Cataclysm is an 18-chapter DC Comics crossover story arc that ran through the various Batman family comics from March to May 1998. The plot of the storyline centers on Gotham City being hit by a massive earthquake, the epicenter of which is less than a mile from Wayne Manor. In the wake of the destruction, Batman and his allies join the frantic rescue efforts around the devastated city, which soon spirals into chaos. This story arc would act as a catalyst for the Batman comics and its spin-off titles, signaling the beginning of nearly two years of storylines that would spring forth in the earthquake's aftermath, culminating in the year-long Batman: No Man's Land saga. Cataclysm itself takes place a short time after the events of Batman: Contagion and Batman: Legacy, two previous crises which also nearly resulted in Gotham City's destruction.

Gotham City, or simply Gotham, is a fictional city in the Eastern United States that serves as the primary city appearing in American comic books published by DC Comics. It is best known as the home of the superhero, Batman, and his allies and foes. Created by writer Bill Finger and artist Bob Kane, the city was first identified as Batman's place of residence in Batman #4 and has since been the primary setting for stories featuring the character. In most of its incarnations, Gotham is depicted as one of the most crime-ridden cities in the world.