Backlash (2009) was a professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It took place on April 26, 2009, at the Dunkin' Donuts Center in Providence, Rhode Island. The eleventh event under the Backlash banner, it involved talent from all three WWE brands: Raw, SmackDown, and ECW. It was the final Backlash event until 2016.

The card comprised seven matches. The main matches saw Edge defeating World Heavyweight Champion John Cena in a Last Man Standing match to win the title and Randy Orton winning the WWE Championship in a Six-Man Tag Team match pitting champion Triple H, Batista and Shane McMahon against The Legacy (Orton, Cody Rhodes and Ted DiBiase). The card also included Jeff Hardy defeating Matt Hardy in an "I Quit" match and Christian winning the ECW Championship by defeating Jack Swagger. The event received 182,000 buys, down on the previous event figure of 200,000 buys.