Bat Boy is a fictional creature who made several appearances in the defunct supermarket tabloid Weekly World News. The Weekly World News published patently fabricated stories which were purported to be factual. Within the pages of the paper, Bat Boy is described as a creature who is 'half human and half bat'. His pursuers, according to Weekly World News are scientists and United States government officials; he is frequently captured, then later makes a daring escape.

Bat Boy was created by former Weekly World News Editor Dick Kulpa. He debuted as a cover story on June 23, 1992. The original front-page photo of Bat Boy, showing his grotesque screaming face, was the second-best selling issue in the tabloid's history, and he has since evolved into a pop-culture icon. The story of Bat Boy was turned into an acclaimed off-Broadway musical, Bat Boy: The Musical.