Madball is an American New York hardcore band. Originated in the late 1980s as a side project of Agnostic Front, the band developed after Agnostic Front's vocalist Roger Miret would let his younger half-brother Freddy Cricien take the microphone and perform lead vocals during Agnostic Front shows. Following, Agnostic Front's 1992 disbandment, Madball became the members' main project and many became a part of the band who were never in Agnostic Front. They have released nine studio albums and four EPs.

New York hardcore is both the hardcore punk music created in New York City and the subculture and lifestyle associated with that music. New York hardcore grew out of the hardcore scene established in Washington, D.C., by bands such as Bad Brains and Minor Threat. Initially a local phenomenon of the 1980s and 1990s, New York hardcore eventually grew to establish an international reputation with little to moderate mainstream popularity but with a dedicated and enthusiastic underground following, primarily in Europe and the United States. With a history spanning over more than four decades, many of the early New York hardcore bands are still in activity to this day. Some of them have been continuously or almost continuously active since their formation as well as having reunion shows.