Heinrich Ratjen (20 November 1918 – 22 April 2008), born Dora Ratjen, was a German athlete who competed for Germany in the women's high jump at the 1936 Summer Olympics at Berlin, finishing fourth, but was later discovered to be male. In some news reports, he was erroneously referred to as Hermann Ratjen and Horst Ratjen.
Read more about Dora Ratjen: Early Life, Gender Revealed, Later Life and Confusion