Former Owner
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kenneth Hyde1
- Kenneth X. Robbins1
- Khiste, B.N1
- Khouri, Elias Alexander1
- King Lawrence Parker1
- Kloster Bredelar1
- Kloster Kuringen1
- Kloster Rebdorf1
- Konrad von Maurer1
- Kulturhistorisches Museum Magdeburg1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Kṛṣṇānanda Āgamavāgīśa Bhaṭṭācārya1
- L. Paganthus1
- Lady Margaret Ayloffe1
- Lajos Graf Apponyi de Nagy-Appony1
- Lambach Abbey1
- Lambertus Eerens1
- Lancino Curti1