This paper describes the results of laboratory study on pullout behavior of a polyester geogrid embedded in pond ash. The objective was to assess the feasibility of utilization of ash available in abundant quantity at thermal power plants as a fill material in reinforced soil structures (RSS). The ash does not satisfy the gradation requirements but satisfies the physical and shear strength properties recommended for use in RSS by FHWA and BS:8006. Pullout tests were then carried out as per ASTM D6706 at three normal stresses of 20 kPa, 40 kPa, and 80 kPa. The obtained results were then compared with those of geogrid embedded in reference fill material, Yamuna sand. The study reveals that although pond ash does not satisfy the gradation requirements of a suitable backfill material, the pullout resistance offered by geogrid embedded in pond ash was almost identical to that in sand. © 2019 American Society of Civil Engineers.