- Controversial literature1
- Coptic Christian saints1
- Coptic manuscripts1
- Corpus commentariorum Averrois in Aristotelem (Averroës)1
- Courts and courtiers1
- Coutinho, Francisco de Sousa, 1597 or 1598-16601
- Credit1
- Criticism, interpretation, etc.1
- Cronica general de España (Ocampo, Florián de)1
- Crypto-Jews1
- Crypto-Jews--Legal status, laws, etc.1
- Cyropaedia (Xenophon)1
- Cyrus, the Great, King of Persia, -530 B.C. or 529 B.C.1
- Darius I, King of Persia, 548 B.C.-485 B.C.1
- De interpretatione (Aristotle)1
- Debts, External1
- Della Rovere, Francesco Maria, duca d'Urbino, 1548-16311
- Descripción de las Indias Occidentales (Herrera y Tordesillas, Antonio de)1
- Despotism1
- Dialogues, Greek1