Margaretha Geertruida "Margreet" MacLeod (née Zelle; 7 August 1876 – 15 October 1917), better known by the stage name Mata Hari (/ˈmɑːtə ˈhɑːri/), was a Dutch exotic dancer and courtesan who was convicted of being a spy for Germany during World War I[1] and executed by firing squad in France.[2]