Former Owner
- Khouri, Elias Alexander1
- King Lawrence Parker1
- Kloster Bredelar1
- Kloster Rebdorf1
- Kāle, Gālambhaṭṭa1
- Kāle, Janārdana1
- Lady Frances Bentinck1
- Lajos Graf Apponyi de Nagy-Appony1
- Lancino Curti1
- Lane Theological Seminary1
- Lathrop C. Harper, Inc.1
- Lathrop Colgate Harper1
- Laurence Kirby1
- Laurence William Hodson1
- Laurentius van der Torqel1
- Law Society1
- Leigh Baker1
- Leonard Baskin1
- Leonard Grey, 1st Viscount Grane1
- Leonardo Loredan1