- Dati, Jacopo1
- Dati, Niccolò, 1458-1500 or 15011
- Davanzati, Niccolò1
- Dawwānī, Muḥammad ibn Asʻad, 1426 or 1427-1512 or 1513. Risālah qadīmah li-ithbāt al-wājib1
- De caelo (Aristotle)1
- De finibus bonorum et malorum (Cicero, Marcus Tullius)1
- De generatione et corruptione (Aristotle)1
- De mundo (Aristotle)1
- Dead--Religious aspects--Islam1
- Death--Religious aspects--Catholic Church1
- Decedents' estates1
- Deeds1
- Del Torto, Andrea1
- Delci, Aldobrando1
- Delci, Niccolò1
- Della Casa, Filippo1
- Della Rovere, Giorgio1
- Detrini, Bartolomeo1
- Devotion to the Blessed Virgin Mary1
- Devotional literature, French1