Johann Hauler (9 October 1829 – 9 August 1888) was an Austrian educator and classical philologist born in Oberrimsingen, a district of Breisach, Germany.
He was the father of Edmund Hauler (1859–1941), a professor of classical philology at the University of Vienna.
After earning his doctorate in 1855 with the dissertation "De Theocriti vita et carminibus", he taught French and ancient languages at the "German gymnasium" in Ofen.
In 1860 he relocated to Vienna as Oberlehrer at the Theresianum, then held the same position at the Akademischen Gymnasium (from 1862).
It was edited and processed by a number of scholars, including his son, Edmund Hauler.