This article reveals and studies the connections between Bentham's Defence of Usury (1787) and Saint-Amand Bazard (1791-1832), a founder of Saint-Simonianism. We first traces Bazard's exposure to Bentham through his unknown friendship with Bentham's publisher Etienne Dumont. After introducing in details the Saint-Simonian views on interest and money, we examines the significance of Bazard's translation of Defence of Usury and his shared opposition against usure laws. We explain why the puzzling reference to Benthamite utilitarianism is not fortuitous but appears to justify a common ground between Bentham's utilitarism and Saint-Simonianism. This connection did not survive the July Revolution.