Abstract: Wind erosion is a widespread phenomenon causing land degradation in arid regions. The capacity of nanoclay in soil erosion control has been assessed in wind tunnel experiments as a novel technology. To study the effect of nanoclay on stability of sandy soils against wind erosion, a laboratory research program was set up in wind tunnel. The soil samples were treated with distilled water as control and nanoclay at a rate of 2000 ppm were uniformly spread on the soil surface. The treatments were performed in the condition with wind velocity of 31.0, 55.2 and 67.3 km h–1. The results showed that soil volumetric water content at 300 kPa increased (about 18.9%) with application of nanoclay. There was a positive function between the erosion amount and soil moisture content in the treatment of soil with nanoclay. The soil erosion amount decreased (more 99%) with the application of nanoclay. The proportion of 0.25-2 mm fraction increased (2.5%) and the proportion of 0-0.25 mm fraction significantly decreased (74%) with use of nanoclay. As a result nanoclay is able to fixate the sand and it has ability to stabilize the soil structure, increase aggregation and of course decrease soil erosion.