Plastic Bag is a 2009 American short film directed by Ramin Bahrani, who also co-wrote it with Jenni Jenkins and produced it with Adam Spielberg. The titular bag is voiced by German filmmaker Werner Herzog, while the film's score is composed by Icelandic musician Kjartan Sveinsson, best known as the keyboardist for rock band Sigur Rós.

Plastic Bag premiered as the opening night film of Corto Cortissimo in the Venice Film Festival. It later screened at Telluride and the New York Film Festival. The film is part of the Independent Television Service (ITVS) online series Futurestates and was produced by Noruz Films and Gigantic Pictures.