Eugene I. Kimmelman is an American attorney and consumer protection advocate who specializes in antitrust law. Since January 2021, Kimmelman has served as a senior advisor in the Department of Justice (DOJ). During the Obama administration, Kimmelman served within the DOJ as chief counsel of the Antitrust Division. Kimmelman was formerly the president and chief executive officer of Public Knowledge, a public advocacy group. Prior to this, Kimmelman worked at a variety of organizations, including the Consumers Union, the Consumer Federation of America, and Public Citizen.