Daniel G. Fefferman (known as Dan Fefferman) is a church leader and activist for the freedom of religion. He is a member of the Unification Church of the United States, a branch of the international Unification Church, founded by Sun Myung Moon in South Korea in 1954. Fefferman has held several leadership positions in church related organizations. In the 1970s he was a leader of the National Prayer and Fast Committee, Project Watergate, and the Freedom Leadership Foundation, which were involved in political activism. In 1977 he testified before the Fraser Committee.