Erected as Diocese of Sá da Bandeira in 1939, following the dismemberment of the Diocese of Nova Lisboa, it was a suffragan of the Archdiocese of Luanda. Its current archbishop is Dom Gabriel Mbilingi, C.S.Sp. Its Cathedral is the São José Cathedral.
Located in the center of Lubango, since its construction it has undergone several transformations, as well as the Bishops Altino Ribeiro de Santana (1955 - 1972), Eurico Dias Nogueira (1972 - 1977) and the Archbishops Alexandre do Nascimento (1977 - 1986) ), Manuel Franklin da Costa (1986 - 1997), Zacarias Kamwenho (1997 - 2009), Gabriel Mbilingi, CSSp. (since 2009).