The Roman Catholic Diocese of Lokossa (Latin: Dioecesis Lokossaënsis) is a diocese located in the city of Lokossa in the ecclesiastical province of Cotonou in Benin.

• 11 March 1968: Established as Diocese of Lokossa from the Metropolitan Archdiocese of Cotonou

• Bishops of Lokossa (Roman rite), in reverse chronological order
  • Bishop Coffi Roger Anoumou (since 4 Mar 2023)
  • Bishop Victor Agbanou ( 5 July 2000 - 4 Mar 2023)
  • Bishop Robert Sastre (2 March 1972 – 16 January 2000)
  • Bishop Christophe Adimou (11 March 1968 – 28 June 1971), appointed Archbishop of Cotonou
• Other priest of this diocese who became bishop
  • Paul Kouassivi Vieira, appointed Bishop of Djougou in 1995

• Roman Catholicism in Benin

• GCatholic.org

6°38′N 1°43′E / 6.633°N 1.717°E / 6.633; 1.717