- Cicero, Marcus Tullius1
- Clough, William?1
- Cocker, Edward, 1631-1675, author, engraver1
- Coelson, Lancelot, 1627-approximately 16871
- Coley, Henry, 1633-17041
- Coley, Henry, 1633-1704, author1
- Colman, Morgan1
- Conrad, of Saxony1
- Conradinus de Pontremulo1
- Conradus, de Brundelsheim, -13211
- Constantine, the African, approximately 1020-10871
- Coronelli, Vincenzo, 1650-1718, cartographer1
- Corti, Matteo, 1475-15421
- Cotrugli, Benedetto, -1468, creator1
- Cromer, Walter, d. 15461
- Cuenot, François, ca. 1610-16871
- Dal Pino, Antonio di Francesco1
- Dale, Robert, -17221
- Damīrī, Muḥammad ibn Mūsá, 1341?-14051
- Danforth, Samuel, 1626-1674, author1
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