Encyclopedias, Almanacs, Transcripts, and Maps
- Catechism of the Council of Trent
- Catechism, Imperial
- Catechisms
- Catechisms in Colonial Spanish America
- Catechist
- Catechumenate
- Catechumens, House of
- Categories
- Categories of Being
- Catenae, Biblical
- Cathedral and Episcopal Schools
- Catherick, Edmund, Bl.
- Catherine de Médicis
- Catherine de' Ricci, St.
- Catherine II (The Great), Empress of Russia
- Catherine II°
- Catherine of Alexandria, St.
- Catherine of Bologna, St.
- Catherine of Genoa, St.
- Catherine of Racconigi, Bl.