Title
- Novels1
- Nuzhat al-Qulub2
- Nuzʹhat al-khāṭir fī shiʻr sayyidī ʻAbd al-Qādir1
- Oberbayerisches Landrecht1
- Octoechos1
- Oculus sacerdotis1
- Old Testament2
- On being and essence1
- On generation and corruption1
- On the eternity of the world1
- Orationes1
- Order1
- Ordinal3
- Ordinances1
- Ordo judicarius1
- Ordo judiciorum1
- Orthographical text4
- Papal bull2
- Paschale carmen1
- Passion of Saint Cecilia1