Former Owner
- John Wallop, Viscount Lymington1
- John Ward, 1st Earl of Dudley1
- Joost Ritman1
- Jorge de Ataíde1
- Joseph Barrois8
- Joseph Neeld1
- José Fernando Ramírez2
- Juan Burgueño1
- Juan de Gayferos de Eguiraum1
- Juan de Iriarte y Cisneros1
- Judith Lady Montefiore College1
- Julia Burgess1
- Julian Burgueño1
- Kaikhusroo Minocher Jamaspasa2
- Karen L. Gould1
- Karva, Lakṣmaṇabhaṭṭa1
- Katharinenkirche, Nuremberg1
- Katherine Petersen1
- Katherine Somerset Wyttenbach Fenwick1
- Kavīndrācārya, approximately 1600-approximately 16751