The Munga-ThirriâÂÂSimpson Desert Regional Reserve (formerly Simpson Desert Regional Reserve) was a protected area located in the Australian state of South Australia within the gazetted locality of Simpson Desert. The regional reserve's name was altered on 2 August 2018 by the Government of South Australia. The regional reserve was classified as an IUCN Category VI protected area.
it was merged with the Munga-ThirriâÂÂSimpson Desert Conservation Park to create the Munga-ThirriâÂÂSimpson Desert National Park.