- Didactic literature, German1
- Didactic literature, Latin1
- Didactic literature, Latin (Medieval and modern)2
- Didactic poetry, Arabic2
- Didactic poetry, English (Middle)4
- Didactic poetry, Latin4
- Didactic poetry, Latin (Medieval and modern)1
- Diet1
- Digesta1
- Diggele, Robert, active 1364-13741
- Digital images112
- Dimashqī, ʻAbd al-Laṭīf ibn Aḥmad. Nukhbat al-tuffāḥah ḥāwiyat qawāʻid al-misāḥah1
- Dimyātī, Nūr al-Dīn. Qasam al-athná al-mabtahil bi-al-asmāʾ al-ḥusná1
- Dini, Francesco1
- Dioceses2
- Diocletian, Emperor of Rome, 245-3131
- Dion, approximately 408 B.C.-354 B.C.1
- Dionysius, the Areopagite, Saint, active 1st century2
- Diplomacy1
- Diplomatic and consular service, Venetian1