Jean de Koven (1915 - 23 July, 1937) was an American ballet dancer and dance tutor from Boston, Massachusetts who was murdered in Paris, France in July 1937. She had been staying with her aunt, Ida Sackheim, in a hotel on the Left Bank, where she disappeared on the afternoon of 23 July Her body was discovered beneath the front porch of a villa at La Celle-Saint-Cloud on 8 December 1937. De Koven was the first of six victims of German-born serial killer Eugen Weidmann, also known as "Karrer", a gang leader who confessed to his crimes and had as many as nine accomplices.