First Nations people in the Northern Territory will have greater access to justice with the opening of an Administrative Review Tribunal (ART) in Darwin.

The $3.6 million federal announcement means Territorians will no longer have to travel 3000km to Adelaide to access the tribunal, with Darwin currently the only Australian capital city without an ART registry.

The ART offers independent services for people who seek an independent review of government decisions, including whether they qualify for an age pension, can receive child support, or are compensated or can receive NDIS funding.

Attorney-General Mark Dreyfus KC said the ART is the "most significant reform to Australia's system of administrative review in decades".

"The opening of the Darwin Registry and First Nations support services demonstrates the Albanese government's commitment to provide all Australians with a modern, fit for purpose system of administrative review."

Noting Indigenous Territorians face significant barriers to accessing justice, the government said they had committed $2.6 million for a First Nations Liaison Officer program to offer better targeted support, as well raise awareness of the availability of ART to for merits reviews of government decisions.

"Territorians deserve to have improved access to justice and independent reviews of government decisions, no matter where they live," Minister for Indigenous Australians, Malarndirri McCarthy, said.

"These investments... will also help increase awareness among First Nations Territorians about merits review and available support."

Federal member for Solomon Luke Gosling said the local ART funding would ensure all Australians had the full range of services they deserved — "no matter where they live."

"The opening of the Darwin Registry will make it easier for Territorians to access independent reviews of government decisions, reducing the need for long-distance, often expensive travel to other states," he said.

The federal government has revamped the ART, with legislation passing parliament last year to replace the Administrative Appeals Tribunal (AAT), which they argued had been filled with Liberal appointees.

"The AAT's public standing was irreversibly damaged as a result of the former government's appointment of as many as 85 former Liberal MPs, failed Liberal candidates, former Liberal staffers and other close Liberal associates without any merit-based selection process," Mr Dreyfus said last year.

"The former government fatally compromised the AAT, undermined its independence, and eroded the quality and efficiency of its decision-making."