Aust is a surname. Notable people with the surname include:
Abner M. Aust (1921–2020), American air force officer
Charlie Aust (1942–2017), Rhodesian army officer
Dennis Aust, (born 1940), American baseball player
Kurt Aust (born 1955), Danish writer
Otto Aust (1892–1943), Swedish sailor
René Aust (born 1987), German politician
Stefan Aust (born 1946), German journalist





