300 is a historical epic film directed by Zack Snyder, scheduled to be released in 2007. The film is adapted from Frank Miller's graphic novel of the same name about the Battle of Thermopylae. Miller is involved as an executive producer.

300 is a graphic novel, written and illustrated by Frank Miller with painted colors by Lynn Varley. It depicts the Battle of Thermopylae and the events leading up to it from the perspective of Leonidas, king of Sparta. The comic was particularly inspired by the 1962 film, The 300 Spartans, a movie that Miller watched as a young boy.