David S. Mao

David S. Mao
Librarian of Congress
Acting October 1, 2015 – September 14, 2016
President	Barack Obama
Preceded by	James Billington
Succeeded by	Carla Hayden
Deputy Librarian of Congress
Incumbent
Assumed office January 12, 2015
Preceded by	Robert Dizard
Personal details
Born	New York City, New York, U.S.
Education	George Washington University (BA) Georgetown University (JD) Catholic University of America (MSLS)

David Mao is an American law librarian. Mao served as acting Librarian of Congress from September 30, 2015, until the confirmation of Carla Hayden in 2016.