Hagenauer is a surname of German origin. It may refer to the following people: Franz Hagenauer (1906–1986), Austrian sculptor Friedrich Hagenauer (1829–1909), Australian missionary Joachim Hagenauer (1941–2026), German information theorist and academic Johann Baptist von Hagenauer (1732–1811), Austrian sculptor Johann Georg von Hagenauer (1748–1835), Austrian architect Johann Lorenz von Hagenauer (1712–1792), Austrian merchant, landlord and friend of the Mozart family Karl Hagenauer (1898–1956), Austrian designer Nikolaus Hagenauer, German sculptor