Karl Wilhelm Ludwig Heyse (1797 Oldenburg - 1855 Berlin) was a German philologist, son of Johann Christian August Heyse, father of the novelist Paul Johann Ludwig von Heyse, born at Oldenburg. He studied Greek and Latin and became assistant professor of philosophy in Berlin in 1829. After his father's death (1829) he revised many of his father's works, especially the Allgemeines Fremdwörterbuch. His own works are: Handwörterbuch der deutschen Sprache (1833-49); Ausführliches Lehrbuch der deutschen Sprache (1838-49); and System der Sprachwissenschaft (edited by Steinthal, 1856).