Crime in the city of Adelaide, South Australia has decreased significantly since the 2000s and is controlled by the South Australia Police (SAPOL) and the South Australia court system. Adelaide has developed a reluctant reputation over the years as Australia's "crime capital", despite it being a relatively small city. Perhaps one of Australia's most notorious and well known serial killing cases, the Snowtown murders, occurred primarily on the outskirts of Adelaide in the lower middle class areas of Salisbury and Elizabeth. This, as well as a series of unsolved murder cases in the 1970s, 80s and early 90s, know as The Family Murders lead to one UK documentary dubbing Adelaide the "murder capital of the world". Various highly publicised kidnappings have occurred in the city, notably the unsolved Beaumont children disappearance on Australia Day in 1966.
In 2013, the city was ranked the safest in the country with the lowest rate of crime per population. In 2012, crime rates in the city fell and have decreased even further since then.