Agaricus sylvaticus mushroom has been widely studied because of its high nutritional value and medicinal properties. The objective of this study was to evaluate the antioxidant potential of both alcoholic and aqueous extracts of Agaricus sylvaticus, and quantify their total polyphenol content. There is great antioxidant potential of aqueous, alcoholic and ethereal extracts of the Agaricus sylvaticus mushroom.