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. In 1764 he attained the title of "full professor" at Halle. From 1776 to 1790 he was publisher of the newspaper Hallischen gelehrten Zeitung.