Man-Thing is a 2005 monster film based on the Marvel Comics character 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 as he investigates a series of deaths in a swamp, leading to him encountering the eponymous creature.

The Man-Thing is a fictional character appearing in American comic books published by Marvel Comics. Created by writers Stan Lee, Roy Thomas, and Gerry Conway and artist Gray Morrow, the character first appeared in Savage Tales #1, and went on to be featured in various titles and in his own series, including Adventure into Fear. Steve Gerber's 39-issue run on the series is considered to be a cult classic.