Series beginning with L
- Lacey Chronicles
- Lady Grace Mysteries
- Ladybirds
- Land of Elyon
- Land of Stories
- Larklight
- Last Descendants
- Last Dragon Chronicles
- Last Dragonslayer
- Last Kids on Earth
- Last Of The Navel Navigators
- Last Survivors
- Last Wild
- Laura Marlin Mysteries
- Legacy Chronicles
- Legend
- Legend of Frog
- Legendeer Trilogy
- Legends of Orkney
- Letter for the King
- Leven Thumps
- Leviathan
- Liam Scott
- Lily
- Lily Quench
- Lionboy
- Little House Series
- Little Legends
- Little Princesses
- Little Women
- Lockwood & Co.
- Lois Lane
- London Deep
- London Eye Mystery
- London Murder Mysteries
- Lone City Trilogy
- Long Lankin
- Looking Glass Wars
- Lord of the Rings
- Lorien Legacies
- Lorien Legacies Reborn
- Lost
- Lost and Found
- Lost Souls Stories
- Lost Worlds
- Lottie Biggs
- Lottie Lipton
- Louise Trilogy
- Love,Lies and Lemon Pies
- Lovegrove Dynasty
- Loving Spirit
- Lucky Stars
- Lug
- Luke Challenger
- Lulu Baker Trilogy
- Lunar Chronicles
- Luxe
- Lying Tree
- Lyttle Lies