Otto Schoetensack (German: [ˈʃoːtənzak]; July 12, 1850 in Stendal – December 23, 1912 in Ospidaletto) was a German industrialist and later professor of anthropology, born of financial means. During an archeological dig, he oversaw the worker Daniel Hartmann who found the lower jaw of a hominid, the oldest human fossil then known, which Schoetensack later described formally as Homo heidelbergensis.