Author
- Magister Contarinus1
- Marbodius of Rennes1
- Monastery of San Andrés de Fanlo1
- Muhammad ibn Ja'far al-Khara'iti1
- Muscio1
- Muslim ibn al-Ḥajjāj1
- Muḥammad ibn Mūsá Ḥāzimī1
- Muḥammad ibn ʻUzayr Sijistānī1
- Odo of Meung1
- Origen1
- Osbern of Gloucester1
- Papias1
- Philip the Chancellor1
- Piccolomini1
- Piccolomo Oltremonti1
- Pietro Parenzi1
- Podestà of Monticchiello (Italy)1
- Prosper of Aquitaine1
- Pseudo-Hippocrates1
- Ptolemy1