The Brewarrina Local Aboriginal Land Council and the NSW Aboriginal Land Council are celebrating the resolution of the state's oldest land claim.

Lodged in 1984, the claim over the Brewarrina Common has been resolved by Aboriginal Land Agreement between Brewarrina LALC, NSWALC, and the NSW government almost 40 years to the day, it was announced on Monday.

In resolution of the oldest outstanding claim, a number of very culturally significant places, as well as lands for economic activation will be transferred to Brewarrina LALC.

NSW Aboriginal Land Council chairperson, Cr Raymond Kelly, said "this is a significant day for Aboriginal Land Rights in NSW".

"We are celebrating with all of Brewarrina. We look forward to working with Brewarrina LALC to deliver the tangible economic, social and cultural benefits that will flow from the return of these lands," he said.

Brewarrina Local Aboriginal Land Council chairperson Peter Gordon acknowledged the historical significance of resolving this long outstanding claim.

"The resolution of this claim, that dates back to the beginning of land rights, brings great satisfaction and pride to our Community. This achievement is a testament to the commitment and persistence of all those land rights legends who have gone before us. It's now our time to add to their legacy," he said.

NSW Minister for Lands Stephen Kamper said the return of "such an important area of land" to the people of Brewarrina will provide the Brewarrina community, the LALC and Shire "with certainty and a significant platform for cultural and economic outcomes".

The state's Minister for Aboriginal Affairs and Treaty, David Harris, highlighted the power of collaboration with Aboriginal community-controlled organisations.

"The resolution of the Brewarrina Common claim is the product of years of hard work and a strong partnership between the Government, Brewarrina LALC and NSWALC," Mr Harris said.

"The NSW government is committed to partnership and shared decision-making. When we work together on solutions, we are able to achieve real results to close the gap for Aboriginal people."