- Christian poetry, Latin (Medieval and modern)1
- Christianity3
- Chronology1
- Church calendar1
- Church history3
- Church year sermons1
- Churches1
- Ciphers1
- Civil law1
- Classical education2
- Classical literature14
- Classical poetry1
- Commentaries1
- Commonplace-books2
- Composers2
- Composition and exercises1
- Concordances1
- Conduct of life2
- Confession4
- Consolation6
Libraries & Collections
- Arts Library
- Bass Library
- Beinecke Library
- Classics Library
- Divinity Library
- Film Study Center
- Fortunoff Archive
- Humanities Collections
- International Collections
- Law Library
- Lewis Walpole Library
- Library Collection Services
- Manuscripts & Archives
- Map Collection
- Marx Science & Social Science Library
- Medical Library
- Music Library
- Sterling Library
- Yale Center for British Art
