John Gregory Betancourt (born October 25, 1963) is a writer of science fiction, fantasy and mystery novels as well as short stories. He has worked as an assistant editor at Amazing Stories and editor of Horror: The Newsmagazine of the Horror Field, the revived Weird Tales magazine, the first issue of H. P. Lovecraft's Magazine of Horror (which he subsequently hired Marvin Kaye to edit), Cat Tales magazine (which he subsequently hired George H. Scithers to edit), and Adventure Tales magazine.