Farewell (French: L'affaire Farewell; literally The Farewell Affair) is a 2009 French espionage thriller film directed by Christian Carion, starring Guillaume Canet and Emir Kusturica. The film is loosely based on the actions of the high-ranking KGB official, Vladimir Vetrov. It was released in the United States in June 2010. It was adapted from the book Bonjour Farewell: La vérité sur la taupe française du KGB (1997) by Serguei Kostine.

The movie was filmed in Ukraine and Finland because Russia refused to provide a permit for filming in Moscow. A Reuters news item also stated that the Russian government "dissuaded Russian movie actor Sergei Makovetsky and Russian producer and director Nikita Mikhalkov from participating in the film" (according to the director).