Anna Karenina is a 2012 historical romantic drama film directed by Joe Wright. Adapted by Tom Stoppard from Leo Tolstoy's 1878 novel of the same name, the film depicts the tragedy of Russian aristocrat and socialite Anna Karenina, wife of senior statesman Alexei Karenin, and her affair with the affluent cavalry officer Count Vronsky. Keira Knightley stars as the titular character; this is her third collaboration with director Joe Wright following Pride & Prejudice (2005) and Atonement (2007). Jude Law and Aaron Taylor-Johnson appear as Karenin and Vronsky, respectively. Matthew Macfadyen, Kelly Macdonald, Domhnall Gleeson, and Alicia Vikander appear in key supporting roles.

Produced by Working Title Films in association with StudioCanal, the film premiered at the 2012 Toronto Film Festival. It was released on 7 September 2012 in the United Kingdom and on 9 November 2012 in the United States. Anna Karenina earned a worldwide gross of approximately $69 million, mostly from its international run. The film received mostly positive reviews: critics praised the cast, but commented on and criticized the heavily stylized adaptation, and were less enthusiastic with Wright's preference for style over substance and his idea of setting most of the action on a theatre stage.

It earned four nominations at the 85th Academy Awards and six nominations at the 66th British Academy Film Awards, winning Jacqueline Durran both the Academy Award for Best Costume Design and the BAFTA Award for Best Costume Design. In addition, Anna Karenina garnered six nominations at the 17th Satellite Awards, including a Best Actress nod for Knightley and a Best Adapted Screenplay for Stoppard.