Former Owner
- K. B. Starkie1
- Kang Youwei1
- Karbalāʼī Muḥammad Ḥusayn Qāsimʹābādī1
- Karl Anton, Prince of Hohenzollern1
- Karl Leopold Strauven1
- Kartause Erfurt1
- Katheline Minnis1
- Katherine Petersen1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kavīndrācārya, ca. 1600-ca. 16751
- Keifer1
- Kenneth X. Robbins1
- Kherḍe, Gaṇeśa Bhaṭṭa1
- Kherḍe, Kṛṣṇa Bhaṭṭa1
- Khiste, B.N1
- Khouri, Elias Alexander1
- King Lawrence Parker1
- Klaus Dieter Dahmen1
- Kloster Bredelar1
- Kloster Kuringen1