Steier is a surname. Notable people with the surname include:
Andreas Steier (born 1972), German engineer and politician Lisa Steier (1888–1928), Swedish ballerina and ballet master Lydia Steier (born 1978), American opera director Rick Steier (born 1960), American guitarist Jonathan J Steier (born 1988), American Engineer and Entrepreneur.
See also Sztajer, a transliteration into Polish