Field experiment was conducted during the two growing seasons 2009 and 2010 to investigate the effect of salicylic acid and zinc foliar application on seed yield and yield components of mungbean under sandy soil conditions. The experiment was laid out in Randomized Complete Blocks Design (RCBD) using split-plot arrangement with three replicates. Four salicylic acid concentrations (0, 50, 100 and 150 ppm) were assigned to the main plots. While, four foliar application concentrations of zinc (0, 300, 400 and 500 ppm) were applied to the sub-plots. The results showed that foliar application of salicylic Acid (SA) enhanced significantly (p≤0.05) plant height, number of branches plant-1, number of pods plant-1, number of seeds pod-1, 1000 seeds weight, seed weight plant-1 and seed yield ha-1 as compared with control (untreated plants) and the superiority was due to the high SA concentration (150 ppm). Significant (p≤0.05) increases in all above mention traits were occurred with foliar application of zinc as compared with untreated plants. Furthermore, the highest values of these traits were registered at application of 500 ppm zinc which showed insignificant difference at application of 400 ppm zinc. Also, the results showed that the interaction between salicylic acid and zinc nutrient had a significant effect on all studied traits. Application of 150 ppm SA with 500 or 400 ppm zinc produced the highest significant seed yields ha-1.