Mark Lance earned a Ph.D. from the University of Pittsburgh, and held a three year post-doctoral fellowship at Syracuse University. He is currently a Professor at Georgetown University in both the philosophy department and the Program on Justice and Peace.

Professor Lance works mostly in the areas of philosophy of language, epistemology, philosophical logic, and metaphysics, but writes as well on pragmatism, feminism, meta-ethics, the foundations of mathematics, anarchist theory and applied issues of social justice activism. He has published over 30 articles and two books on such topics as relevance logic, normativity, meaning, Bayesianism, and sexual identity. He is currently writing books on anarchism and rational community, understanding, defeasible laws (with Margaret Little), and the pragmatics of social authority (with Rebecca Kukla), as well as articles on such topics as the foundations of set theory, and consensus decision making. His most recent book is 'Yo!' and 'Lo!': the pragmatic topography of the space of reasons, co-authored with Rebecca Kukla, which was recently published by Harvard University Press.

Outside of philosophy, Prof. Lance is an activist, organizer, and frequent speaker on issues of social justice.