Hennings is a surname. Notable people with the surname include:
Artur Hennings (1940–2003), German chess master Chad Hennings (born 1965), American football defensive lineman Emmy Hennings (1885–1948), German performer and poet Ernest Martin Hennings (1886–1956), American painter, member of Taos Society of Artists Fred Hennings (1895–1981), Austrian actor John Hennings (c. 1833–1898), theatrical scene painter in Australia Margit Hennings (born 1943), Austrian chess master Rouwen Hennings (born 1987), German football player Thomas C. Hennings Jr. (1903-1960), American politician, Congressional Representative and Senator from Missouri Andrew Hennings and Kate Hennings, fictional characters Sam Hennings, American Actor