Mengistu Haile Mariam
 Mengistu Haile Mariam (Amharic: መንግስቱ ኃይለ ማርያም?</span> pronounced [mənɡɨstu haɪlə marjam]; born 21 May 1937) is an Ethiopian politician who was the most prominent officer of the Derg the Communist military junta that governed Ethiopia from 1974 to 1987 and the President of the People's Democratic Republic of Ethiopia from 1987 to 1991.