Author
- Diogenes of Sinope1
- Divākara1
- Divākarabhaṭṭa1
- Diya al-Din al-Maqdisi1
- Djelal Al Din Mohammed Ibn Ahmed Al Mohally1
- Dnyaneshwar1
- Domenico Cavalca5
- Domenico Oliva1
- Domenico Taparelli1
- Domingo de Ara1
- Dominican Order1
- Dominicus de Ragusia1
- Domizio Calderini2
- Donato Acciaioli1
- Dorotheus of Gaza1
- Du You1
- Duchy of Milan1
- Duchy of Parma and Piacenza1
- Dunash ibn Tamim1
- Duns Scotus2