- Kura-Araxes culture (3400 - 2000 BC)
- Assyria (2500 - 609 BC)
- Akkadian Empire (2334 - 2154 BC)
- Mannaeans (10th century - 7th century BC)
- Neo-Assyrian Empire (911 - 609 BC)
- Urartu kingdom (860 - 590 BC)
- Median dynasty (678-549 BC)
- Achaemenid Empire (550 - 330 BC)
- Greco-Persian Wars (499 - 449 BC)
- Zoroastrianism established (5th century BC)
- Alexander the Great and Macedonia conquer Persian Empire (331 BC)
- Roman-Parthian Wars (54 BC - 217 AD)
- Parthian Empire (247 - 224 AD)
- Sasanian Empire (224-651 AD)
- Byzantine-Sasanian War (602 - 628 AD)
- Islamic conquest of Persia (633 - 654 AD)
- Umayyad Caliphate (661 - 750 AD)
- Abbasid Caliphate (750 - 1517 AD)
- Islamic Golden Age (8th century - 14th century AD)
- Samanid Empire (819 - 999 AD)
- Ghaznavid Empire (977 - 1186 AD)
- Seljuk Empire (1037-1194)
- Anushtegin dynasty (1077-1260)
- Mongol conquest of Central Asia (1216-1222)
- Ilkhanate (1256-1335)
- Timurid Empire (1370-1507)
- Safavid dynasty (1501-1736)
- Afsharid dynasty (1736-1796)
- Zand dynasty (1751-1794)
- Qajar dynasty (1796-1925)
- First Russo-Persian War (1804-1813)
- Second Russo-Persian War (1826-1828)
- Great Persian famine (1870-1872)
- Persian Cossack Brigade (1879-1921)
- Persian Constitutional Revolution (1905-1911)
- Persian coup d'état (1921)
- Pahlavi Iran (1925-1979)
- Germany invades Iran (1941)
- Anglo-Soviet invasion of Iran (1941)
- Iranian coup d'état (1953)
- Iranian Revolution (1978-1979)
- Iran hostage crisis (1979)
- Ruhollah Khomeini is Supreme Leader (1979-1989)
- Iran-Iraq War (1980-1988)
- Ali Khamenei is Supreme Leader (1989 - now)
- Iranian Green Movement (2009)
(This post includes any nation or civilization that occupied at least a portion of Iran at some point. Unless specified otherwise, the dates correspond to when a nation or civilization existed, but do not necessarily correspond to occupation of Iran.)
