The Outback Communities Authority (OCA) is a statutory authority in South Australia (SA) created under the "Outback Communities (Administration and Management) Act 2009". It has been established to "manage the provision of public services and facilities to outback communities" which are widely dispersed across the Pastoral Unincorporated Area which covers almost 60% of South Australia's land area. The authority has its seat at both Port Augusta which is located outside the unincorporated area and at Andamooka. The authority serves an area of , slightly smaller than France. The area has a population of 3,750, of whom 639 are Indigenous Australians (mostly if not all Aboriginal), and includes several large pastoral leases and mining operations.