Taxi Driver is a 1976 American neo-noir psychological drama film directed by Martin Scorsese, written by Paul Schrader, and starring Robert De Niro, Jodie Foster, Cybill Shepherd, Harvey Keitel, Peter Boyle, Leonard Harris, and Albert Brooks. Set in a morally decaying New York City following the Vietnam War, the film follows Travis Bickle (De Niro), a veteran Marine and taxi driver, and his deteriorating mental state as he works nights in the city.

With The Wrong Man (1956) and A Bigger Splash (1973) as inspiration, Scorsese wanted the film to feel like a dream to audiences. Filming began in the summer of 1975 in New York City, with actors taking pay cuts to ensure that the project could be completed on a low budget of $1.9 million. Production concluded that same year. Bernard Herrmann composed the film in what would be his final score; the music was finished just hours before his death; the film is dedicated to him.

The film was theatrically released by Columbia Pictures on February 8, 1976, and was a critical and commercial success despite generating controversy for its graphic violence in the climactic ending and the casting of then 12-year-old Foster in the role of a child prostitute. The film received numerous accolades including the Palme d'Or at the 1976 Cannes Film Festival and four nominations at the 49th Academy Awards, including Best Picture, Best Actor (for De Niro), and Best Supporting Actress (for Foster).

Although Taxi Driver generated further controversy for its role in John Hinckley Jr.'s plan to assassinate then-President Ronald Reagan, the film has remained popular. It is considered one of the greatest films ever made and one of the most culturally significant and inspirational of its time, garnering cult status. In 2022, Sight & Sound named it the 29th-best film ever in its decennial critics' poll, and the 12th-greatest film of all time on its directors' poll, tied with Barry Lyndon. In 1994, the film was considered "culturally, historically, or aesthetically" significant by the U.S. Library of Congress and was selected for preservation in the National Film Registry.