 The current study examined the impact of zinc oxide on the growth and nutritional content of tomato plants in calcareous soil conditions, finding that a 30 ppm foliar application significantly increased plant height, stem diameter, number of branches, leaves, flowers, fruit weight, and yield per plant, while also increasing total soluble solids, chlorophyll A and B. Vitamin C, flavonoids, carotenoids, and phenolics. However, the highest acidity was recorded in 10 ppm of zinc oxide while the lowest was measured in the control. Overall, the study suggests that foliar application of zinc oxide can enhance the nutritional components of tomato fruits in calcareous soil conditions. This article was authored by Hassan Sardar, Safina Naz, Shah Ghefejas, and others.