- Sep 5 Louis Bouwmeester, Dutch actor (Shakespeare), born in Middelharnis, Netherlands (d. 1925)
- Sep 7 Johannes Zukertort, German chess player, born in Lublin, Russian Empire (d. 1888)
- Sep 13 John H. Bankhead, U.S. Senator from Alabama, born in Moscow, Marion County, Alabama (d. 1920)
- Sep 13 Ödön Mihalovich, Hungarian composer, born in Fericsánci, Slavonia (d. 1929)
- Sep 20 James Dewar, Scottish chemist and physicist (Dewarfles/cordiet), born in Kincardine-on-Forth, Scotland (d. 1923)
- Sep 21 Abdul Hamid II, 34th Sultan of the Ottoman Empire (1876-1909), born in Topkapı Palace, Istanbul, Ottoman Empire (d. 1918)
- Sep 23 Karl Munzinger, Swiss conductor and composer, born in Balsthal, Switzerland (d. 1911)
- Sep 27 Alphonse François Renard, Belgian geologist, born in Ronse, Belgium (d. 1903)
- Sep 29 Louis J. Weichmann, American clerk who was the chief witness in the trial of the assassination of Abraham Lincoln, born in Baltimore, Maryland (d. 1902)