Leviathan Wakes is a science fiction novel by James S. A. Corey, the pen name of American writers Daniel Abraham and Ty Franck. It is the first book in the Expanse series, followed by Caliban's War (2012), Abaddon's Gate (2013) and six other novels. Leviathan Wakes was nominated for the 2012 Hugo Award for Best Novel and the 2012 Locus Award for Best Science Fiction Novel. The novel was adapted for television in 2015 as the first season-and-a-half of The Expanse by Syfy. Five short stories that take place before, during, or after Leviathan Wakes were published between 2011 and 2019.

James S. A. Corey is the pen name used by collaborators Daniel Abraham and Ty Franck, authors of the science fiction series The Expanse. The first and last name are taken from Abraham's and Franck's middle names, respectively, and S. A. are the initials of Abraham's daughter. The name is also meant to emulate many of the space opera writers of the 1970s. In Germany, their books are published under the name James Corey with the middle initials omitted.