The 1999 Backlash was the inaugural Backlash professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF; WWE as of 2002). It took place on April 25, 1999, at the Providence Civic Center in Providence, Rhode Island and was presented by Castrol GTX. The event had originally been promoted as "Backlash: In Your House", but the branding was dropped as the WWF discontinued the In Your House series before Backlash was held. As a result, Backlash was the first non-In Your House monthly PPV held by the promotion outside of their five major events at the time (the In Your House branding would be revived by WWE for its NXT developmental brand in 2020). The concept of the pay-per-view was based around the backlash from WWF's flagship event, WrestleMania.