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March 1922 caricature of Lupu, by Victor Ion Popa
Nicolae L. Lupu (November 4, 1876 – 1947) was a Romanian left-wing politician and social physician. Originally a leader of the Labor Party, which was joined with the Peasants' Party, Lupu served as Interior Minister in 1919–1920. He formed his own Peasants' Party–Lupu in 1927, and also steered the creation of a League Against Usury. His group became a dissident faction of the National Peasants' Party, and was reestablished, after World War II, as the Democratic Peasants' Party–Lupu.