Northern Rivers is the most northeasterly region of the Australian state of New South Wales, located between 590 and 820 kilometres north of the state capital, Sydney, and encompasses the catchments and fertile valleys of the Clarence, Richmond, and Tweed rivers. It extends from Tweed Heads in the north to the southern extent of the Clarence river catchment which lies between Grafton and Coffs Harbour, and includes the main towns of Tweed Heads, Byron Bay, Ballina, Kyogle, Lismore, Casino and Grafton. At its most northern point, the region is 102 kilometres (63 mi) south-southeast of the Queensland capital, Brisbane.

In the state of New South Wales, Australia, there are many areas which are commonly known by regional names. Regions are areas that share similar characteristics. These characteristics may be natural such as the Murray River, the coastline, or the Snowy Mountains. Alternatively, the characteristics may be cultural, such as a viticulture land use. New South Wales is divided by numerous regional boundaries, based on different characteristics. In many cases boundaries defined by different agencies are coterminous.