- Nāṣir al-ʻAlawī, al-Ḥasan ibn ʻAlī, 839 or 840-916 or 917. Fiqh al-Nāṣirīyah1
- Nīshāpūrī, Ḥusayn ibn Muḥammad, -1499. Muʻammayāt-i Ḥusaynī1
- Nīshāpūrī, Ḥusayn ibn Muḥammad, -1499. Muʻammāʼ1
- Nīsābūrī, Niẓām al-Dīn al-Ḥasan ibn Muḥammad, -1328 or 1329. Risālah al-Shamsīyah1
- Nīsābūrī, Niẓām al-Dīn al-Ḥasan ibn Muḥammad, -1328 or 1329. Risālah al-Shamsīyah fī al-ḥisāb1
- Nūnīyah1
- Nūr Jahān, Empress, consort of Jahangir, Emperor of Hindustan, -16451
- Nūr al-Dīnʹzādah, Muṣṭafá ibn Aḥmad, -1573 or 1574. Risālat al-miʻrāj1
- Obligations (Law)1
- Obstetrics1
- Occultism--Religious aspects1
- Occultism--Religious aspects--Islam1
- Ocean travel1
- Olive oil1
- Olive oil industry1
- Omens1
- Omens--Religious aspects--Islam1
- Onomastics1
- Optics1
- Ordinatio (Duns Scotus, John)1