WWE Backlash is a professional wrestling event that is produced by the American company WWE, the world's largest professional wrestling promotion. It is broadcast live and has been available through pay-per-view (PPV) since 1999 and via livestreaming since 2016. Since premiering in 1999, 19 events have been held, with its most recent 19th edition occurring at the LDLC Arena in Décines-Charpieu in the Metropolis of Lyon, France on May 4, 2024. With the exception of the events held from 2016 to 2020, the concept of the show is based around the backlash of WWE's flagship event, WrestleMania.