Johann August Nösselt (2 May 1734, in Halle an der Saale – 11 March 1807) was a German Protestant theologian.
Beginning in 1751, he studied theology at the University of Halle, where one of his instructors was Siegmund Jakob Baumgarten (1706-1757).
In 1755-56 he took an extended study trip throughout Germany, Switzerland and France, eventually returning to Halle, where in 1760 he became an associate professor of theology.
Nösselt was in alliance with the popular Age of Enlightenment philosophy of his era, and is considered to be a significant representative in regards to the departure from 18th-century Protestant Pietistic orthodoxy and its rigid grammatical and historical interpretation of Biblical scripture.
Other noted works by Nösselt include: From 1776 to 1790 he was publisher of the newspaper Hallischen gelehrten Zeitung.