- Drugs--Religious aspects--Hinduism1
- Drycthelm, monk of Northumbria, active 7th century1
- Dulaert, Johannes1
- Dunhuang manuscripts1
- Dunquzī, ʻAbd Allāh, active 17th century. Bināʼ al-afʻāl1
- Dupin, Jean, 1302-13721
- Duran, Profiat, approximately 1350-approximately 14151
- Durandus, of Saint-Pourçain, Bishop of Meaux, approximately 1275-13341
- Dutch poetry1
- Duʻāʼ al-qunūt1
- Duʻāʼ al-taḥīyāt1
- Dvaita (Vedanta)1
- Dyes and dyeing1
- Dāghistānī, Aḥmad ibn Muḥammad. Mukhtaṣar1
- Dārā Shikūh, Prince, son of Shahjahan, Emperor of India, 1615-16591
- Dīkṣā1
- Dīvān (Ḥāfiẓ)1
- Early rising1
- Earthquakes--Religious aspects--Hinduism1
- Eastern churches--Liturgy1