Moncure Daniel Conway (March 17, 1832 – November 15, 1907) was an American abolitionist minister. At various times Methodist, Unitarian, and a Freethinker, the radical writer descended from patriotic and patrician families of Virginia and Maryland but spent most of the final four decades of his life abroad in England and France, where he wrote biographies of Edmund Randolph, Nathaniel Hawthorne and Thomas Paine and his own autobiography.