In this research Antioxidant activity of the floral branches of Stachys lavandulifolia growing in the wild in two areas of Iran were evaluated. 2,2-Diphenyl-1-picryl hydrazyl (DPPH) radical scavenging potential of the plant methanol extracts were evaluated as a measure of their antioxidant properties. In DPPH test, extracts of the plant (Kashan area: IC50=121±11 µg/ml and Borujen area: IC50=116±9 µg/ml) exhibited weak radical-scavenging activities in comparison with synthetic standard antioxidant BHT (IC50 = 22±1µg/ml). Low antioxidant activity of the plant extracts may bea consequence of their low phenolic compounds contents (Kashan area: 56.58 µg/mg and Borujen area: 61.30 µg/mg) reflected in the plant.