Former Owner
- Karl Anton, Prince of Hohenzollern1
- Karl Leopold Strauven1
- Karva, Lakṣmaṇabhaṭṭa1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kenneth X. Robbins1
- Khiste, B.N1
- Khouri, Elias Alexander1
- Kloster Kuringen1
- Kloster Rebdorf1
- Konrad von Maurer1
- Kulturhistorisches Museum Magdeburg1
- Kṛṣṇānanda Āgamavāgīśa Bhaṭṭācārya1
- L. Paganthus1
- Lady Margaret Ayloffe1
- Lajos Graf Apponyi de Nagy-Appony1
- Lambach Abbey1
- Lambertus Eerens1
- Lancino Curti1
- Lane Theological Seminary1
- Latham family1