Former Owner
- Johann Heinrich van Ess1
- Johannes Baptista Siccus1
- John Bolton1
- John D. Stanitz1
- John Frederick Lewis38
- John Harvey Treat1
- John James Lewis1
- John Thomas Beer1
- Joost Ritman6
- Joseph Anton Koch1
- Joseph Barrois2
- Joseph Henry Allen1
- Joseph Levitsky1
- Jāgeśvara1
- Jān Sipār Khān ibn Rustamdilkhān1
- Karbalāʼī Muḥammad Ḥusayn Qāsimʹābādī1
- Karva, Lakṣmaṇabhaṭṭa2
- Kavīndrācārya, approximately 1600-approximately 16751
- Kenneth X. Robbins1
- Khammāsh, Aḥmad1