The protected areas of the Northern Territory consists of protected areas managed by the governments of the Northern Territory and Australia and private organisations with a reported total area of 335,527 square kilometres (129,548 sq mi) being 24.8% of the total area of the Northern Territory of Australia.

Australia's National Reserve System (NRS) is a network of more than 10,000 Commonwealth plus state and territory protected areas which, in combination, on a national scale, protect more than 137 million hectares, greater than 17% of the continent, of unique biodiversity and most significant ecological landscapes for future generations. The aim of the NRS is protect the diversity of all native landscapes, flora and fauna across Australia through strategic habitat protection. It consists of public, indigenous and privately protected areas of land and inland freshwaters.