Fourteen leafy vegetables sold in Ekiti-State major markets, Nigeria were investigated for mineral composition, mineral safety index, mineral bioavailability, phytochemicals and non-starch polysaccharide contents using standard analytical procedures. The results (mg/kg) were: minerals: Na (17.8-47.4), K (146-435), Ca (20.8-53-0), Mg (99.0-283), Cu (0.015-0.083), Co (0.00012-0.03), Fe (2.6-8.07), Zn (0.671-1.52), Se (0.0001-0.002) and P (1.63-6.31). Mineral safety index showed that all the examined minerals were positive and would not overload the body of consumers. Phytochemical constituents (mg/100g) were (mg/100g): tannins (0.10- 0.390), phenolics (0.03-250), alkaloids (0.011-2.25), saponin (0.6-3.88), flavonoids (0.380-0.950), phytates (4.95-7.93), oxalates (0.230-0.590) and phytin phosphorous (1.39-2.23). [Ca]/[Phy], [Ca][Phy]/[Zn] and [Phy]/[Fe] were: 5.42-13.2, 0.17-1.32 and 0.63-1.73 respectively. Non-starch polysaccharide levels (%): NDF (4.65-11.2), ADF (3.33-9.31), lignin (1.40-4.26), cellulose (1.44-3.76) and hemicellulose (1.32-1.93). Significant differences existed among the Na, K, Ca, Mg, Ca/P, K/Na, Zn/Cu and milliequivalant ratio at P= 0.05 (Chi square, χ2 test) across the fourteen vegetable samples. Generally, they could be considered as potential sources of nutrients in human nutrition.