Allen Weinstein (September 1, 1937 – June 18, 2015) was an American historian, educator, and federal official. He served in several different offices. He served as the Archivist of the United States from February 16, 2005 until his resignation on December 19, 2008. After his resignation, he returned to the International Foundation for Electoral Systems as the election organization's senior strategist and to the University of Maryland as a history professor.