Glen Asner is the Deputy Chief Historian for the Historical Office, Office of the Secretary of Defense. Dr. Asner joined the office in 2008 and soon thereafter became the Publications, Senior Historian, and Series Editor for the five-volume study, History of Acquisition in the Department of Defense.

Prior to joining the OSD Historical Office, Dr. Asner worked at the National Aeronautics and Space Administration, where he served successively as a historian in the headquarters history office, Executive Secretary for the International Space Station Advisory Committee, and then as the NASA Goddard Space Flight Center Senior Historian. He has also served as a contract historian on projects for the Hagley Museum and Library, the U.S. Department of Energy, and the U.S. Department of the Army.

Dr. Asner is the co-author of Origins of 21st Century Space Travel: A History of NASA's Decadal Planning Team and the Vision for Space Exploration,1999-2004 (NASA 2019). He has also published articles on defense R&D and acquisition policy, the organization of science and technology in the 20th century, and the societal impact of spaceflight. Dr. Asner received master's and doctoral degrees in History and Policy from Carnegie Mellon University and a B.A. in History from the University of Wisconsin, Madison.