Johann Christian August Heyse (21 April 1764 in Nordhausen – 27 July 1829 in Magdeburg) was a German grammarian and lexicographer. He was the father of philologist Karl Wilhelm Ludwig Heyse (1797–1855), who edited and revised several of the elder Heyse's works.
From 1783 to 1786 he received his education at the University of Göttingen. He later was a schoolteacher in Oldenburg (from 1792), an academic rector in Nordhausen (from 1807) and a school director in Magdeburg (from 1819 until his death).
He is chiefly known for his work in the field of German school grammar. He wrote: