Frederick Bernays "Fritz" Wiener (1 June 1906 – 1 October 1996) was an American jurist specializing in military justice and constitutional law who became famous for the 1957 case of Reid v. Covert, which represents the only time a lawyer lost in the Supreme Court of the United States but prevailed on rehearing. That case was particularly notable in that it established that "no agreement with a foreign nation [i.e., no treaty] can confer power on the Congress, or on any other branch of Government, which is free from the restraints of the Constitution."