| 110821 | September 27 | Birth | 1992 – Granit Xhaka, Swiss footballer |
| 110822 | September 27 | Birth | 1993 – Lisandro Magallán, Argentinian footballer |
| 110823 | September 27 | Birth | 1993 – Patrick Mölleken, German actor |
| 110824 | September 27 | Birth | 1993 – Mónica Puig, Puerto Rican tennis player |
| 110825 | September 27 | Birth | 1993 – Vinnie Sunseri, American football player |
| 110826 | September 27 | Birth | 1994 – Cindy Bruna, French model |
| 110827 | September 27 | Birth | 1995 – Lina Leandersson, Swedish actress |
| 110828 | September 27 | Birth | 1995 – Anderson Lim, Bruneian swimmer |
| 110829 | September 27 | Birth | 1996 – Princess Iman bint Abdullah of Jordan |
| 110830 | September 27 | Birth | 2011 – Giorgi Bagrationi, Spanish-Georgian son of David Bagration of Mukhrani |
| 110831 | September 27 | Death | 1249 – Raymond VII, Count of Toulouse (b. 1197) |
| 110832 | September 27 | Death | 1404 – William of Wykeham, English bishop (b. 1320) |
| 110833 | September 27 | Death | 1557 – Emperor Go-Nara of Japan (b. 1497) |
| 110834 | September 27 | Death | 1590 – Pope Urban VII (b. 1521) |
| 110835 | September 27 | Death | 1651 – Maximilian I, Elector of Bavaria (b. 1573) |
| 110836 | September 27 | Death | 1660 – Vincent de Paul, French priest and saint (b. 1581) |
| 110837 | September 27 | Death | 1674 – Thomas Traherne, English priest, poet, and theologian (b. 1637) |
| 110838 | September 27 | Death | 1700 – Pope Innocent XII (b. 1615) |
| 110839 | September 27 | Death | 1719 – George Smalridge, English bishop (b. 1662) |
| 110840 | September 27 | Death | 1730 – Laurence Eusden, English poet and author (b. 1688) |
| 110841 | September 27 | Death | 1735 – Peter Artedi, Swedish ichthyologist and zoologist (b. 1705) |
| 110842 | September 27 | Death | 1737 – John Sidney, 6th Earl of Leicester, English politician, Lord Lieutenant of Kent (b. 1680) |
| 110843 | September 27 | Death | 1742 – Hugh Boulter, Irish archbishop (b. 1672) |
| 110844 | September 27 | Death | 1783 – Étienne Bézout, French mathematician and theorist (b. 1730) |
| 110845 | September 27 | Death | 1832 – Karl Christian Friedrich Krause, German philosopher and author (b. 1781) |
| 110846 | September 27 | Death | 1833 – Ram Mohan Roy, Indian humanitarian and reformer (b. 1772) |
| 110847 | September 27 | Death | 1838 – Bernard Courtois, French chemist and pharmacist (b. 1777) |
| 110848 | September 27 | Death | 1876 – Braxton Bragg, American general (b. 1817) |
| 110849 | September 27 | Death | 1886 – Charles Gordon Greene, American journalist and politician (b. 1804) |
| 110850 | September 27 | Death | 1891 – Ivan Goncharov, Russian author and critic (b. 1812) |