Christopher Walton Cooper (born July 9, 1951) is an American actor. He has appeared in supporting performances in several major Hollywood films, including the drama American Beauty (1999), the biopic about a NASA engineer titled October Sky (1999), the action spy film The Bourne Identity (2002), the biographical sports film Seabiscuit (2003), the biographical film about Truman Capote, Capote (2005), the geopolitical thriller Syriana (2005), the action-thriller The Kingdom (2007), the crime drama The Town (2010), the musical comedy film The Muppets (2011), the biographical film about Fred Rogers, A Beautiful Day in the Neighborhood (2019), and the coming-of-age film Little Women (2019). He also portrayed Sheriff July Johnson in the acclaimed miniseries Lonesome Dove, which became one of the most successful Westerns in history.
Cooper won both the Academy Award and Golden Globe Award for Best Supporting Actor for his role in the 2002 film Adaptation. He played a lead role in the historical and political thriller Breach (2007), playing FBI agent and traitor Robert Hanssen. He played Daniel Sloan in the 2012 political thriller The Company You Keep, and supervillain Norman Osborn in The Amazing Spider-Man 2 (2014). He also portrayed Al Templeton on the 2016 Hulu miniseries 11.22.63.
He is a frequent collaborator with director John Sayles, including Matewan (1987), City of Hope (1991), Lone Star (1996), Silver City (2004) and Amigo (2010).
He is also known as Christopher W. "Chris" Cooper, Christopher W. Cooper and Coop.