Events from the year 1989 in Iran.

• Supreme Leader: Ruhollah Khomeini (until June 3), Ali Khamenei (starting June 4)
• President: Ali Khamenei (until August 3), Akbar Hashemi Rafsanjani (starting August 3)
• Prime Minister: Mir-Hossein Mousavi (until August 3)
• Vice President: Hassan Habibi (starting September 1)
• Chief Justice: Mohammad Yazdii (until June 30), Mahmoud Hashemi Shahroudi (starting June 30)

• 3 June – Ruhollah Khomeini passes away and Ali Khamenei succeeds him the next day.
• 3 August – Ali Khamenei left as the president of Iran.

• Years in Iraq
• Years in Afghanistan