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| Rank | Name | Area (in sq. km.) | Associated Country |
| 1. | Sahara | 94,00,000 | Algeria, Chad, Egypt, Eritrea, Libya, Mali, Mauritania |
| 2. | Arabian | 23,30,000 | Iraq, Jordan, Kuwait, Oman, Qatar, Saudi, Arabia, UAE., Yemen |
| 3. | Gobi | 12,95,000 | Mongolia, China |
| 4. | Kalahari | 9,00,000 | Angola, Botswana, Namibia, South Africa |
| 5. | Patagonian | 6,70,000 | Argentina, Chile |
| 6. | Great Victoria | 6,47,000 | Australia |
| 7. | Syrian | 5,20,000 | Syria, Iraq, Jordan, Turkey |
| 8. | Great Basin | 4,92,000 | USA |
| 9. | Chihuahuan | 4,50,000 | USA, Mexico |
| 10. | Great Sandy | 4,00,000 | Australia |
| 11. | Karakum | 3,50,000 | Turkmenistan |
| 12. | Colorado | 3,37,000 | USA |
| 13. | Sonoran | 3,10,000 | USA, Mexico |
| 14. | Kaijil Kum | 3,00,000 | Kazakhstan, Turkmenistan, Uzbekistan |
| 15. | Takamakan | 2,70,000 | China |
| 16. | Thar | 2,00,000 | India, Pakistan |
| 17. | Gibson | 1,56,000 | Australia |
| 18. | Simpson | 1,45,000 | Australia |
| 19. | Atacama | 1,40,000 | Chile, Peru |
| 20. | Mojave | 1,24,000 | USA |