Legacy is a crossover story arc in the Batman comic book series, which is a sequel to another Batman story arc, Contagion and also serves as a follow-up to the Knightfall story arc.

Contagion is the name of a story arc that ran through the various Batman comic book series. It concerns the outbreak of a lethal disease in Gotham City, and Batman's attempts to combat it. The events of this story led into Batman: Legacy and Batman: Cataclysm, which itself leads into Batman: No Man's Land. It ran from March through April 1996.