In 2002, Diamond Comic Distributors spun off its book trade efforts into a new division: Diamond Book Distributors (DBD). DBD is dedicated to making a wide selection of graphic novels and other pop culture merchandise available globally to bookstores, libraries, schools, online retailers, mass merchants and others. The company features a team of seasoned professionals in sales and marketing, as well as the Diamond Comic Distributors reputation and infrastructure in selling graphic novels and related pop-culture merchandise.

DBD is the home to a number of world class publishers including IDW Publishing, publisher of 30 Days of Night, Locke & Key, My Little Pony, G.I. Joe and Transformers; Image Comics, publisher of The Walking Dead, Saga, Chew, and Morning Glories; as well as publishers Oni Press, Top Shelf Productions, and many others.