Author
- Jalaluddin al-Mahalli1
- Jean de Bernuy1
- Jerónimo Román y Zamora1
- Joan Martines1
- Johann Neudörffer the Elder1
- Johannes Schöner1
- John Crosse1
- John Harington1
- John Montgomery1
- Josef ibn Tabul1
- Joseph Nasi1
- Joseph ben Abraham Gikatilla1
- Judah Hadassi1
- Khayr Allāh ibn Khayr al-Dīn1
- Khwājakīzādah, Muṣṭafá ibn Muḥammad, d. 15901
- Khālid ibn ʻAbd Allāh al-Azharī1
- Kollegium Sankt Nikolaus1
- Kınalızâde Hasan Çelebi1
- Leo III1
- Leonardo Loredan1