Gardner Dozois (born July 23, 1947) is an American science fiction author and editor. He was editor of Asimov's Science Fiction magazine from 1985 to 2004.

A subtle writer with a distinctive prose style who has mainly worked in shorter forms, he has won the Nebula Award for best short story twice -- for "The Peacemaker" in 1983, and for "Morning Child" in 1984. His short fiction has been collected in The Visible Man (1977), Geodesic Dreams (a best-of collection), Slow Dancing through Time (1990, collaborations), and Strange Days (2001, another best-of collection).

A solo novel, Strangers (1978), and a collaboration with George Alec Effinger, Nightmare Blue (1977), represent his novel-length output. After becoming editor of Asimov's, Dozois's fiction output dwindled, but he is now making a comeback.

Dozois has won a record 13 Hugo Awards for Best Professional Editor, having won nearly every year since 1988.

Dozois is a well-known short fiction anthologist. After resigning from his Asimov's gig, he still remains the editor of the anthology series The Year's Best Science Fiction, published annually since 1984. And, with Jack Dann, he has edited a long series of themed anthologies, each with a self-explanatory title such as Cats, Dinosaurs, Seaserpents, or Hackers.

A book-length interview by Michael Swanwick, covering each published piece of fiction Dozois ever wrote, came out in 2001 under the title Being Gardner Dozois.