The Sight & Sound Greatest Films of All Time 2012 was a worldwide opinion poll conducted by Sight & Sound and published in the magazine's September 2012 issue. Sight & Sound, published by the British Film Institute, has conducted a poll of the greatest films every 10 years since 1952.

The British Film Institute (BFI) is a film and television charitable organisation which promotes and preserves film-making and television in the United Kingdom. The BFI uses funds provided by the National Lottery to encourage film production, distribution, and education. It is sponsored by the Department for Culture, Media and Sport, and partially funded under the British Film Institute Act 1949.