- Sep 6 Moses Mendelssohn, German Jewish enlightenment philosopher (Haksalah), born in Dessau, Principality of Anhalt (d. 1786)
- Sep 22 George Wilhelm Gruber, composer
- Sep 25 Christian G. Heyne, German archaeologist, born in Chemnitz, Germany (d. 1812)
- Sep 27 Michael Denis, Austrian poet, bibliographer and lepidopterist, born in Schärding, Austria (d. 1800)