Former Owner
- J. Meade Falkner1
- Jacopo Ripanda1
- Jacques Auguste de Thou1
- Jacques Rosenthal2
- James & Mary Lee Tregaskis (Firm)1
- James F. Drake1
- James Halliwell-Phillipps1
- James K. Moffitt1
- James Ley, 1st Earl of Marlborough1
- James Lyell1
- James Rathwell Page1
- James Rimell & Son1
- James Stevens-Cox1
- Jan Six VII1
- Jean-Jacques Charron1
- Jeremy C. Jackson1
- Joachim Guerrinus de Montefegatesio1
- Joannes Aloysius Brochman1
- Joannes Hainricus Ebron zu Wildenberg1
- Johan Meerman2