- Despotism1
- Devices (Heraldry)1
- Devil1
- Devotion to the Blessed Virgin Mary1
- Devotional calendars1
- Devotional calendars--Catholic Church1
- Devotional exercises1
- Devotional literature, French1
- Devotional literature, German1
- Di Leone, Francesco1
- Di Leone, Giovanni1
- Diagnosis1
- Dialogi (Gregory I, Pope)1
- Diarrhea1
- Dictators as authors1
- Didactic literature, English (Middle)1
- Didactic literature, Latin (Medieval and modern)1
- Didactic poetry, Arabic1
- Didactic poetry, Latin (Medieval and modern)1
- Diocletian, Emperor of Rome, 245-3131