- More, Thomas, Saint, 1478-15353
- Mukhtār lil-fatwá (Mawṣilī, ʻAbd Allāh ibn Maḥmūd)3
- Mysticism3
- Nahuatl language--Writing3
- Naples (Kingdom)3
- Navarre (Kingdom)3
- Nawawī, 1233-1277. Rawḍat al-ṭālibīn3
- Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar (Ibn Ḥajar al-ʻAsqalānī, Aḥmad ibn ʻAlī)3
- Oaths3
- Orden de Santiago3
- Orthodox Eastern Church3
- Paul III, Pope, 1468-15493
- Personal correspondence3
- Philosophy, Indic3
- Piccolomini della Triana, Silvio, 1878-19623
- Piccolomini, Ascanio Francesco3
- Pictorial maps3
- Poets, Persian3
- Poor Clares3
- Popes--Election3