Nicholson is a locality in the Northern Territory of Australia located in the territory's east adjoining the border with the state of Queensland about south-east of the territory capital of Darwin.
The locality consists of the following land (from north to south, then west to east):
As of 2020, it has an area of .
The locality's boundaries and name were gazetted on 4 April 2007. Its name is derived from the Nicholson River which was named by the explorer Ludwig Leichhardt during his 1844/45 expedition after "Dr William Alleyne Nicholson of Bristol, England."
The 2016 Australian census which was conducted in August 2016 reports that Nicholson had a population of 60 people.
Nicholson is located within the federal division of Lingiari, the territory electoral division of Barkly and the local government area of the Barkly Region.