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 the writing team of Ted Elliott and Terry Rossio. The direct sequel to Pirates of the Caribbean: Dead Man's Chest (2006), it is the third installment in the Pirates of the Caribbean film series. Set a few months after Dead Man's Chest, the story follows an urgent quest to locate and rescue 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 crew of the Black Pearl 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 nearly US$300 million, it was, at time of production, the most expensive film ever made.

Buena Vista Pictures Distribution released At World's End in the United States on May 18, 2007, and received mixed reviews from critics. It 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. It was followed by Dead Men Tell No Tales in 2017, which was a direct continuation of At World's End.