Which actor plays the adult Benjamin Button in Fincher's 2008 film?

Brad Pitt plays the adult Benjamin Button in David Fincher’s 2008 film The Curious Case of Benjamin Button. The film follows Benjamin, a man born with an unusual condition that causes him to age backward physically while living his life in the ordinary forward direction.

Pitt’s performance covers Benjamin’s central adult years, including his time working on tugboats, traveling internationally, serving in the military, and reconnecting with Daisy, the dancer he has known since childhood. The production used extensive makeup, digital effects, and performance techniques to present Benjamin at different apparent ages; Pitt remains the actor associated with the character throughout.

A common mistake is to treat the younger-looking versions as entirely separate performances. Children and digital effects help portray Benjamin at certain stages, but Brad Pitt is the credited lead actor. The film was loosely inspired by F. Scott Fitzgerald’s 1922 short story, which also centers on a character born old and aging backward.