Abdulrahman Mohamed El-Sayed (born October 31, 1984) is an Egyptian American physician, epidemiologist, and public health advocate. He currently serves as Executive Director of the Detroit Health Department and Health Officer for the City of Detroit. At 31, he is the youngest health commissioner in a major US City. Previously, he was Assistant Professor in the Department of Epidemiology at Columbia University. He is an internationally recognized public health expert, and the author of over 100 scholarly articles, abstracts, and book chapters on public health policy, social epidemiology, and health disparities. His essays on public health policy have also been published in the New York Times, CNN, the Hill, the Huffington Post, the Detroit News, and the Detroit Free Press.