Walk the Line is a 2005 American biographical drama film directed by James Mangold. The screenplay, written by Mangold and Gill Dennis, is based on two autobiographies by the American singer-songwriter Johnny Cash: Man in Black: His Own Story in His Own Words (1975) and Cash: The Autobiography (1997). The film follows Cash's early life, his romance with the singer June Carter, his ascent in the country music scene, and his drug addiction. It stars Joaquin Phoenix as Cash, Reese Witherspoon as Carter, Ginnifer Goodwin as Cash's first wife Vivian Liberto, and Robert Patrick as Cash's father.

James Allen Mangold is an American film director, producer and screenwriter. Noted for his versatility in tackling a range of genres, Mangold made his debut as a film director with Heavy (1995), and is best known for the films Cop Land (1997), Girl, Interrupted (1999), Identity (2003), Walk the Line (2005), 3:10 to Yuma (2007), and two films in the X-Men franchise with The Wolverine (2013) and Logan (2017), the latter of which earned him a nomination for the Academy Award for Best Adapted Screenplay. He then directed the sports drama film Ford v Ferrari (2019), which earned him a nomination for the Academy Award for Best Picture, and directed and co-wrote Indiana Jones and the Dial of Destiny (2023), the fifth and final installment in the Indiana Jones series.