Jonathan I. Blackman is a partner at Cleary Gottlieb based in the New York and London offices. His practice focuses on litigation, including international litigation and arbitration, securities law, banking and insurance law.

He has participated in numerous international arbitrations involving both public international law and complex commercial disputes, litigation involving the immunity of foreign states and their agencies under the U.S. Foreign Sovereign Immunities Act, and securities and commercial litigation in a variety of U.S. federal and state courts. Mr Blackman is heavily involved in representing a number of sovereigns in litigation in the United States and elsewhere, as well as representing corporate and other clients in actions in U.S. courts.

Mr Blackman has been recognized as a leading international litigation and arbitration practitioner by numerous publications including Chambers UK, The Legal 500, The American Lawyer, and The American Lawyer.

Mr Blackman joined the firm in 1977 and became a partner in 1985. From 1977 to 2009, he was resident in the New York office. Since then he has been resident in New York and London.