Former Owner
- John Lee1
- John Thomas Beer1
- Joseph Barrois1
- Juan Burgueño1
- Judith Lady Montefiore College6
- Julia Burgess12
- Julian Burgueño1
- Julius de Cardelinis1
- Kaikhusroo Minocher Jamaspasa2
- Karva, Lakṣmaṇabhaṭṭa2
- Kenneth X. Robbins1
- King Lawrence Parker1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Lancino Curti1
- Laurence William Hodson1
- Lawrence J. Schoenberg36
- Leicester Harmsworth2
- Leo Olschki2
- Leopold Gruber1