Heinrich Friedrich Hackmann (born August 31, 1864 in Osnabrück, Germany, July 13, 1935 ) was a German Protestant theologian, religious historian and sinologist .
After studying in Leipzig and Göttingen, he became a private tutor in Göttingen in 1893. Hackmann was pastor of the German parish in Shanghai from 1894 to 1904, and pastor of the German church in Denmark Hill, London, from 1904 onwards. From 1913 to 1934 he was full professor of religious history at the University of Amsterdam .