- Kāshī, Yaḥyá ibn Aḥmad. Qarah ḥāshiyah1
- Kātī, Ḥusām al-Dīn al-Ḥasan, -1358 or 1359. Qāla aqūl1
- Languages, Secret1
- Laqānī, Muḥammad ibn Ḥasan, 1468 or 1469-1550. Ḥāshiyat Taṣrīf al-ʻIzzī1
- Latin language--Grammar1
- Laughter--Religious aspects--Islam1
- Laylat al-Barāʼah1
- Learning1
- Lebanon--Baʻlabakk1
- Legal forms1
- Legal instruments1
- Libel and slander--Religious aspects--Islam1
- Libya--Tripoli1
- Local officials and employees--Salaries, etc.1
- Longevity--Religious aspects--Islam1
- Love poetry, English (Middle)1
- Lubāb al-iʻrāb al-māniʻ min al-laḥn fī al-sunnah wa-al-Kitāb (Shaʻrānī, ʻAbd al-Wahhāb ibn Aḥmad)1
- Lunar eclipses1
- Madrasah al-ʻUmarīyah (Damascus, Syria)1
- Madrasah al-Ṭūlūnīyah (Jerusalem)1