Former Owner
- James H. Stewart1
- James Henthorn Todd1
- James K. Moffitt1
- Jean Bondieu1
- Johan Meerman1
- Johem Spiess1
- John B. Stetson Jr.1
- John Bohn1
- John Edgar Ker1
- John Hindley1
- John Lumley, 1st Baron Lumley1
- John Sidney Hawkins1
- John Topham1
- Joseph Barrois1
- Joseph Mayner1
- Joseph Pulilo1
- José Antonio Conde1
- Lepeletier de Rosanbo1
- Librairie Tross1
- Library of the Dominicans of Paris1