Field experiments were carried out in two successive seasons of 2019 and 2020, Kafr El Sheikh Governorate, Egypt, to find out the effect of Zinc (Zn) application splits and rateswithout or with humic acid (HA) on rice growth, grain yield and quality. The experiments were laid out in a split-plot based on Randomized Complete Block Design with three replications. Treatments included two application splits were applied in main plots and nine application rates; control (T₁), 100% (20 kg ZnSO₄.7H₂O fed.^-1) soil application traditional recommended fertilizer dose (RFD) (T₂), foliar Zn application rates of 12.5% (T₃), 25% (T₄) and 50% (T₅ ) from RFD, HA(T₆), foliar Zn application rates of 12.5% (T₇), 25% (T₈) and 50% (T₉) from RFD+HA were applied in sub-plots. Results indicated that, Zn application at three splits gave higher rice growth characters, yield components and grain quality than two splits. By increase zinc application rates without or with HA had a significant increase (P <0.05) in growth characters; the highest increase mean values of plant height (7.8%) and number of tillers m^-2 (16.5%) were at 25% RFD+HA while, LAI (22.3%) and chlorophyll content (15.8%)  were at 50% RFD+HA compared with control treatment. The highest panicle length (19.6 cm), panicle weight (2.29 g), number of filled grains panicle^-1 (104.9), grain yield (4.12 t fed^.-1),harvest index(47.9%), elongation percentage (32.6%) and head rice percentage (69.4%) recorded at Zn 50% RFD+HA as an average of both seasons.