- Devotion to the Blessed Virgin Mary1
- Devotional literature, English (Middle)1
- Devotional poetry, Arabic1
- Dhimmis (Islamic law)1
- Dialogues, Spanish1
- Diaries1
- Didactic literature, English (Middle)1
- Diet1
- Diggele, Robert, active 1364-13741
- Dion, approximately 408 B.C.-354 B.C.1
- Dionysius, the Areopagite, Saint, active 1st century1
- Diplomatic documents1
- Discipline1
- Discoveries in geography1
- Dispensations1
- Dissertations, Academic1
- Divine office1
- Dominicans--Prayers and devotions--Early works to 18001
- Dominikanerinnenkloster Heilig Kreuz Regensburg1
- Double bands1