Former Owner
- J. Paul Getty Museum1
- Jacob Henry Burn1
- Jacob Suter1
- James C. Byrne1
- James Halliwell-Phillipps1
- James Tanis1
- Jan Six VII1
- Jayarāmācārya1
- Jaʻfar ʻAlī1
- Jean E. Austin1
- Jean Jules Olinger1
- Jean P. McClenahan1
- Jean de Carvalho Martins Ferrão de Castelo Branco1
- Jean-Frédéric Waldeck1
- Jezzar Pasha1
- Joachim Windhag1
- Johann David Baier1
- Johann Heinrich von Speyr-Passavant1
- Johannes Wigg1
- Johannes de Helb1