300 is a historically inspired 1998 comic book limited series written and illustrated by Frank Miller with painted colors by Lynn Varley.

The comic is a fictional retelling of the Battle of Thermopylae and the events leading up to it from the perspective of Leonidas of Sparta. 300 was particularly inspired by the 1962 film The 300 Spartans, a film Miller watched as a young boy. The work was adapted in 2006 to a film of the same name.

In 2018, Dark Horse published Xerxes: The Fall of the House of Darius and the Rise of Alexander, also written and drawn by Miller, acting as a prequel and sequel to the events of 300, depicting Xerxes I's rise to the throne, and the subsequent destruction of the Persian Empire under his descendant Darius III, by Alexander the Great.