• The Necromancer Chronicles
• The Nerd Series
• The Nightsong Trilogy
• The No. 1 Ladies' Detective Agency
• The Notorious Gentlemen
• The O'Malleys
• The Offspring
• The One Night Trilogy
• The Onyx Court
• The Oregon Files
• The Osiris Project
• The Oxford Blue series
• The Oxford Sherlock Holmes
• The Oz Series
• The Parasol Protectorate
• The Penguin Book of the British Short Story
• The Penguin English Library
• The Percheron Saga
• The Perennial Collection
• The Pinecraft Brides
• The Princess Series
• The Protectors Trilogy
• The Pure Trilogy
• The Quickening
• The Ravenloft Covenant
• The Remaining
• The Reverend Curtis Black Series
• The Rift Uprising Trilogy
• The Ring of Fire
• The Riyria Chronicles
• The Rook Files
• The Royals
• The Sailing Thrillers
• The Sam Capra series
• The Scoundrels Series
• The Sea Detective
• The Season's Original
• The Secret Life of Scoundrels
• The Shadow
• The Shadow Campaigns
• The Shadow Guild Series
• The Shambling Guides
• The Sharing Knife series
• The Silver Wyrm
• The Simms Series
• The Soldier Son Trilogy
• The Song of Albion
• The Southern Reach Trilogy
• The Spider
• The Stain-Busting Mysteries