Former Owner
- Lionel Tollemache, 4th Earl of Dysart2
- Lisa Kiser11
- Lisa Norris Elkins1
- Little family1
- Llanthony Priory1
- Llewelyn Lloyd-Mostyn, 3rd Baron Mostyn of Mostyn3
- Lodi Cathedral1
- Lodovicus Saltariellus1
- Loftus Bland1
- Long Island Historical Society, Maine1
- Louis Bourguet1
- Louis Charles Elson14
- Louis Charles Karpinski1
- Louis César de La Baume Le Blanc3
- Louis H. Silver4
- Louis II, Count of Flanders1
- Louis Thompson Rowe1
- Louis XII of France2
- Louis XIV of France1
- Louis d'Aumont de Rochebaron1