Johann Heß (or Hess) (23 September 1490 – 5 January 1547) was a German Lutheran theologian and Protestant Reformer of Breslau.
In Wittenberg he became a follower of Martin Luther, and stayed in touch with the Protestant Reformation when he relocated to Neisse (Nysa) in 1513 as the secretary of Johannes V. Thurzo, bishop of Breslau.
In 1520 he was ordained to the priesthood and in 1523 Heß was pressed by the city council of Breslau (probably at the instigation of Laurentius Corvinus) to become pastor of St. Maria Magdalena church.
His careful approach even normalized the relationship with Catholic bishop Jakob von Salza.
Theologically, he, Ambrosius Moibanus, pastor of St. Elisabeth church, and the city council of Breslau sided with Wittenberg and opposed Caspar Schwenckfeld and his followers in Liegnitz (Legnica).