Man-Thing is a 2005 monster film based on the Marvel Comics character of the same name. Directed by Brett Leonard, it stars Matthew Le Nevez, Rachael Taylor, and Jack Thompson, with Conan Stevens portraying the title character. The film is influenced by Man-Thing comics written by Steve Gerber and follows a Louisiana sheriff (Le Nevez) as he investigates a series of deaths in a swamp, leading to him encountering the eponymous creature.

Originally intended for a theatrical release in the United States, the film premiered on the Sci Fi Channel under the Sci Fi Pictures label in 2005. It grossed $1 million from a small release in international theaters.