- Jumʻah1
- Jāmī, 1414-14921
- Jīlī, ʻAbd al-Karīm ibn Ibrāhīm, 1365 or 1366- Insān al-kāmil fī maʻrifat al-awākhir wa-al-awāʼil1
- Kemalpaşazade, 1468 or 1469-1534. Tafsīr al-Fātiḥah1
- Kemalpaşazade, 1468 or 1469-1534. Īḍāḥ al-iṣlāḥ1
- Khiḍr (Legendary character)1
- Khwājahʹzādah, Muṣṭafá ibn Yūsuf, -1487 or 14881
- Kinship (Islamic law)1
- Knowledge, Theory of (Islam)1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Leather doublures1
- Legacies (Islamic law)1
- Love1
- Manuscripts, Medieval1
- Maqṣūrah (Ibn Durayd, Muḥammad ibn al-Ḥasan)1
- Marriage1
- Marriage (Islamic law)1
- Martyrdom--Islam1
- Mas̲navī (Jalāl al-Dīn Rūmī, Maulana)1
- Mathematics1