Former Owner
- Lambach Abbey1
- Lancino Curti1
- Laurence William Hodson1
- Leigh Baker1
- Leonardo Bruni1
- Leonhardus Cuntius1
- Leopold Gruber1
- Lionardo di Paolo Adimari1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Lorenzo Berdute1
- Louis César de La Baume Le Blanc1
- Louis Hercule Timoléon de Cossé-Brissac1
- Louis-Jean-Nicolas Monmerqué1
- Lucien Gougy1
- Ludovico Settala1
- Luis Escobet1
- Luis Fernández de Córdoba y Aragón1
- Madeleine Cosman1
- Maggs Bros Ltd1
- Malachia Ormanian1