Ergun Poyraz (born 31 January 1963) is a best-selling and prolific Turkish author known for his controversial books about the ruling Justice and Development Party, the Islamic preacher Fethullah Gülen, and people associated with them. He is best known for his 2007 book Children of Moses, which accused Prime Minister Recep Tayyip Erdogan and his wife of being secret Jews and of cooperating with Israeli intelligence to undermine Turkish secularism.