Celia Natasha "Tasha" Douty (11 February 1943 – 1 September 1983) was a British-born Australian resort worker who was murdered on Brampton Island in Queensland, Australia. The crime remained unsolved until 2001, when Sydney motor industry finance Business Manager, Wayne Butler, was found guilty. It was the first murder in Australia to be solved using DNA profiling. The prosecution relied heavily on DNA evidence and it became a case study for the use of the technique in court.