Brett Markham

Chief of Staff at National Geospatial-Intelligence Agency

Mr. Brett Markham serves as the National Geospatial-Intelligence Agency’s Chief of Staff. In this role, he is a member of NGA’s executive leadership team and its third ranking officer responsible for daily agency operations. Mr. Markham oversees the Agency's executive support staff, administrative services, logistics, personnel security, human resources, employee training and development, corporate communications, and congressional engagement. He became NGA’s Chief of Staff on Apr. 27, 2020.



  • Chief of Staff

    Current role