Man-Thing is a 2005 monster film based on the Marvel Comics superhero of the same name. Directed by Brett Leonard and written by Hans Rodionoff, it stars Matthew Le Nevez, Rachael Taylor, and Jack Thompson, with Conan Stevens portraying the title character. The film 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 on April 30, 2005. It grossed $1 million from a small release in international theaters.