Natana J. DeLong-Bas is senior research assistant at the Center for Muslim-Christian Understanding at Georgetown University. She is the author of Notable Muslims: A Biographical Dictionary (2004) and co-author of Women in Muslim Family Law revised edition, with John L. Esposito (2001). She has served as editor for and contributor to The Oxford Dictionary of Islam (OUP, 2003), and contributor to The Encyclopaedia of the Qur'an (2004), and The Encyclopedia of the Islamic World (OUP, 2004). She is a frequent public speaker on Islam, Wahhabism, and Saudi Arabia.