Jack Oleck was an American novelist and comic book writer particularly known for his work in the horror genre.
The brother-in-law of comics pioneer Joe Simon, Oleck's comic book career was basically in two parts. During the Golden Age of comics Oleck wrote for EC Comics and the Simon-Jack Kirby Studio. After the mid-1950s temporary collapse of the industry following the publication of Fredric Wertham's Seduction of the Innocent and the establishment of the Comics Code Authority, Oleck left comics, instead writing novels and publishing an interior design magazine. From the late 1960s until his death in 1981, Oleck worked for DC Comics as a writer for their extensive line of horror/suspense titles.