Author
- Jonathan Eybeschutz1
- Jordan von Quedlinburg1
- Joseph Haslewood1
- José Pellicer1
- Juan Gallo1
- Juan Martínez Silíceo1
- Juan Vicente de Güemes, 2nd Count of Revillagigedo1
- Juan de Foxá1
- Juan de Mongaston1
- Kamal al-Din ibn al-Humam1
- Kamāl al-Dīn Turkumānī1
- Khaqani1
- Kingdom of France1
- Laurence Johnson1
- Laʻlî Meḥmed Fenâî1
- Leo I1
- Leon Battista Alberti1
- Lorenzino de' Medici1
- Lorenzo Valla1
- Lorenzo de Padilla1