Olivier Sylvain is a Senior Advisor to the Chair of the Federal Trade Commission in the United States. He is on leave from his appointment as a Professor of Law at Fordham University in New York City. His areas of scholarship include administrative law, information law, intermediary liability, and other information-economy related matters.

At Fordham, he has been the Director of the McGannon Center for Communications Research, the Academic Director of the Center for Law and Information Policy, and a research affiliate at the Center on Race, Law, and Justice. Sylvain was also a Karpatkin Fellow in the National Legal Office of the American Civil Liberties Union and a litigation associate at Jenner & Block, LLC, in Washington D.C.