Heinrich Bernhard Oppenheim (July 20, 1819 in Frankfurt – March 29, 1880 in Berlin) was a German publicist and philosopher concerned with the ideas of liberalism, free trade and international law. Oppenheim was son of a Jewish family of bankers in Frankfurt and studied law in Göttingen, Heidelberg and Berlin. In Berlin he could not reach a postdoctoral lecturer qualification because of his Jewish origin, so he became a private lecturer (Privatdozent) for political science and international law in Heidelberg.But his inclinations to journalism soon won the upper hand, and, his living assured by his family, he gave up teaching.