The Roman Catholic Diocese of Lwena (Latin: Dioecesis Lvenana) is a diocese located in the city of Lwena in the ecclesiastical province of Saurímo in Angola.

• 1 July 1963: Established as Diocese of Luso from the Diocese of Silva Porto
• 16 May 1979: Renamed as Diocese of Lwena
• 12 April 2011: Changed suffragans from Huambo to Saurímo

The Cathedral of the diocese is Sé Catedral de Nossa Senhora da Assunção (Cathedral of the Assumption of Our Lady) in Lwena.

• Bishops of Lwena (Roman rite), below
  • Bishop Martin Lasarte Topolanski (July 1, 2023-)
  • Bishop Jesús Tirso Blanco, S.D.B. (26 November 2007 – 22 February 2022)
  • Bishop Gabriel Mbilingi, C.S.Sp. (7 June 2000 – 11 December 2006), Appointed Coadjutor Archbishop of Lubango
  • Bishop José Próspero da Ascensão Puaty (16 May 1979 – 7 June 2000); see below
• Bishops of Luso (Roman rite), below
  • Bishop José Próspero da Ascensão Puaty (3 February 1977 – 16 May 1979); see above
  • Bishop Francisco Esteves Dias, O.S.B. (1 July 1963 – 13 April 1976)

• Gabriel Mbilingi, C.S.Sp. (1999-2000)

• José Manuel Imbamba, appointed Bishop of Dundo in 2008

• Roman Catholicism in Angola

• GCatholic.org

11°47′16″S 19°54′49″E / 11.7879°S 19.9137°E / -11.7879; 19.9137