Shellenberger is a surname of German origin. Its German spelling is Schellenberger. Notable people with the surname include:
Allen Shellenberger (1969–2009), American rock drummer Betty Shellenberger (1921–2019), American field hockey player and coach John S. Shellenberger (1839–1911), American Civil War Medal of Honor recipient Michael Shellenberger (born 1971), American writer, advocate of nuclear power, and self-described ecomodernist Susie Shellenberger, American motivational speaker, writer, and magazine editor
See also Schellenberger, a surname Schellenberg (disambiguation) Shallenberger, a surname