Former Owner
- Josiah H. Benton1
- Jules Bonhomme1
- Julie de Busnel1
- Julius Hess1
- Justin MacCarthy Reagh1
- K-L1
- Karl F. Morrison1
- Katharinenkirche, Nuremberg1
- Keifer1
- Kenneth Hyde1
- Kloster Rebdorf1
- Kulturhistorisches Museum Magdeburg1
- Lady Margaret Ayloffe1
- Lajos Graf Apponyi de Nagy-Appony1
- Lambertus Eerens1
- Latham family1
- Laurence Kirby1
- Laurentius van der Torqel1
- Law Society1
- Lehn of Denmark1