Captain America: The Winter Soldier is a 2014 American superhero film based on the Marvel Comics character Captain America, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures. It is the sequel to Captain America: The First Avenger (2011) and the ninth film in the Marvel Cinematic Universe (MCU). The film was directed by Anthony and Joe Russo from a screenplay by the writing team of Christopher Markus and Stephen McFeely. It stars Chris Evans as Steve Rogers / Captain America alongside Scarlett Johansson, Sebastian Stan, Anthony Mackie, Cobie Smulders, Frank Grillo, Emily VanCamp, Hayley Atwell, Toby Jones, Jenny Agutter, Robert Redford, and Samuel L. Jackson. In the film, Rogers joins forces with Natasha Romanoff (Johansson) and Sam Wilson (Mackie) to uncover a conspiracy within the spy agency S.H.I.E.L.D. while facing a mysterious assassin known as the Winter Soldier (Stan).

Markus and McFeely began writing the sequel around the release of The First Avenger in July 2011. The script draws from the Winter Soldier story arc in the comic books written by Ed Brubaker and conspiracy fiction from the 1970s such as Three Days of the Condor (1975). The film explores S.H.I.E.L.D., similarly to how the first film explored the U.S. military after Rogers was shown working for the agency in the MCU crossover film The Avengers (2012). The Russo brothers signed to direct in June 2012, and casting began the following month. Filming began in April 2013 in Los Angeles, California, before moving to Washington, D.C., and Cleveland, Ohio. Though the directors used practical effects and intense stunt work, 2,500 visual effects shots were created by six companies.

Captain America: The Winter Soldier premiered at the El Capitan Theatre in Hollywood, Los Angeles, on March 13, 2014, and was released in the United States on April 4, as part of Phase Two of the MCU. The film received positive reviews from critics, with praise for the performances, action sequences, storyline, and themes. The film was nominated for the Academy Award for Best Visual Effects. It grossed $714 million worldwide, making it the seventh-highest-grossing film of 2014. A sequel titled Captain America: Civil War, also directed by the Russos, was released in 2016.