- Jānakīnātha Bhaṭṭācārya, active 16th century. Nyāyasiddhāntamañjarī2
- Kaffawī, Muḥammad ibn Ḥumayd, -1760 or 1761. Ādāb al-baḥth1
- Kansas--Lawrence1
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)1
- Khamrīyah (Ibn al-Fāriḍ, ʻUmar ibn ʻAlī)1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)2
- Khūjahʹzādah, ʻAbd al-Naṣīr ibn ʻAbd Allāh, active 16th century. Taḥrīrāt ʻalá al-Ṭarīqah al-Muḥammadīyah1
- Knowledge, Theory of4
- Knowledge, Theory of (Islam)1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)5
- Kātī, Ḥusām al-Dīn al-Ḥasan, -1358 or 1359. Qāla aqūl1
- Language and languages--Philosophy9
- Lefèvre d'Étaples, Jacques, -15361
- Legacies (Islamic law)1
- Liquor laws (Islamic law)1
- Literary style1
- Logic✖[remove]310
- Logic, Medieval4
- Malikites3
- Manichaeism1