Author
- Cosimo I de' Medici, Grand Duke of Tuscany1
- Council of Basel1
- Cristoforo di Guidantonio de Piccolomini1
- Cudamani1
- Cyprián Karásek Lvovický1
- Cyriacus Schnauß1
- Cyriacus, Bishop of al-Bahnasā1
- Cyril of Alexandria1
- Cyril of Jerusalem1
- D. Gomez Davila, Marques de Velada1
- Da'ud Abu al-Fadl1
- Dabbāgh, Muḥammad, active 19th century1
- Daffyd ap Philip1
- Daivajña1
- Daivajña Veṅkaṭeśa1
- Damasio de Frías1
- Damasus I1
- Damāmīnī, Muḥammad ibn Abī Bakr, 1361 or 1362-1424?1
- Daniel Terni1
- Daniel ben Daṿid Ishtrusho1