Former Owner
- Lane Theological Seminary1
- Latham family1
- Lathrop C. Harper, Inc.7
- Laura Hurd Motion1
- Laurence Claiborne Witten II3
- Laurence Hilliard1
- Laurence Vaux1
- Laurence William Hodson2
- Laurent Campagne1
- Laurentius van der Torqel1
- Law Society1
- Lawrence J. Schoenberg87
- LeMare1
- Legoué1
- Leicester Harmsworth6
- Leo Olschki7
- Leo S. Olschki Editore10
- Leonard Baskin1
- Leonard Grey, 1st Viscount Grane1
- Leonardo Lapiccirella2