The Catholic Encyclopedia I St. Ibar Ibarra Ibagué Ibas Pierre Le Moyne, Sieur d'Iberville Ibora Iceland Symbolism of the Fish Iconoclasm Christian Iconography Iconium Iconostasis Idaho Hydatius of Lemica Idea Idealism Association of Ideas Communicatio Idiomatum Idiota Idolatry Idumea Diocese of Iglesias José Iglesias de la Casa Bl. Ignacio de Azevedo St. Ignatius Loyola St. Ignatius of Antioch St. Ignatius of Constantinople Blessed Peter Igneus Ignorance IHS St. Ildephonsus Illegitimacy Illinois Illinois Indians St. Illtyd Illuminated Manuscripts Illuminati Illuminati State or Way (Purgative, Illuminative, Unitive) Illyria Veneration of Images Imagination Carlo Giuseppe Imbonati Maximus von Imhof Imitation of Christ Immaculate Conception Congregation of the Immaculate Conception Immanence Emmanuel Immortality Immunity Imola Innocenzo di Pietro Francucci da Imola Impanation Canonical Impediments Categorical Imperative Attrition Imposition of Hands Impostors Improperia In Commendam Civil Incorporation of Church Property In Partibus Infidelium In Petto Incardination and Excardination Sisters of Charity of the Incarnate Word Order of the Incarnate Word and Blessed Sacrament The Incarnation Incense Incest Elizabeth Inchbald In Cœna Domini Index of Prohibited Books India Indiana Indianapolis Bureau of Catholic Indian Missions American Indians Patriarchate of the East Indies Religious Indifferentism Individualism Individual, Individuality Indo-China Induction Indulgences Apostolic Indulgences Pontifical Indult St. Ine Infallibility Infamy Infanticide Stefano Infessura Infidels Infinity Infralapsarians Jan Ingen-Housz Giovanni Inghirami Venerable Francis Ingleby University of Ingolstadt Venerable John Ingram Jean-Auguste Dominique Ingres Ingulf Richard of Ingworth Injustice Pope Innocent I Pope Innocent II Pope Innocent III Pope Innocent IV Pope Bl. Innocent V Pope Innocent VI Pope Innocent VII Pope Innocent VIII Pope Innocent IX Pope Innocent X Pope Innocent XI Pope Innocent XII Pope Innocent XIII Innsbruck University Inquisition Canonical Inquisition Asylums and Care for the Insane Insanity Early Christian Inscriptions Inspiration of the Bible Installation Instinct Institute of Mary Institute of Mission Helpers of the Sacred Heart Irish Institute of the Blessed Virgin Mary Institute of the Brothers of the Christian Schools Roman Historical Institutes Canonical Institution Intellect Intendencia Oriental y Llanos de San Martín Intention Intercession (Mediation) Episcopal Intercession Interdict Psychology of Interest Interest Interims Internuncio Biblical Introduction Introit Intrusion Intuition Inventory of Church Property Canonical Investiture Conflict of Investitures The Spanish Armada Invitatorium School of Iona Ionian Islands Ionian School of Philosophy Ionopolis Iowa Arnold Ipolyi Blessed Ippolito Galantini Ipsus Ireland Ven. William Ireland St. Irenaeus Sister Irene Irenopolis Ignacio de Iriarte The Irish (in countries other than Ireland) Irish College, in Rome Irish Colleges, on the Continent Irish Confessors and Martyrs Irish Literature Irnerius Iroquois Irregularity Irremovability Irvingites Isaac St. Isaac Jogues Isaac of Armenia Isaac of Nineveh Isaac of Seleucia Isabella I St. Isabel of France Isaias Isaura Ischia Isernia and Venafro Ismael St. Isidore of Pelusium St. Isidore of Seville Isidore of Thessalonica St. Isidore the Labourer Isionda José Francisco de Isla Islam (Concept) Mohammed and Mohammedanism Isleta Pueblo Simon Islip Ispahan Israelites Issachar Issus St. Ita Italian Literature Italians in the United States Italo-Greeks Italy Ite Missa Est Itineraria Itinerarium Franz Ittenbach St. Ives Levi Silliman Ives St. Ivo of Chartres Ivory Diocese of Ivrea Fernando de Alba Ixtlilxochitl