Title
- Omnium gentium mores, leges, et ritus1
- On Questions in Aristotle’s Nicomachean Ethics1
- On accounting and commissions1
- On charms and talismans1
- On generation and corruption2
- On mnemonics and memory1
- On the Anger of God1
- On the calibration of sundials1
- On virtue1
- Ontology text2
- Ophthalmology text1
- Opuscula4
- Opusculum de formandis epistolis1
- Opusculum de multiplici ludo1
- Oratio ad immortalitatem illustriassimae nec non famigerratissimae laudis1
- Orationes in Laurentium Vallam1
- Orations2
- Ordinal2
- Ordinances4
- Ordo judicarius1