- Khuwarizmī, Jamāl al-Dīn Abu Bakr1
- Khuwānsārī, Muḥammad ibn Ḥusayn, d. 17131
- Khvājah Muḥammad Pārsā3
- Khwaja Abdullah Ansari2
- Khwaja Mir Dard1
- Khwājakīzādah, Muṣṭafá ibn Muḥammad, d. 15901
- Khādimī, ʻAbd Allāh ibn Muḥammad, d. 17781
- Khālid ibn ʻAbd Allāh al-Azharī9
- Khāṭirī, Aḥmad ibn Muḥammad1
- Kimhi Yitzhak ben Mordekhai1
- Kindī, ʻAmr ibn al-ʻĀṣ1
- Kingdom of Bohemia1
- Kingdom of Castile1
- Kingdom of England3
- Kingdom of France2
- Kingdom of Naples1
- Kirmānī, Muḥammad ibn ʻAlī1
- Kisei Yamamoto1
- Kiśorīdāsa1
- Klaus von Stille1