- De mundo (Aristotle)1
- De partibus animalium (Aristotle)1
- Death registers1
- Death--Religious aspects--Islam1
- Deccani painting1
- Devotional calendars--Coptic Church1
- Devotional exercises1
- Devotional literature, French1
- Devotional literature, German1
- Di Leone, Francesco1
- Di Leone, Giovanni1
- Didactic poetry, Latin (Medieval and modern)1
- Diocletian, Emperor of Rome, 245-3131
- Dionysius, the Areopagite, Saint, active 1st century1
- Diplomatic and consular service, Venetian1
- Dissenters, Religious1
- Divination1
- Divination--Religious aspects--Islam1
- Divine Office (Music)1
- Domitian, Emperor of Rome, 51-961