- September 8, 1978 – Iranian Army troops open fire on rioters in Teheran, killing 122, wounding 4,000.
- September 16, 1941 – Shah Reza Pahlavi of Iran is forced to resign in favor of his son Mohammad Reza Pahlavi of Iran, under pressure from the United Kingdom and the Soviet Union.
- September 22, 1980 – The command council of Iraq orders its army to "deliver its fatal blow on Iranian military targets," initiating the Iran–Iraq War.
