Josh James Brolin (born February 12, 1968) is an American actor. A son of actor James Brolin, he gained fame in his youth for his role in the adventure film The Goonies (1985). After years of decline, Brolin had a resurgence with his starring role in the crime film No Country for Old Men (2007). Brolin received a nomination for the Academy Award for Best Supporting Actor for portraying Dan White in the biopic Milk (2008).

Brolin's career progressed with roles in W. (2008), True Grit (2010), Wall Street: Money Never Sleeps (2010), Men in Black 3 (2012), Oldboy (2013), Inherent Vice (2014), Everest (2015), and Hail, Caesar! (2016). He gained wider recognition for playing Thanos in the Marvel Cinematic Universe (MCU), including in the films Avengers: Infinity War (2018) and Avengers: Endgame (2019), as well as Cable in Deadpool 2 (2018). Brolin also collaborated with filmmaker Denis Villeneuve in the action thriller Sicario (2015) and in the science fiction films Dune (2021) and Dune: Part Two (2024), in which he played Gurney Halleck.