The Roman Catholic Diocese of Ganda () is a diocese located in the city of Ganda in the ecclesiastical province of Huambo in Angola. The current bishop of the diocese is Estêvão Binga.
The diocese was established on 1 August 2024 as Diocese of Ganda from the Diocese of Benguela. It is a suffragan of the Archdiocese of Huambo.
The diocese covers parts of Benguela Province, including Chongoroi, Caimbambo, Cubal, Ganda, and Tchindjendje. It covers has an area of .
The temporary diocesan cathedral is the Cathedral of Saint John the Baptist (Ganda Angola).