Mark Albert Robert Kleiman (born May 18, 1951) is an American professor, author, and blogger who deals with issues of drug and criminal justice policy. A professor of public policy at New York University, in 2015, Kleiman became the director of the Crime and Justice Program at NYU's Marron Institute of Urban Management. Kleiman is an expert in the field of crime and drug policy and is the author of several books in the field. Kleiman advises local, state, national, and international governmental bodies on crime control and drug policy. He is also the chairman of BOTEC Analysis Corporation, a consultancy that focuses on crime, drug policy, and urban development.
Born in Phoenix to a Jewish family, Kleiman grew up in Baltimore and attended the Baltimore public schools. He is a graduate of Haverford College and received a master's degree in public policy from the John F. Kennedy School of Government at Harvard University in 1977 and a Ph.D. in public policy, also from Harvard, in 1985.
Kleiman served for 18 years as a professor of public policy at the UCLA Luskin School of Public Affairs. He has also been a visiting professor at Harvard Law School and the University of Virginia Batten School of Leadership and Public Policy (2012), and the first Thomas C. Schelling Visiting Professor at the University of Maryland School of Public Policy (2006-2007).
He is now an emeritus professor at UCLA, a professor of public policy at New York University, and an adjunct scholar at the Center for American Progress.