Encyclopedias, Almanacs, Transcripts, and Maps
- Demospongiae (Demosponges)
- Denominationalism
- Deoxyribose Nucleic Acid
- Deprogramming
- Dermaptera (Earwigs)
- Dermoptera (Colugos)
- Des Prés, Josquin
- Descent into the Underworld
- Design for Disassembly
- Detergents
- Detritivores
- Deus Otiosus
- Devānaṃpiyatissa
- Devils
- Dge Lugs Pa
- Dhammakāya Movement
- Dharma: Buddhist Dharma and Dharmas
- Dharma: Hindu Dharma
- Dharmakīrti
- Dharmapāla