- August 3, 2005 - Mahmoud Ahmadinejad takes office as the 6th President of Iran.
- August 19, 1953 – Cold War: The CIA helps to overthrow the government of Mohammed Mossadegh in Iran, and retain Shah Mohammad Reza Pahlavi on the throne (see Operation Ajax).
- August 20, 1988 – The Iran–Iraq War ends, with an estimated one million lives lost.
- August 25, 1941 – WWII: Operation Countenance begins with United Kingdom and Soviet forces invading Iran.
