Niehaus is a German surname, meaning "new house" in a Low German dialect. Notable people with the surname include:
Bernd H. Niehaus Quesada (born 1941), Costa Rican lawyer and diplomatCarl Niehaus (born 1959), South African politician and diplomatCharles Henry Niehaus (1855–1935), American sculptorDave Niehaus (1935–2010), American sportscasterDick Niehaus (1892– 1957), American baseball playerEd Niehaus, American businessman and publicistFrank Niehaus (1902-1985), American football player (American football)Jutta Niehaus (born 1964), German racing cyclistLennie Niehaus (born 1929), American saxophonist, arranger, and composerRena Niehaus (born 1954), German actressRuth Niehaus (born 1925), German actressSteve Niehaus, American football player (American football)Tom Niehaus (born 1957), American politicianValerie Niehaus (born 1974), German actress