• The Mr. Men Show
• The Necromancer Chronicles
• The Neophyte Warrior: Book 5
• The Nerd Series
• The Newsflesh Trilogy
• The Night Angel Trilogy
• The Night's Dawn
• The Nightsong Trilogy
• The No. 1 Ladies' Detective Agency
• The Nonesuch Dickens
• The Notorious Gentlemen
• The Numa Files
• The O'Malleys
• The Obsidian Trilogy
• The Offspring
• The One Night Trilogy
• The Onyx Court
• The Oregon Files
• The Original Elsie Classics, Book 6
• The Original Elsie Classics, Book 7
• The Osiris Project
• The Osserian Saga
• The Other Way Home
• The Other Way Home, 2
• The Other Way Home, 4
• The Others
• The Outcast
• The Overnight Billionaires
• The Oversight
• The Oxford Blue series
• The Oxford Chronicles
• The Oxford Chronicles, 1
• The Oxford Sherlock Holmes
• The Oz Series
• The PI Julie Collins Series
• The Pack
• The Paladin
• The Parasol Protectorate
• The Parasol Protectorate (Manga)
• The Pauline Sokol Mystery Series
• The Pearl
• The Pembroke Palace Series
• The Penbrook Diaries
• The Pendragon Island Series
• The Penguin Book of the British Short Story
• The Penguin English Library
• The Penguin Vladimir Nabokov Hardback Collection
• The Penguins of Madagascar
• The Penwich School for Virtuous Girls
• The Percheron Saga