Encyclopedias, Almanacs, Transcripts, and Maps
- Ingenuin, St.
- Ingleby, Francis, Bl.
- Inglis, Charles
- Ingolstadt
- Ingram, John, Bl.
- Ingwiller
- Inheritance (in the Bible)
- Injury, Moral
- Inkeles, Alex
- Inlander, Henry
- Innatism
- Innitzer, Theodor
- Innocent I, Pope, St.
- Innocent II, Pope
- Innocent III, Antipope
- Innocent III, Pope
- Innocent IV, Pope
- Innocent IX, Pope
- Innocent of le Mans, St.
- Innocent V, Pope, Bl.