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.

Daniel James Abraham, pen names M. L. N. Hanover and James S. A. Corey, is an American novelist, comic book writer, screenwriter, and television producer. He is best known as the author of The Long Price Quartet and The Dagger and the Coin fantasy series, and with Ty Franck, as the co-author of The Expanse science fiction series, written under the joint pseudonym James S. A. Corey. The series has been adapted into the television series The Expanse (2015–2022), with both Abraham and Franck serving as writers and producers on the show. He also contributed to Wildcards anthology series shared universe.