Hans Gerhard Gräf (1864–1942) was a German Goethe specialist. Gräf was born on 5 May 1864 in Weimar. He was essential in preparation of the authoritative 1887-1919 Weimar complete edition of the works of Johann Wolfgang von Goethe (also known as the Sophie edition). Gräf was primarily responsible for editing Goethe's journals and excerpting anthologies of journal entries. In 1916 Gräf also edited Goethe's correspondence with Goethe's mistress and wife, Christiane Vulpius. Gräf also published two volumes of his own poetry – the second lasting two print runs