- Netherlands--Overijssel1
- New Spain. Viceroy1
- New moon--Religious aspects1
- Niccolò, Michele di1
- North, Edward North, Baron, 1496?-15641
- Notaries1
- Novitiate1
- Nuqāyah (Suyūṭī)1
- Nuqāyah mukhtaṣar al-Wiqāyah fī masāʼil al-Hidāyah (Maḥbūbī, ʻUbayd Allāh ibn Masʻūd)1
- Nuzhat al-nuẓẓār fī ʻilm al-ghubār (Ibn al-Hāʼim, Aḥmad ibn Muḥammad)1
- Nīsābūrī, Niẓām al-Dīn al-Ḥasan ibn Muḥammad, -1328 or 1329. Risālah al-Shamsīyah1
- Obstetrics1
- Occasional poems1
- Orden de Santiago1
- Order of the Garter1
- Order of the Golden Fleece1
- Orders of knighthood and chivalry1
- Ordinances, Municipal1
- Orta, Garcia de, active 16th century1
- Ospedale degli Innocenti (Florence, Italy)1