- Italy--Verona4
- Italy--Vicenza8
- Italy--Vicopisano1
- Italy--Villanova Monteleone1
- Italy--Volterra2
- Izmīrī, Muṣṭafá ibn Rajab, active 17th century1
- Iʻrāb ʻan qawāʻid al-iʻrāb (Ibn Hishām, ʻAbd Allāh ibn Yūsuf)3
- Iḥyāʼ ʻulūm al-dīn (Ghazzālī)2
- Iṣbāḥ1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār4
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tasdīd al-qawāʼid fī sharḥ Tajrīd al-ʻaqāʼid2
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid1
- Iẓhār al-asrār (Birgivî Mehmet Efendi)6
- Jacopo, Bernardo di1
- Jacopo, Giovanni di1
- Jagadīśatarkālaṅkara. Vyādhikaraṇa1
- Jagadīśatarkālaṅkāra. Jāgadīśī3
- Jaghmīnī, Maḥmūd ibn Muḥammad, -1221?1
- Jaina cosmology1
- Jaina hymns, Prakrit1