Former Owner
- J. Martini1
- J. Meade Falkner1
- J. Paul Getty Museum1
- Jacob Henry Burn1
- James C. Byrne1
- James Halliwell-Phillipps1
- James K. Moffitt1
- James Tanis1
- James Tregaskis1
- Jan Six VII1
- Jayarāmācārya1
- Jaʻfar ʻAlī1
- Jean E. Austin1
- Jean Jules Olinger1
- Jean de Carvalho Martins Ferrão de Castelo Branco1
- Jean-Frédéric Waldeck1
- Jivanji Jamshedji Modi1
- Jo. Otho1
- Joachim Windhag1
- Joannes Salzperg1