William J. Mitchell is director of the MIT Design Laboratory. Formerly dean of the School of Architecture and Planning and head of the Program in Media Arts and Sciences, both at MIT, he holds the Alexander W. Dreyfoos, Jr. (1954) Professorship and directs the Media Lab's Smart Cities research group.

Mitchell held leadership positions at the Harvard Graduate School of Design and UCLA's Graduate School of Architecture and Urban Planning. He taught at Yale, Carnegie Mellon, and Cambridge universities. His publications include Imagining MIT: Designing a Campus for the 21st Century (2007) and  Me++: The Cyborg Self and the Networked City (2003).

Mitchell holds a BArch from the University of Melbourne, an MED from Yale University, an MA from Cambridge and is a recipient of multiple honorary doctorates.