Parentless Concepts
- Christophorus Crinesius, Disputatio de confusione linguarum
- Chronica a mundi initia
- Chronica de rebus gestis Persarum, Tatarorum, familiae Osmanidarum vel Calipharum qui ante Osmanidas imperium
- Chronica Reichersbergensis
- Chronicon Teimur Langhi, et Tatarorum
- Chrysostomus, Johannes
- Ciampoli, Giovanni
- Cicero, Epistolae ad familiars
- Cinqarbres, Jean
- Clavius, Christophorus
- Clement of Alexandria
- Clessalius
- Climacus, Johannes
- Clusius, Carolus
- Clüver, Philipp
- Coccius, Jodocus
- Cocz, Peter
- Codex Arabicus bibliothecae Palatinae continens Epistolas S. Pauli Catholicas et Acta Apostolorum
- Colerus, Christophorus
- Colerus, Matthias
- collection
- Collenuccio, Pandolfo
- Colloquium inter Turcam et Christianum
- collotype
- Cologne