Frederick H. Fleitz, Jr. (born February 24, 1962) is a former U.S. government official, serving since January 2022 as Vice Chairman of the America First Policy Institute Center for American Security. He previously served as the Chief of Staff and Executive Secretary of the National Security Council from May through October 2018, during the administration of U.S. President Donald Trump. Fleitz is a former CIA analyst, and news commentator.