Christophorus Plato Castanis (Greek: Χριστόφορος Πλάτων Καστανής; 1814–1866; also known as Christophoros Castanis or Castanes and Christoforos Kastanis or Kastanes) was an Ottoman Greek academic, author and classicist. Castanis was born at Livadia, Chios on 1 April 1814 and lived much of his life in the United States. He published an autobiography titled The Greek Exile in 1851, which told of his survival of the Chios massacre, his time in Ottoman slavery, and his emigration to America.