The Bourne Legacy is a 2012 American action-thriller film directed by Tony Gilroy from a screenplay he wrote with his brother Dan Gilroy based on a story written by him, and is the fourth installment in the series of films adapted from the Jason Bourne novel series originated by Robert Ludlum and continued by Eric Van Lustbader. The film centers on black ops agent Aaron Cross (portrayed by Jeremy Renner), an original character. In addition to Renner, the film stars Rachel Weisz, Edward Norton, Oscar Issac, and Stacy Keach, with Scott Glenn, Joan Allen, and Albert Finney reprising their roles from previous installments. The Bourne Legacy was preceded by The Bourne Identity (2002), The Bourne Supremacy (2004), and The Bourne Ultimatum (2007).

The Bourne Legacy is the only film in the franchise that does not feature titular character Jason Bourne, as his actor, Matt Damon, chose not to return because Paul Greengrass, who directed the previous two installments, was not returning to direct. However, Bourne is shown in pictures and mentioned by name several times throughout the film. Tony Gilroy, co-screenwriter of the first three films, sought to continue the story of the film series without changing its key events, and parts of The Bourne Legacy take place at the same time as the previous film, The Bourne Ultimatum. Aaron Cross is a member of a black ops program called Operation Outcome whose subjects are genetically enhanced. He must run for his life once former CIA Treadstone agent Jason Bourne's actions lead to the public exposure of Operation Treadstone and its successor, Operation Blackbriar.

Filming was primarily in New York City, with some scenes shot in the Philippines, South Korea, and Canada. Released on August 10, 2012, the film received mixed reviews and grossed $276 million at the box office from a budget of $125 million. It was followed in 2016 by Jason Bourne, with Damon reprising his role.