Mark E. Ferguson III (born October 30, 1956) is a retired United States Navy admiral who last served as Commander, United States Naval Forces Europe, United States Naval Forces Africa and Allied Joint Force Command Naples. Ferguson previously served as the 37th Vice Chief of Naval Operations from August 22, 2011 to July 1, 2014. Prior to that, he served as the 55th Chief of Naval Personnel and Deputy Chief of Naval Operations (Manpower, Personnel, Training & Education). He also served as chief of legislative affairs and assistant commander for distribution, Navy Personnel Command. He retired from active duty on July 1, 2016.