Author
- Justin1
- Justinian I1
- Jörg Muelich1
- Kamal Khujandi1
- Kamal al-Din ibn al-Humam1
- Khayr al-Dīn Khalīl1
- Khālid ibn ʻAbd Allāh al-Azharī1
- Kingdom of England1
- Lambert le Bègue1
- Laurentius Cynthius1
- Leo Archpriest1
- Leonardo Mainardi1
- Leopold Camp1
- Liang Qian1
- Liu Song1
- Lope de Olmedo1
- Lopez family (Toledo, Spain)1
- Lorenzo Bonincontri1
- Luca Pacioli1
- Lucian of Samosata1