Steininger is a surname. Notable people with the surname include:
Eva Steininger-Bludau (1951–2022), German politician Jeffree Star (Jeffrey Steininger; born 1985), American internet personality Daniel Steininger (born 1995), German footballer Ferdinand Steininger (1882–1959), German printmaker Franz-Josef Steininger (born 1960), German footballer Michel Steininger (born 1935), Swiss fencer Rolf Steininger (born 1942), German historian