Karl Friedrich Heinrich (8 February 1774, in Molschleben – 20 February 1838, in Bonn) was a German classical philologist.
He studied under Christian Friedrich Wilhelm Jacobs and Johann Kaspar Friedrich Manso at the gymnasium in Gotha. From 1791 he studied theology at the University of Göttingen, where under the influence of Christian Gottlob Heyne, he changed his focus to philology. In 1804 he became a professor of Greek literature at the University of Kiel, then in 1818 relocated to the University of Bonn as a professor of classical philology. At Bonn, he served as director of the philological seminar.[1]