Allen Lee Sessoms (born November 17, 1946) is an American physicist, diplomat, and academic administrator. His scientific research focused on quarks and related subatomic particles at CERN and Harvard University. Sessoms worked in the United States Department of State for 12 years, rising to the position of deputy ambassador at the Embassy of the United States, Mexico City. He later served as president of Queens College, City University of New York, Delaware State University, and the University of the District of Columbia.