Jonathan L. Zittrain (born December 24, 1969) is an American professor of Internet law at Harvard Law School and a faculty co-director of Harvard's Berkman Center for Internet & Society. Previously, Zittrain was Professor of Internet Governance and Regulation at the Oxford Internet Institute of the University of Oxford and visiting professor at the New York University School of Law and Stanford Law School. He is the author, most recently, of The Future of the Internet and How to Stop It; and co-editor of the book Access Denied.
Zittrain works in several intersections of the Internet with law and policy including intellectual property, censorship and filtering for content control and computer security. He also founded an organization that develops classroom tools.