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Berkley Books is an imprint of Penguin Group (USA) that began as an independent company in 1955. It was established by Charles Byrne and Frederick Klein, who were working for Avon and formed "Chic News Company". They renamed it Berkley Publishing Co. in 1955. They soon found a niche in science fiction works. They were bought out in 1965 by G. P. Putnam's Sons and became their paperback publisher.
Penguin Group purchased Putnam in 1996. Penguin merged with Random House in 2013 to form Penguin Random House. Today, Berkley is part of PRH's Penguin Adult group and prints in mass-market paperback, trade paperback, and hardcover formats. In 2015, sister paperback group New American Library was merged into Berkley.
Its major authors have included: