The Great Victoria Desert at 647,000 square km (220,000 square miles) is the largest desert in Australia.
The important point to remember is that several of the deserts in Australia are very large and extend over several states. The largest desert in Australia, overall, is the Great Victoria Desert, and this across both South Australia and Western Australia. The next largest desert that covers part of South Australia is the Simpson Desert, which reaches into the Northern Territory, Queensland and South Australia. The largest desert which is solely and entirely within South Australia is the Tirari Desert.
Australia's largest desert is the Great Victoria Desertin Western Australia. It has an area of 424,400 km2 (163,900 square miles). From east to west, it extends about 700km.
Uluru is not the name of a desert. It is the name given by the indigenous people of Australia to the large monolith in central Australia. The word 'Uluru' is said to mean 'great pebble', and it refers to a single land feature, not an entire desert. There is no desert anywhere called Uluru.
The Mojave Desert is the largest desert in California.
Antarctica has the largest desert.
== == The largest hot desert in the world is the Sahara, and it is located in Africa. The largest desert in the world is Antarctica.
The world's largest desert is not in Egypt, it is in Antarctica. The Sahara Desert of Egypt is the largest hot desert in the world but the second largest desert overall.
The Thar Desert is the largest desert in Pakistan. It is located on the border with India.
In Central Australia, at the eastern edge of the Gibson Desert, there is a sandstone horst, called Ayers Rock.
The Kalahari is the second largest desert in Africa.
The Antarctic Desert is the largest desert in earth.