Pirates of the Caribbean: At World's End is a 2007 American epic fantasy swashbuckler film directed by Gore Verbinski, produced by Jerry Bruckheimer, and written by Ted Elliott and Terry Rossio. The direct sequel to Pirates of the Caribbean: Dead Man's Chest (2006), it is the second installment in the Pirates of the Caribbean film series, and follows an urgent quest to locate and save Captain Jack Sparrow (Johnny Depp), trapped on a sea of sand in Davy Jones' Locker, and convene the Brethren Court in a war against the East India Trading Company. In an uneasy alliance, Will Turner (Orlando Bloom), Elizabeth Swann (Keira Knightley), Hector Barbossa (Geoffrey Rush), and the Black Pearl crew rescue Jack and prepare to fight Lord Cutler Beckett, who controls Davy Jones and the Flying Dutchman.

Two sequels to Pirates of the Caribbean: The Curse of the Black Pearl were conceived in 2004, with Elliott and Rossio developing a story arc that would span both films. The film was shot in two shoots during 2005 and 2006, the former of which was released as Dead Man's Chest. This also marks the final film of the series to be directed by Verbinski. With a production budget of US$300 million, it was the most expensive film ever made at the time of its release.

At World's End premiered at the Disneyland Resort on May 19, 2007, then theatrically released in the United States on May 25. The film received mixed reviews from critics, but was the highest-grossing film of 2007, bringing in over $963 million. It was nominated at the 80th Academy Awards for Best Makeup and Best Visual Effects, and won Favorite Movie Actor for Johnny Depp at the 2008 Kids' Choice Awards. A standalone sequel, On Stranger Tides, was released in 2011. Dead Men Tell No Tales, released in 2017, followed as a direct continuation of At World's End.