Coba jelasin Domenico Serafini, OSB (1916) dari Kongregasi untuk Tarekat Hidup Bakti dan Serikat Hidup Apostolik dong

Raffaele Scapinelli di Léguigno (1918–1920)

Teodoro Valfre di Bonzo (1920–1922)

Arturo Tabera Araoz, CMF (1973–1975)

Eduardo Francisco Pironio (pro-prefek 1975–1976, prefek 1976–1984)

Jean Jérôme Hamer, OP (pro-prefek 1984–1985, prefek 1985–1992)

João Bráz de Aviz (2011–kini)

Arcadio Larraona Saralegui, CMF (1950–1959)

Edward Louis Heston, CSC (1969–1971)

Paul Augustin Mayer, OSB (1971–1984)

Francisco Javier Errázuriz Ossa, P.Schönstatt (1990–1996)

Gianfranco Gardin, OFM Conv. (2006–2009)

Joseph William Tobin, C.SS.R. (2010–2012)

José Rodríguez Carballo, O.F.M. (sejak 2013)