ABSTRACT: A field experiment conducted at Gilbana village, Southern El-Qantara Shark, North Sinai, Egypt. The aim of the study was to evaluate the role of olive mill wastewater and some natural conditioners (farmyard manure and K-Feldspar) in improving sandy soil properties. All the three used soil conditioners applied individually and in combination. The experimental design was Randomized Complete Block Design and the cultivated plant was sugarbeet. Results of the present study revealed that the application of all the studied treatments decreased pH and EC values, while increased organic matter content, as well as available N, P and K. On the other hand, such treatments increased microelements concentration of the investigated soil. Importantly, the combined treatment (Olive mill wastewater + Potassium feldspar + Farmyard manure) had the most effective treatment in the present study. Therefore, the application of such treatment to sandy soils is necessary to improve its properties.