A field experiment was carried out at the Agronomy Experimental Farm, Faculty of Agriculture, Assiut Univ., during 2017/2018 and 2018/2019 seasons, to investigate the impact of humic acid and nitrogen fertilization on productivity of some bread wheat cultivars. Experimental design was randomized complete block design (RCBD) using strips plot arrangement with three replications, where the three humic acid [0 (control), humic acid 2 g/L. and humic acid 4 g/L. i.e. H₀, H₁ and H₂)] were assigned horizontally; three nitrogen fertilization rates (50, 75 and 100 kg N/fed. i.e. N₁, N₂ and N₃) were allocated main vertically and three wheat cultivars (Sids 12, Gemmeza 11 and Misr 1 i.e. Cv₁, Cv₂ and Cv₃) were allocated in the sub-plots.