Two field experiments were carried out at the Research and Production Station, National Research Centre, Al - Nubaria district, El-Behaira Governorate, Egypt, during the two successive winter seasons 2013/2014 and 2014/2015.The aim of this study was to investigate the effect of humic acid (two levels (control and 20 mg/L)) and zinc foliar application (four levels of chelated zinc (0, 1.5, 3 and 4.5 g/L)) on yield, yield components and quality traits of two wheat cultivars (Seds-1 and Seds-13). The obtained results indicated that Seds-13 cultivar significantly surpassed Seds-1 in spikelet number per spike, grain yield/ spike, grain yield in kg/feddan (fed. = 4200 m2), harvest index, protein % and protein yield (kg/fed.). Humic acid foliar spray significantly surpassed without spray (control) in all studied characters except harvest index. Foliar application of 4.5 g/L zinc gave the best results for all studied characters. Cultivar Seds-13 sprayed by humic acid gave the highest values of grain, straw, biological and protein yields/fed. Meanwhile, Seds-13 under4.5 g/L zinc application gave the best values of grain yield/ spike and biological, straw and grain yields/fed. the interaction between humic acid (20 mg/L) and 4.5 g/L zinc recorded the highest values in most of studied characters. Seds-13 x humic acid (20 mg/L) x 4.5 g/L zinc gave the highest values of grain yield/ spike and biological, straw and grain yields/fed. protein % and protein yield/fed. while, Seds-1 x humic acid (20 mg/L) x 4.5 g/L zinc gave the highest values of plant height, straw yield/ teller and grain index.