Blackrock is a 1997 Australian teen drama thriller film produced by David Elfick and Catherine Knapman, directed by Steven Vidler with the screenplay by Nick Enright. Marking Vidler's directorial debut, the film was adapted from the play of the same name, also written by Enright, which was inspired by the murder of Leigh Leigh. The film stars Laurence Breuls, Simon Lyndon and Linda Cropper, and also features the first credited film performance of Heath Ledger. The film follows Jared (Breuls), a young surfer who witnesses his friends raping a girl. When she is found murdered the next day, Jared is torn between revealing what he saw and protecting his friends.

Leigh's family opposed the fictionalisation of her murder, though protests against the film were abandoned after it received financial backing from the New South Wales Film and Television Office. Blackrock was filmed over a period of two weeks at locations including Stockton, where Leigh was murdered, a decision that was opposed by local residents who said that memories of the murder were still fresh. While the film was never marketed as being based on a true story, numerous comparisons between the murder and the film were made, and many viewers believed it to be a factual account of the murder.

The film premiered at the Sundance Film Festival, and was also shown at the Boston Film Festival, though it failed to find an American theatrical distributor. It was nominated for five AACTA Awards, including Best Film, and won the Feature Film – Adaptation award as well as the Major Award at the 1997 AWGIE Awards. It received generally positive reviews in Australia, where it grossed $1.1 million at the box office. Outside Australia, where audiences were less familiar with Leigh's murder, critical reception of the film was mixed.