- Contemplation1
- Corpus juris civilis1
- Creeds1
- Criminal law1
- Criticism and interpretation1
- Criticism, Textual1
- Cults1
- Customs administration1
- Davanzati, Francesco1
- De finibus bonorum et malorum (Cicero, Marcus Tullius)1
- Death and burial of a person1
- Death--Religious aspects--Catholic Church1
- Della Rovere, Francesco Maria, duca d'Urbino, 1548-16311
- Detti, Giovanni Baptista1
- Diagnosis1
- Dionysius, the Areopagite, Saint, active 1st century1
- Directories1
- Diseases1
- Dominical letters1
- Drama1