Objectives: The objectives of this research were to study antioxidant activity of leaves extract from four varieties of mangoes using two methods of antioxidant testing which were DPPH (2.2-diphenyl-1-picrylhydrazyl) and ABTS (2.2’-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid)) and correlation of total phenolic, flavonoid and carotenoid content in various extracts of four varieties mangoes with DPPH and ABTS scavenging acivities