• The Josephine B. Trilogy
• The Judge of Egypt Trilogy
• The June Lyons Series
• The Kendrick-Coulter Series
• The Kenneth Chinran
• The Ki and Vandien Quartet
• The King Raven Trilogy
• The Kingkiller Chronicle
• The Kiss Trilogy
• The Knights of Arrethtrae
• The Knights of Myth Drannor
• The Lace Trilogy
• The Ladies Who Lunch
• The Lady Penitent
• The Lady Series
• The Lady Spies Series
• The Lakeshore Chronicles
• The Langton Quartet
• The Lanternlight Files
• The Last Disciple
• The Last Gunfighter
• The Last Legion
• The Last Mythal
• The Last Realm
• The Lawman
• The Lay of Slaine MAC Roth
• The Lazarus War
• The League
• The League of Second Sons
• The Left Hand of God
• The Legacy Trilogy
• The Legend Hunters
• The Legend of Asahiel Series
• The Legend of Drizzt
• The Legend of Eli Monpress
• The Legend of the Four Soldiers
• The Lestrade Mystery Series
• The Library of Black America
• The Licanius Trilogy
• The Life Chapters
• The Lifelight Series
• The Lighthorseman
• The Linsha Trilogy
• The Lionwolf Trilogy
• The Liquid Laughter Project
• The Long Price Quartet
• The Lord Richard, Vampire
• The Lord Trilogy
• The Lords of Misrule
• The Lords of Worth