Renamed on 28 April 1905 as Apostolic Vicariate of Northern Kansu, having lost territory to establish the then Apostolic Vicariate of Southern Kansu (甘肅南境)
March 8, 1922: Renamed as Apostolic Vicariate of Western Kansu, having (re)gained territory from its above daughter Apostolic Vicariate of Southern Kansu (甘肅南境)
3 December 1924: Renamed as Apostolic Vicariate of Lanchowfu
Hubertus Otto, C.I.C.M. (born Belgium) (June 20, 1890–retired 1918), Titular Bishop of Assuras (1890.06.20–death 1938.02.25)
Godfried Frederix, C.I.C.M. (费达德) (born The Netherlands) (March 5, 1920–March 14, 1922), Titular Bishop of Thagaste (1920.03.08–1938.06.18), next Apostolic Vicar of Ningxia (寧夏) (China) (1922.03.14–retired 1930.03.21), died 1938
Apostolic Vicar of Western Kansu (甘肅西境)
Theodor Buddenbrock, S.V.D. (born Germany) (November 25, 1924–3 December 1924 see below), Titular Bishop of Issus (1924.11.25–1946.04.11)
Apostolic Vicar of Lanchowfu (蘭州府)
Theodor Buddenbrock, S.V.D. (see above 3 December 1924–April 11, 1946 see below)
Metropolitan Archbishops of Lanzhou (蘭州)
Theodor Buddenbrock, S.V.D. (see above April 11, 1946–death January 18, 1959)
Philip Yang Libo (first native incumbent) (1981–death 15 February 1998)–clandestine consecration 1981
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