The Hartington City Hall and Auditorium, also known as the Hartington Municipal Building, is a city-owned, brick-clad, 2-story center in Hartington, Nebraska. It was designed between 1921 and 1923 in the Prairie School style by architect William L. Steele (1875–1949). Prairie School architecture is rare, and this rural Nebraska specimen is particularly unusual for being designed and built in the 1920s, subsequent to the Prairie Style's rapid loss of popularity after 1914.