The Longford Lyell Award is a lifetime achievement award presented by the Australian Academy of Cinema and Television Arts (AACTA), a non-profit organisation whose aim is "to identify, award, promote and celebrate Australia's greatest achievements in film and television." The award is presented at the annual AACTA Awards, which hand out accolades for technical achievements in feature film, television, documentaries and short films. From 1968 to 2010, the award was presented by the Australian Film Institute (AFI), the Academy's parent organisation, at the annual Australian Film Institute Awards. When the AFI launched the Academy in 2011, it changed the annual ceremony to the AACTA Awards, with the current award being a continuum of the AFI Raymond Longford Award.

The Australian Academy of Cinema and Television Arts Awards, known as the AACTA Awards, are presented annually by the Australian Academy of Cinema and Television Arts (AACTA). The awards recognise excellence in the film and television industry, both locally and internationally, including the producers, directors, actors, writers, and cinematographers. It is the most prestigious awards ceremony for the Australian film and television industry. They are generally considered to be the Australian counterpart of the Academy Awards for the United States and the BAFTA Awards for the United Kingdom.