Author
- Juan Baptista de Gatica1
- Juan Félix de Rújula1
- Juan Ortiz Campoy1
- Juan Perez Barahona1
- Juan Vicente de Güemes, 2nd Count of Revillagigedo1
- Juan de Foxá1
- Juan de Zumárraga1
- Karaçelebizade Abdülaziz1
- Khalīl ibn Shāhīn1
- Khālid ibn ʻAbd Allāh al-Azharī1
- Kingdom of Naples1
- Kulaynī, Muḥammad ibn Yaʻqūb, -941?1
- Köstendilli Süleymân Şeyhi1
- Leo X1
- Leonardo Bruni1
- Levi, Yosef, 18th century1
- Lope de Vega1
- Lorenzo Gondi1
- Lorenzo Priuli1
- Lorenzo de' Medici1