Former Owner
- Julie de Busnel1
- Julien Peridier1
- Julius Bisno1
- Julius Heinrich Jeidels1
- Julius Hess1
- Julius de Cardelinis1
- Jérôme Bignon1
- Jón Þorstensson1
- Jāgeśvara1
- Jān Sipār Khān ibn Rustamdilkhān1
- K-L1
- K. B. Starkie1
- Kang Youwei1
- Karbalāʼī Muḥammad Ḥusayn Qāsimʹābādī1
- Karl Anton, Prince of Hohenzollern1
- Karl Leopold Strauven1
- Katherine Petersen1
- Katholieke Universiteit te Leuven Universiteitsbibliotheek1
- Kavīndrācārya, approximately 1600-approximately 16751
- Keifer1