Alexander Donat, also Aleksander Donat in Polish, (1905 – 16 June 1983) was a Holocaust survivor imprisoned at the Warsaw Ghetto and several Nazi concentration camps during the occupation of Poland by Nazi Germany in World War II. After the war, Donat, a chemist by training and journalist by profession, emigrated with his family to the United States, settling in New York City. As an eye witness to the Holocaust in Poland, he went on to write about his wartime experiences, collect documents, and publish the narratives of others.