Ronald Patrick "Ron" Clark (born 15 August 1966) a United States Army lieutenant general who serves as the senior military assistant to the United States Secretary of Defense. He previously commanded the United States Army Central from from 2021 to 2022. He also served as the Chief of Staff, United States Indo-Pacific Command. He previously served as the commander of the 25th Infantry Division, and, before that, as the Chief of Staff, United States Army Pacific.