Events on September 4
| Date | Type | Event |
|---|---|---|
| 4 September 973 | Births | (4 September) Muslim scholar and polymath, Abu Rayhan al-Beruni, was born in Beruniy, Khwarezm, Khorasan (now in modern-day Uzbekistan). |
| 4 September 1063 | Deaths | (4 September) The founder and the first Sultan of the Great Seljuk Empire, Tughril Beg, died in Rey, Iran. |