Sin City is the title for a series of comics (List of Sin City yarns) by Frank Miller (Frank Miller (comics)), told in a film noir-like style (now known as Neo noir). The first story originally appeared in "Dark Horses Fifth Anniversary Special" (April, 1991), and continued in Dark Horse Presents #51-62 from May 1991 to June 1992, under the title of Sin City, serialized in thirteen parts. Several other stories of variable lengths have followed. All stories take place in Basin City, with frequent recurring characters and intertwining stories.

A movie adaptation (Sin City (film)) of Sin City, co-directed (film director) by Robert Rodriguez and Frank Miller (Frank Miller (comics)) with "special guest director" Quentin Tarantino, was released on April 1, 2005. The Sin City volumes were reprinted with new covers and in a reduced size to coincide with the motion pictures theatrical release. A planned sequel to the 2005 hit has been moved around the release schedule for years, with current plans having pre-production start in 2010.