The 2003 Backlash was the fifth Backlash professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It was held for wrestlers from the promotion's Raw and SmackDown! brand divisions. The event took place on April 27, 2003, at the Worcester Centrum in Worcester, Massachusetts. It was the first Backlash event held under the WWE name after the promotion was renamed from World Wrestling Federation (WWF) to WWE in May 2002. The concept of the pay-per-view was based around the backlash from WrestleMania XIX.