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
Bruno Spengler (born 1983), a Canadian racecar driver
Jörg Spengler (born 1938), German sailor
Joseph J. Spengler (1912–1991), American economist, statistician and historian of economic thought
Lorenz Spengler (1720–1807), Swiss-born Danish decorative artist and naturalist
Oswald Spengler (1880–1936), German author, writer of The Decline of the West
Egon Spengler, a character from the Ghostbusters films
Pierre Spengler, a European film producer
Spengler, the pen name of David P. Goldman, columnist for Asia Times Online.
