Cuckoo is a 2009 British thriller film starring Laura Fraser, Richard E. Grant, Tamsin Greig, Antonia Bernath and Adam F, set in London, UK. It was created, written, and directed by Richard Bracewell and produced by Richard and Tony Bracewell. The film was cast by Dan Hubbard of the Hubbard casting family and scored by Bafta-nominated composer Andrew Hewitt.

Cuckoo is described as a "thriller about sounds and lies". The film tells the story of student Polly (Laura Fraser) who begins to think she is going mad as she starts to hear unexplained sounds.