Ernst Frederic Detterer (1888, Lake Mills, Wisconsin – 1947, Chicago) was an American calligrapher, teacher, and typographer. He studied at Moravian College and the Pennsylvania Museum and School of Industrial Art where he took classes in lettering taught by Edward Johnston. From 1912–21 he taught wood-cut art, calligraphy and typography at Chicago Normal School. From 1921–31 he taught the history of printing at the School of the Art Institute of Chicago.