Spengler is a German-language occupational surname, literally meaning "metal worker" or "tin knocker". It may refer to:
Alexander Spengler (1827–1901), the first Davos doctor specializing in tuberculosis Andreas Spengler (born 1947), German psychiatrist and researcher Bruno Spengler (born 1983), a Canadian racecar driver Carl Spengler (1860–1937), Swiss physician Christine Spengler (born 1945), French war photographer Dagmar Spengler (born 1974), German cellist Daniel Spengler (born 1966), Swiss handball player Egon Spengler, character from the Ghostbusters films Pheobe Spengler, character from the Ghostbusters films Fritz Spengler (1908–2003), German field handball player Hans Spengler (1917–2003), Swiss footballer Horst Spengler (born 1950), West German handball player Jeronimus Spengler (1589–1635), Swiss glass painter John Spengler, the Akira Yamaguchi Professor of Environmental Health and Human Habitation at Harvard T.H. Chan School of Public Health Jörg Spengler (1938–2013), German sailor Joseph J. Spengler (1912–1991), American economist, statistician and historian of economic thought Lazarus Spengler (1479–1534), German Protestant Reformer Lorenz Spengler (1720–1807), Swiss-born Danish decorative artist and naturalist Lukas Spengler (born 1994), Swiss cyclist Oswald Spengler (1880–1936), German author, writer of The Decline of the West Pierre Spengler (born 1947), French film producer Tilman Spengler (born 1947), German sinologist, writer, and journalist Volker Spengler (1939–2020), German actor William Spengler (1889–1979), American boxer Spengler, pen name of David P. Goldman
See also Spengler Cup, an ice hockey tournament in Switzerland