Schnackenberg is a surname of German origin, being a variant of the surname Schnackenburg. Notable people with the surname include:
Annie Schnackenberg (1835–1905), New Zealand missionary, temperance and welfare worker, and suffragist Elmer Jacob Schnackenberg (1889–1968), American judge Gjertrud Schnackenberg (born 1953), American poet Tom Schnackenberg (born 1945), New Zealand sailor and yacht designer Walter Schnackenberg (1880–1961), German painter and illustrator
See also Schnackenburg, a town in Lower Saxony, Germany Schnackenburg (surname)