Title
- Commentary on Porphyry1
- Commentary on Psalms1
- Commentary on the Ephemerides1
- Commission1
- Commonplace book1
- Compendio delle istorie di Pisa1
- Compendium iuris canonici1
- Compendium of biblical topics1
- Compendium religiosi vivendi1
- Confessional1
- Confutatio libelli Philippi Melanchtonis cuius titulus est De officio principum1
- Coniecturarum liber1
- Consolation of Philosophy1
- Contra impedimiam1
- Copia schedula1
- Corpus Juris Civilis1
- Correspondence1
- De Merles1
- De accidentibus animae rationalis1
- De bello suscipiendo adversus venetianos1