Former Owner
- John Bohn1
- John Church1
- John Fletcher Hurst1
- John Jarsey1
- John Lee1
- Joseph Barrois1
- Julius de Cardelinis1
- Jāgeśvara1
- Kenneth X. Robbins1
- Khiste, B.N1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Laurence William Hodson1
- Leicester Harmsworth1
- Leonard S. Unger1
- Leonardus Martinotius1
- Lionel Tollemache, 4th Earl of Dysart1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- London School of Jewish Studies1
- Luigi Celotti1