Former Owner
- John Camp Williams1
- John Church1
- John Edgar Ker1
- John Fenn1
- John Hinely1
- John Lee1
- John Leeche1
- John Roland Abbey1
- John Ruskin1
- John Sotheby1
- John Thomas Beer1
- John Ward, 1st Earl of Dudley1
- John William Harshberger1
- Juan Burgueño1
- Julian Burgueño1
- Julius de Cardelinis1
- Jérôme Pichon1
- Jāgeśvara1
- Kavīndrācārya, ca. 1600-ca. 16751
- Kenneth X. Robbins1