Knopf Doubleday is a prominent publishing company based in the United States, known for producing a wide range of literary works. It is part of the larger Penguin Random House group and has a rich history dating back to its founding in 1915. The company publishes both fiction and non-fiction, featuring acclaimed authors and award-winning titles. The imprint includes several well-known divisions, such as Alfred A. Knopf and Doubleday, each with its own unique focus and style. Knopf Doubleday is recognized for its commitment to quality literature and has published many bestsellers and classics over the years.