Del Rey Books is an imprint of the Random House Group, a division of Penguin Random House. The imprint was established in 1977 under the editorship of author Lester del Rey and his wife Judy-Lynn del Rey. Today, the imprint specializes in science fiction, fantasy, horror, and fantasy romance.
^ abjoint venture with Amperwelle Studio München Programmanbietergesellschaft, Axel Springer AG, Burda, Studio Gong, m.b.t. Mediengesellschaft der bayerischen Tageszeitungen für Kabelkommunikation, Medienpool and Radio Bavaria Rundfunkprogrammgesellschaft.
^joint venture with Verlagsgesellschaft Madsack, Studio Gong Niedersachsen and Brune-Rieck-Beteiligungs.
^joint venture with Axel Springer, Heinrich Bauer Verlag, Lühmanndruck Harburger Zeitungsgesellschaft and Morgenpost Verlag.