Ayatollah Ali Hoseini-Khamenei is the Supreme Leader for Iran.
The leader of Iran today is SYED ALI KHAMENAI
There have been many leaders of Persia, you need to be more specific
Khamenei
Iran has a president and vice president just like America.
Imam Khomeini
Ayatollah Alkhomeni
Saddam Hussein was the President of Iraq who invaded Iran during the Iran-Iraq War.
Reza Shah
An Ayatola is a religious leader in Iran.
Imam Khomeini
There was no leader before him Iran was a monarchy before the Islamic Republic and the king (natively called "Shah") was Mohammadreza Pahlavi.