David Winston RH (AHG) (born 1956) is an American herbalist and ethnobotanist. He has been in practice and teaching since 1977 and has written several books on the subject. Winston is a founding/professional member of the American Herbalists Guild, and is a founding advisory board member of United Plant Savers. He serves as visiting faculty at the Maryland University of Integrative Health (formally Tai Sophia Institute). He is the founder and dean of the Center for Herbal Studies.