Encyclopedias, Almanacs, Transcripts, and Maps
- Diogo Cão and the Portuguese in West Africa
- Diogo Gomes
- Diogo Lopes de Sequeira
- Dionysius and Pietro Domenico
- Dionysodorus
- Diplurans: Diplura
- Dippers: Cinclidae
- Dirac, Paul
- Dirck Hartog
- Direct Democracy
- Direct Drawing and Painting
- Direct Variation
- Direct Variation
- Direct Writing
- Dirk Brouwer
- Disability: I. Ethical and Societal Perspectives
- Disability: II. Legal Issues
- Disappearances (Paranormal)
- Disappeared Children of Argentina
- Disc Herniation