Daniel Edwin Barker (born June 25, 1949) is an American atheist activist and musician who served as an evangelical Christian preacher and composer for 19 years but left Christianity in 1984. He and his wife Annie Laurie Gaylor are the current co-presidents of the Freedom From Religion Foundation, and he is cofounder of The Clergy Project. He has written numerous articles for Freethought Today, an American freethought newspaper. He is the author of several books including Losing Faith in Faith: From Preacher to Atheist.