Brett A. Seidle

Dr. Brett Seidle has served as a member of the Senior Executive Service for nearly 10 years and has extensive experience in the private sector. He is performing the duties of Under Secretary of the Navy, which he assumed April 16, 2025. The Under Secretary of the Navy serves as the Chief Operating Officer and Chief Management Officer of the Department of the Navy (DON). Seidle is responsible for providing oversight and developing policy for defense and naval strategy, intelligence and intelligence-related activities, sensitive activities, special access programs, space activities, critical infrastructure, small business programs, and the naval audit service. Additionally, he is responsible for business operations, performance management, and risk management within the Department of Navy.