Former Owner
- King Lawrence Parker1
- Kloster Bredelar1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Laurence Harman King-Harman1
- Leo S. Olschki Editore1
- Leonhardus Cuntius1
- Levi, David, active 19th century1
- London School of Jewish Studies1
- Louis Lamm1
- Ludovic Damas Froissart1
- Ludovico Settala1
- Luigi Celotti1
- Luis Escobet1
- Luis Fernández de Córdoba y Aragón1
- Lundell Library1
- Lālajī Śarmaṇ1
- Madyan Qusuni1
- Mahdī ibn Muṣṭafá al-Ḥusaynī1
- Manookjee Sorabjee Ashburner1