Gillian L. L. Lester (born October 30, 1964) is the 15th Dean of Columbia Law School. She joined Columbia Law School on Jan. 1, 2015, as Dean and Lucy G. Moses Professor of Law. Previously, Lester was acting dean of the University of California, Berkeley School of Law where she had been a professor since 2006. Before that, she was a full professor at the School of Law of the University of California, Los Angeles.