A Beautiful Mind is a 2001 American biographical film about John Forbes Nash, the Nobel Laureate in Economics. The film was directed by Ron Howard and written by Akiva Goldsman. It was inspired by a bestselling, Pulitzer Prize-nominated 1998 book of the same name by Sylvia Nasar. The film stars Russell Crowe, along with Jennifer Connelly, Ed Harris and Paul Bettany.

The story begins in the early years of Nash's life at Princeton University as he develops his "original idea" that will revolutionize the world of mathematics. Early in the movie, Nash begins developing paranoid schizophrenia and endures delusional episodes while painfully watching the loss and burden his condition brings on his wife and friends.

The film opened in US cinemas on December 21, 2001. It was well-received by critics, grossed over $300 million worldwide, and went on to win four Academy Awards, including Best Picture, Best Director, Best Adapted Screenplay, and Best Supporting Actress. It was also nominated for Best Leading Actor, Best Editing, Best Makeup, and Best Score. The film has been criticized for its inaccurate portrayal of some aspects of Nash's life.