8. Patagonian Desert - 200,000 Square Miles. The Patagonian Desert is the largest desert in the South American nation of Argentina, occupying a land surface area totalling about 200,000 square miles. It is primarily located in Argentina, though it also extends into parts of Chile.
7. Great Victoria Desert - 220,000 Square Miles. The Great Victoria Desert is the largest desert in Australia, occupying about 220,000 square miles. It stretches from the Gawler Ranges of South Australia to the Eastern Goldfields region in Western Australia.
4. Arabian Desert - 900,000 Square Miles. The Arabian Desert is found in western Asia where it covers most of the Arabian Peninsula. It is one of the largest deserts on earth, with a land surface of about 900,000 square miles. It engulfs much of Yemen, the Persian Gulf, Oman, Jordan and Iraq.
Non-Polar Deserts. The rest of Earth's deserts are outside of the polar areas. The largest is the Sahara Desert, a subtropical desert in northern Africa. It covers a surface area of about 3.5 million square miles. A list of more than twenty of the largest non-polar deserts can be found below.