Criminal activity in New South Wales, Australia is combated by the New South Wales Police Force and the New South Wales court system, while statistics about crime are managed by the Bureau of Crime Statistics and Research. Modern Australian states and cities, including New South Wales, have some of the lowest crime rates recorded globally with Australia ranked the 13th safest nation and Sydney ranked the 5th safest city globally. As of September 2018 the City of Penrith (475.7) and City of Blacktown (495.1). Rural areas have comparatively high crime rates per 100,000 with rural shires such as Walgett Shire (1350.3) and Moree Plains Shire (1236.2) having some of the highest violent crime rates in the state. The overall NSW crime rate has been in steady decline for many years.

The New South Wales Police Force is a law enforcement agency of the state of New South Wales, Australia, established in 1862. With more than 17,000 police officers, it is the largest police organisation in Australia, policing an area of 801,600 square kilometres with a population of more than 8.2 million people.