Title
- Nāsikh wa-al-mansūkh fī al-ḥadīth1
- Obituaries1
- Old Testament4
- On Catholic faith1
- On buying and selling1
- Opuscula1
- Ordinances1
- Ordo judicarius1
- Organon1
- Otia imperialia1
- Panegyric1
- Panormia1
- Pantheon1
- Papal bull2
- Partial Chronicon pontificum et imperatorum with continuations and list of bishoprics1
- Passio sancti Blasii1
- Pastoral texts1
- Pauline Epistles1
- Penitential text1
- Penitential theory1