Paul Kurtz (; December 21, 1925 – October 20, 2012) was a prominent American scientific skeptic and secular humanist. He has been called “the father of secular humanism”. He was Professor Emeritus of Philosophy at the State University of New York at Buffalo, having previously also taught at Vassar, Trinity, and Union colleges, and the New School for Social Research.
Kurtz founded the publishing house Prometheus Books in 1969. He was also the founder and past chairman of the Committee for Skeptical Inquiry (CSI, formerly the Committee for the Scientific Investigation of Claims of the Paranormal, CSICOP), the Council for Secular Humanism, and the Center for Inquiry. He was editor in chief of Free Inquiry magazine, a publication of the Council for Secular Humanism.