Daimler Chrysler Berlin Prize — Associate professor David Poeppel, who holds joint appointments in the university's departments of linguistics and biology, won the 2004 Daimler Chrysler Berlin Prize awarded by the American Academy in Berlin. He is the first scientist to win this fellowship.
Dairy — See Turner Hall.
Deans, African American women — The first African American woman to serve as a dean of a college was Mary Frances Berry, interim provost for the Division of Behavioral and Social Sciences from 1974 to 1976. Lee Thornton served as the interim dean of the College of Journalism from 2008 to 2009, and Bonnie Thornton Dill became dean of the College of Arts and Humanities in August 2011.
Dingman Center for Entrepreneurship — Created in 1986 and named for alumnus Michael D. Dingman, who donated funds to the Robert H. Smith School of Business to create the center.
Dormitory, oldest — Calvert Hall, originally constructed in 1914, is the oldest dormitory on campus.
Duke's Tree — One of the campus's landmark trees, this massive, 76-year-old white oak (state tree of Maryland) was located across the street from the Memorial Chapel until August 2012, when it was taken down after suffering a secondary lightning strike and a borer infestation. Named after former university groundskeeper Jerome "Duke" Sellers.