Emmerich Joseph von Breidbach zu Bürresheim (12 November 1707 – 11 June 1774) was the Archbishop-Elector of Mainz from 1763 to 1774 and Prince-Bishop of Worms from 1768 to 1774, in which capacities he was notable for introducing reforms inspired by the Enlightenment.

Anton Heinrich Friedrich von Stadion was associated with the introduction of Enlightenment-inspired reforms in the Archbishopric of Mainz.

Following the death of Johann Friedrich Karl von Ostein on June 4, 1763, the cathedral chapter of Mainz Cathedral elected Emmerich Joseph von Breidbach zu Bürresheim as Archbishop of Mainz on July 5, 1763.

Emmerich Joseph von Breidbach zu Bürresheim introduced several reforms during his time as Archbishop of Mainz.

In 1773, Pope Clement XIV issued the papal brief Dominus ac Redemptor, resulting in the Suppression of the Society of Jesus and as a result, the Society of Jesus, which had run Mainz's system of higher education, was expelled from the Archbishopric of Mainz.