1926.04.11: Established as Apostolic Administration of Leningrad (from Metropolitan Archdiocese of Mohilev)
1991.04.13: Suppressed (to Metropolitan Archdiocese of Minsk–Mohilev and to establish Apostolic Administration of Kazakhstan and Apostolic Administration of Novosibirsk)
Past Ordinaries
Apostolic Administrators of Leningrad (Roman Rite)
Fr. Michel Florent (Clovis François Florent), O.P. (1936 – 1941)