Former Owner
- Joseph ben Aryeh1
- Joseph-Félix Allard1
- Judah ben Moses, ha-Rofe, ha-Kohen1
- Justin MacCarthy Reagh1
- K. B. Starkie1
- Katherine Petersen1
- Kulturhistorisches Museum Magdeburg1
- Lajos Graf Apponyi de Nagy-Appony1
- Latham family1
- Laurence William Hodson1
- Leo Olschki1
- Leonello d'Este, Marquis of Ferrara1
- Liechtenstein State Library1
- Little family1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn1
- Louis César de La Baume Le Blanc1
- Louis Jean Gaignat1
- Louis XII of France1
- Lucien Delamarre1
- Lycée Louis-le-Grand1