John Gregory Betancourt (born October 25, 1963) is an American writer of science fiction, fantasy and mystery novels, as well as short stories. He is also known as the founder and publisher, with his wife Kim Betancourt, of Wildside Press in 1989. In 1998, they entered the print on demand (PoD) market and greatly expanded their production. In addition to publishing new novels and short stories, they have undertaken projects to publish new editions of collections of stories that appeared in historic magazines.