Johann Baptist Weiß (1753-1800) was a German Benedictine monk, teacher and playwright.
Johann Baptist Weiß was born on 4 January 1753 in Wittichen, took his monastic vows on 6 June 1773 at St. Blaise Abbey in the Black Forest and was ordained as a priest in 1776.
He became a teacher of theology at the abbey.
On 21 June 1793 he gave the eulogy at the graveside of the abbot, Martin Gerbert.
In 1794, after the schools in Konstanz were taken over by the Benedictines of the anterior Austrian bishoprics, Pastor Weiß was entrusted with the post of apostolic prefect (Präfektstelle) at the grammar school there.