Tinker Tailor Soldier Spy is a 2011 Cold War spy thriller film directed by Tomas Alfredson. The screenplay was written by Bridget O'Connor and Peter Straughan, based on John le Carré's 1974 novel of the same name. The film stars an ensemble cast including Gary Oldman as George Smiley, with Colin Firth, Tom Hardy, John Hurt, Toby Jones, Mark Strong, Benedict Cumberbatch, Ciarán Hinds, David Dencik and Kathy Burke. It is set in London in the early 1970s and follows the hunt for a Soviet double agent at the top of the British secret service.

David John Moore Cornwell, better known by his pen name John le Carré, was a British author, best known for his espionage novels, many of which were successfully adapted for film or television. A "sophisticated, morally ambiguous writer", he is considered one of the greatest novelists of the postwar era. During the 1950s and 1960s, he worked for both the Security Service (MI5) and the Secret Intelligence Service (MI6). Near the end of his life, due to his strong disapproval of Brexit, he took out Irish citizenship, which was possible due to his having an Irish grandparent.