Former Owner
- Khiste, B.N1
- Khouri, Elias Alexander1
- King Lawrence Parker1
- Kloster Bredelar1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Kṛṣṇānanda Āgamavāgīśa Bhaṭṭācārya1
- L. Paganthus1
- Lambach Abbey1
- Lancino Curti1
- Laura Hurd Motion1
- Leo Olschki1
- Leo S. Olschki Editore1
- Leonardus Martinotius1
- Leonhardus Cuntius1
- Leopold Gruber1
- Levi, David, active 19th century1
- Librairie Tross1
- Lionardo di Paolo Adimari1
- Lohanī, Viṣṇudatta1