- Jāmī, 1414-1492. Risālah-i muʻammā1
- Jārabardī, Aḥmad ibn al-Ḥusayn, -1346. Mughnī fī ʻilm al-naḥw1
- Kaʻb al-Aḥbār, -655 or 6561
- Khiḍr (Legendary character)1
- Kings and rulers--Duties1
- Kings and rulers--Genealogy1
- Kings and rulers--Religious aspects1
- Kātī, Ḥusām al-Dīn al-Ḥasan, -1358 or 1359. Qāla aqūl1
- Lamaʻāt (ʻIrāqī, Fakhr al-Dīn Ibrāhīm)1
- Languages, Secret1
- Laylat al-Barāʼah1
- Learning1
- Leather doublures1
- Legacies (Islamic law)1
- Legal documents (Islamic law)1
- Legal petitions1
- Legends1
- Letter writing, Arabic1
- Letter writing, Persian1
- Liquor laws (Islamic law)1