• The Cordell Dynasty
• The Corean Chronicles
• The Corin Chronicles
• The Cormyr Saga
• The Corporation Wars
• The Cottage Tales of Beatrix P
• The Courtesan Series
• The Courtship of Nellie Fisher
• The Cowboys
• The Cowboys Series
• The Cresswell Inheritance
• The Crimson Series
• The Crowthistle Chronicles
• The Crucible
• The Culper Ring Series
• The Cupcake Diaries
• The Custard Protocol
• The Dagger and the Coin
• The Dangerous Trilogy
• The Dark Atlanta Series
• The Dark Disciple
• The Dark Elf Trilogy
• The Dark Tower
• The Dark-Hunters
• The Darling Detectives Trilogy
• The Daughters of Erin
• The Deadly Sins Novels
• The Debutante Files
• The Defenders of the Earth
• The Delia Series
• The Demonborn
• The Demonica Series
• The Derrings
• The Destroyer
• The Devil Is a Part-Timer!
• The Devil Is a Part-Timer! High School!
• The Devil Is a Part-Timer! Manga
• The Devil Within
• The Dewarenne Dynasty Series
• The Dhamon Saga
• The Dieya Chronicles
• The Dining Club
• The Dirk Pitt Adventures
• The Disappearance of Nagato Yuki-chan
• The Disgraceful Dukes
• The Dominick Chronicles
• The Dominion Trilogy
• The Domino Lady
• The Dos Cruces Trilogy
• The Draconic Prophecies