René Toussaint, O.M.I. (20 June 1960 – 21 May 1970); see below
• Bishop of Ipamu (Roman rite), below
  • Bishop René Toussaint, O.M.I. (10 November 1959 – 20 June 1960); see above & below
• Vicars Apostolic of Ipamu (Roman rite), below
  • Bishop René Toussaint, O.M.I. (16 January 1958 – 10 November 1959); see above
  • Bishop Alfonso Bossart, O.M.I. (12 February 1948 – May 1957); see below
• Prefect Apostolic of Ipamu (Roman rite)
  • Father Alfonso Bossart, O.M.I. (11 June 1937 – 12 February 1948); see above

• Roman Catholicism in the Democratic Republic of the Congo

• GCatholic.org
• Catholic Hierarchy

4°57′56″S 19°35′28″E / 4.9656°S 19.5912°E / -4.9656; 19.5912