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

• 26 February 1934: Established as Apostolic Vicariate of Boma from the Apostolic Prefecture of Lulua and Central Katanga and Apostolic Vicariate of Léopoldville
• 10 November 1959: Promoted as Diocese of Boma

• Bishops of Boma (Roman rite), below
  • Bishop José-Claude Mbimbi Mbamba (19 March 2021 – ...)
  • Bishop Cyprien Mbuka Di Nkuanga, C.I.C.M. (13 March 2001 – 19 March 2021)
  • Bishop Joachim Mbadu Kikhela Kupika (22 November 1975 – 21 May 2001), appointed Titular Bishop of Belesasa
  • Bishop Raymond Ndudi (9 February 1967 – 22 November 1975)
  • Bishop André Jacques, C.I.C.M. (10 November 1959 – 9 February 1967); see below
• Vicars Apostolic of Boma (Roman rite), below
  • Bishop André Jacques, C.I.C.M. (23 December 1950 – 10 November 1959); see above
  • Bishop Joseph Vanderhoven, C.I.C.M. (26 February 1934 – 4 December 1949)

• Joachim Mbadu Kikhela Kupika (1975)

• Raymond (Nianga-Nzita) Ndudi (1962-1967), appointed Bishop here
• Cyprien Mbuka, C.I.C.M. (1997-2001), appointed Bishop here

Cathedral of Our Lady of the Assumption, Boma

• Roman Catholicism in the Democratic Republic of the Congo

• GCatholic
• Catholic Hierarchy

5°51′13″S 13°03′24″E / 5.8536°S 13.0566°E / -5.8536; 13.0566