Title
- Nūr al-ʻuyūn fī talkhīṣ siyar al-amīn al-maʼmūn1
- Oculus sacerdotis1
- Office1
- Omnes ad praeda venient1
- Omnis mortalium cura2
- On accounting and commissions1
- On astronomy, geometry, and arithmetic1
- On charms and talismans1
- On interpretation1
- On mnemonics and memory1
- Opuscula1
- Orationes1
- Ordinal1
- Ordinances2
- Ordo judicarius1
- Organon1
- Orthographia1
- Otia imperialia1
- Ottoman texts1
- Panormia1