Abstract: Wind erosion is one of the major causes of sandy desertification in arid regions. Wind erosion is considered to be the main process of land degradation, crop damage and sedimentation. In this study, wind tunnel experiments were conducted to investigate the effect of nanoclay at three different application rates on soil wind erosion control. The nanoclay isolated from soils was dominant in montmorillonite clay. A sandy loam soil was applied, which was from the Segzi, Isfahan. The soils of this area are structurally unstable and these are highly erodible for most seasons. The soil samples were treated with three treatments: Untreated samples as control, nanoclay at a rate of 0.5 and 1.5 g L–1 were uniformly spread on the soil surface. The treatments were performed in the condition with wind velocity of 10 m sec–1 at 5.0 min, in three repetitions. The results showed that the content of soil erosion was significantly higher in control compared to the nanoclay treatments. The soil erosion content significantly decreased with the increase of nanoclay concentration and 97.4 and 100% decreased in 0.5 and 1.5 g L–1 in compared with control, respectively. The results showed that the mean weight diameter significantly increased in 0.5 g L–1 (0.403 mm) and 1.5 g L–1 (0.481 mm) in compared with control (0.345 mm). Also, the proportion of aggregates >1 mm significantly increased with the increase of nanoclay concentration.