El Cimarrón (The Runaway Slave) is a composition by the German composer Hans Werner Henze, written when the composer lived in Cuba in 1969-1970. It is subtitled Biographie des geflohenen Sklaven Esteban Montejo (Biography of the runaway slave Esteban Montejo), and is based around the autobiographical passages recounted by Montejo to Miguel Barnet in 1963.