Friedrich Wilhelm Ehrenfried Rost (11 April 1768 – 12 February 1835) was a German theologian, philosopher and classical philologist.

He studied theology and philology at the University of Leipzig, receiving his doctorate in 1792.

In 1794 he served as a vespers minister at the university church, then relocated to Plauen as rector at the lyceum.

[1] From 1804 to 1809 he was a privat-docent of philosophy at the University of Leipzig, where afterwards, he served as an associate professor until his death in 1835.

He was a member of the Lateinischen Gesellschaft zu Jena and the Historisch-Theologischen Gesellschaft zu Leipzig.