Jennewein is a surname. Notable people with the surname include:
C. Paul Jennewein (1890–1978), German-born American sculptor Jim Jennewein, American screenwriter and writer Jim Jennewein (architect) (1929–2022), American architect Josef Jennewein (1919–1943), Austrian-German alpine skier and world champion Mimi Jennewein (1920–2006), American painter Thomas Jennewein, Austrian physicist
See also Jenewein