- Jāmiʻ al-ṣaḥīḥ (Bukhārī, Muḥammad ibn Ismāʻīl)1
- Jāmī, 1414-14921
- Kalbī, Diḥyah ibn Khalīfah, -approximately 6701
- Kamāl al-Dīn Muḥammad ibn Muḥammad, -1418. Naẓm Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar1
- Kansas--Lawrence2
- Karmī, Marʻī ibn Yūsuf, -1623 or 16241
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)1
- Kemalpaşazade, 1468 or 1469-1534. Risālah fī al-haykal al-insānī1
- Khadījah, -approximately 6191
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Khiḍr (Legendary character)1
- Kings and rulers26
- Kinot1
- Kyi︠e︡vo-Pechersʹka lavra1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Ladino literature1
- Ladino poetry1
- Language and languages--Philosophy1
- Latin poetry1
- Laylat al-Qadr1