- Dionysius, the Areopagite, Saint, active 1st century1
- Diplomacy1
- Diplomatic and consular service, Venetian1
- Diplomatic relations1
- Diplomats1
- Directories1
- Discoveries in geography--French1
- Dispute resolution (Law)1
- Dissenters, Religious1
- Dissertations, Academic1
- Divination--Religious aspects--Islam1
- Divine office1
- Divine right of kings1
- Dominical letters1
- Domitian, Emperor of Rome, 51-961
- Doti, Domenico1
- Doublures1
- Drake, Francis, approximately 1540-15961
- Dream interpretation1
- Drug abuse--Religious aspects--Islam1