August Hjelt (29 June 1862 in Tuusula – 12 July 1919 in Helsinki) was a Finnish politician. He was a member of the Senate of Finland. He belonged to the conservative Finnish Party. He was a member of the Diet of Finland in 1897 and from 1905 to 1906 and of the Parliament of Finland from 1907 to 1908 and again from 1910 to 1911. He was the younger brother of Edvard Hjelt.