John Henry Steenhuisen (born 25 March 1976) is a South African politician who has served as the leader of the Opposition since October 2019 and has been the federal leader of the Democratic Alliance since November 2020, having served as the interim leader for one year from November 2019. He was chief whip of the official opposition from May 2014 until October 2019. Ideologically, Steenhuisen has been described as a liberal, a supporter of non-racialism and a firm believer in racial equality.