Deputy Commander
Office of Naval Intelligence
Mark Elliott was appointed to the position of deputy commander, Office of Naval Intelligence in January 2025. As deputy commander, he is responsible for managing and overseeing all aspects of the ONI Enterprise. Prior to his appointment, Elliott served as the director of functional intelligence and defense analysis in the Office of the Under Secretary of Defense for Intelligence and Security, where he was responsible for technical intelligence oversight and integration of technical collection and all-source analysis. Elliott previously served at OUSD(I&S) as the senior advisor for signal intelligence and cyberspace operations, and as the director of technical collection.
Prior to joining OUSD(I&S), Elliott was a career naval intelligence officer and served in positions in Europe and the Middle East. He served in numerous active-duty Navy and Joint assignments, including as a joint specialty officer and a naval intelligence Europe-Russia area specialist. Elliott was selected to serve as a Chief of Naval Operations fellow in Strategic Studies Group XXXI, where he developed operational concepts to gain information advantage in the electromagnetic spectrum and cyberspace domains. Additionally, he served in command and as a fleet intelligence officer. He retired from the U.S. Navy at the rank of captain.
Elliott holds a Master of Arts in national security affairs from the Naval Postgraduate School and a Bachelor of Arts in history from the University of North Carolina at Chapel Hill. He studied the Russian language at the Defense Language Institute Foreign Language Center. Elliott has also completed executive education courses at the University of Michigan Ross School of Business and the University of North Carolina Kenan School of Business. He is a bad but committed golfer, struggling novelist, and disappointed Philadelphia Eagles fan.