Arturo Castiglioni (10 April 1874, Trieste â 21 January 1953, Milano) was an Austro-Hungarian Empire-born American medical historian and university professor.
Castiglioni grew up in Trieste, Austro-Hungarian Empire. In 1939, he emigrated to the States and became a professor at Yale University in New Haven, Connecticut. His brother was Camillo Castiglioni, an Italian-Austrian banker. Castiglioni was a member of the International Society for the History of Medicine.