Time Line: 1990
- beatification of Blessed Antonio
- beatification of Blessed Cristobal
- beatification of Blessed Joseph Allamano
- beatification of Blessed Juan
- beatification of Blessed Juan Diego
- beatification of Blessed Maria Mercedes Prat
- beatification of Blessed Pier Giorgio Frassati
- beatification of Blessed Philip Rinaldi
- beatification of Saint Augusto Andrés
- beatification of Saint Anicet Adolfo
- beatification of Saint Benjamín Julián
- beatification of Saint Benito de Jesús
- beatification of Saint Cirilo Bertrán
- beatification of Saint Hannibal Mary Di Francia
- beatification of Saint Inocencio de la Immaculada
- beatification of Saint Julián Alfredo
- beatification of Saint Jaime Hilario Barbel
- beatification of Saint Marciano José
- beatification of Saint Tommaso da Cori
- beatification of Saint Victoriano Pío
- canonization of Saint Marguerite d'Youville
- declaration of Blessed Mariano de Jesus Euse Hoyos as Venerable
- declaration of Blessed Colomba Gabriel as Venerable
- elevation of the archdiocese of Kisumu, Kenya
- elevation of the archdiocese of Gatineau-Hull, Québec, Canada
- elevation of the archdiocese of Mombasa, Kenya
- elevation of the archdiocese of Nyeri, Kenya
- elevation of the diocese of Encarnación, Paraguay
- elevation of the diocese of Istmina-Tadó, Colombia
- elevation of the diocese of Lashio, Myanmar
- elevation of the vicariate apostolic of Anatolia, Turkey
- elevation of the vicariate apostolic of Ingwavuma, South Africa
- founding of the diocese of Aba, Nigeria
- founding of the diocese of Chimoio, Mozambique
- founding of the diocese of Colatina, Espirito Santo, Brazil
- founding of the diocese of Ndalatando, Angola
- founding of the diocese of Nsukka, Nigeria
- founding of the diocese of Quibdó, Colombia
- founding of the diocese of Rajshahi, Bangladesh
- founding of the Maronite eparchy of San Charbel en Buenos Aires, Argentina
- founding of the Melkite apostolic exarchate of Venezuela
