- Sep 5 Gottfried Arnold, German theologist, historian and songwriter, born in Annaberg-Buchholz, Germany (d. 1714)
- Sep 15 Princess Sophia Dorothea of Celle, repudiated wife of future King George I of Great Britain, and mother of George II, born in Celle, Germany (d. 1726)
- Sep 16 Antoine Parent, French mathematician, born in Paris (d. 1716)