30 Days of Night is a 2007 American horror film based on the comic book miniseries of the same name. The film is directed by David Slade and stars Josh Hartnett and Melissa George. The story focuses on an Alaskan town beset by vampires as it enters into a thirty-day long polar night.

30 Days of Night was originally pitched as a comic, then as a film, but it was rejected. Years later, Steve Niles showed IDW Publishing the idea and it took off. The film was produced on a budget of $30 million and grossed over $75 million at the box office during its six-week run starting on October 19, 2007. Critical reviews were mixed.

A sequel, Dark Days, was released on October 5, 2010 straight to home video. A prequel miniseries, Blood Trails, was released on FEARnet.com and FEARnet On Demand in 2007. Another sequel miniseries, Dust to Dust, placed chronologically before Dark Days, was released in 2008.