Stengel is a surname. Notable people with the surname include:
Alfred Stengel (1868–1939), American surgeonCasey Stengel (1890–1975), American Major League Baseball player and managerChristian Stengel (1903-1986), French film directorE. Stengel, translator of Sigmund Freud's works from German to EnglishHenri Christian Michel de Stengel (1744–1796), General in the French Revolutionary WarsHermann von Stengel (1837–1919), Bavarian administrator, German politician and Finance MinisterIsaiah Stengel, birth name of Isaiah Shachar, Israeli historianKilien Stengel (born 1972), French gastronomic author, and a teacher of gastronomyLawrence F. Stengel (born 1952), United States federal judgeRichard Stengel, American editorWerner Stengel (born 1936), German roller coaster designer and engineer