The Signal is a 2007 American horror film written and directed by independent filmmakers David Bruckner, Dan Bush and Jacob Gentry. It is told in three parts, in which all telecommunication and audiovisual devices transmit only a mysterious signal turning people mad and activating murderous behaviour in many of those affected.

The film's three interconnected chapters ("transmissions") are presented in a nonlinear narrative. Each of them manifests elements of (besides the overall genre of psychological horror), respectively, splatter film, black comedy, and a post-apocalyptic love story. The Signal was met with a mixed but largely positive critical reception.