Batman: The Long Halloween is a 13-issue comic book limited series written by Jeph Loeb with art by Tim Sale. It was originally published by DC Comics in 1996 and 1997. It was inspired by the three Batman: Legends of the Dark Knight Halloween Specials by the same creative team. The entire series has been collected in both trade paperback, and as part of the DC Comics Absolute Editions. The series' success led to Loeb and Sale to reteam for two sequels, Batman: Dark Victory and Catwoman: When in Rome, which parallels the events in Dark Victory.
Taking place during Batman's early days of crime fighting, The Long Halloween tells the story of a mysterious killer named Holiday, who murders people on holidays, one each month.