# Timeline of Iranian history

The page details the timeline of History of Iran.

## 44th century BC

| Year | Date | Event |
| 4395 BC | | Construction of the city of Susa in southwestern Iran. |

## 33rd century BC

| Year | Date | Event |
| 3200 BC | | The Elamite civilisation, one of the four oldest civilisations (along with Mesopotamia, the Indus Valley, and Egypt), begins in the far west and southwest of modern-day Iran. |

## 21st century BC

| Year | Date | Event |
| 2000 BC | | Earliest date for the arrival of Aryans into Iran from Central Asia. The migrations into Iran may have been completed as late as 1000 BC. |

## 16th century BC

| Year | Date | Event |
| 1500 BC | | Start of the Avestan period, which according to some scholars continued until the sixth century BC. The prophet Zoroaster lived at some point during this era, with any time between 1500 BC and 1000 BC being the most favoured date for his life by modern scholars. |

## 13th century BC

| Year | Date | Event |
| 1250 BC | | Untash-Napirisha, king of Elam, builds the Chogha Zanbil ziggurat complex in present-day Khuzestan province. |
| 1210 BC | | Elamite Empire reaches the height of its power. |

## 8th century BC

| Year | Event |
| 770 BC | The Persians start driving the Elamites of Anshan towards Susa. |
| 727 BC | Deioces founds the Median government. |
| 705 BC | Birth of Achaemenes (died c. 675 BC), the eponymous ancestor of the Achaemenid dynasty. |

## 7th century BC

| Year | Event |
| 678 BC | Phraortes founds the Median Empire. |
| 655–638 BC | The Assyrian conquest of Elam occurs. The Neo-Assyrian Empire under Assurbanipal is victorious at the Battle of Susa in 647 BC, resulting in the looting and sack of Susa. |
| 633 BC | The Scythians invade Media. |
| 625 BC | Cyaxares the Great becomes the king of the Medes after Phraortes dies fighting the Assyrians. |
| 624 BC | The Medes under Cyaxares repel the Scythians. |
| 612 BC | Together with the Neo-Babylonian Empire, Cyaxares the Great sacks the Assyrian capital Nineveh and destroys the Neo-Assyrian Empire. |
| 600 BC | Cyrus I becomes king of Persia. |

## 6th century BC

| Year | Event |
| 585 BC | Cyaxares dies and is succeeded by his son Astyages. |
| 580 BC | Cyrus I dies and is succeeded by his son Cambyses I. |
| 559 BC | Cambyses I dies and is succeeded by Cyrus the Great as king of Persia. |
| 550 BC | The Achaemenid Empire is founded by Cyrus the Great after he overthrows and conquers the Median Empire. |
| 547 BC | Cyrus conquers the Lydian Empire in western Asia Minor. |
| 545–540 BC | Cyrus conquers Bactria, Arachosia, Sogdia, Sakastan, Chorasmia, and Margiana during his eastern campaign. |
| 539 BC | Cyrus conquers the Neo-Babylonian Empire, frees thousands of slaves in Babylon and issues a declaration of human rights. This would later be inscribed into the Cyrus Cylinder. |
| 535 BC | Cyrus commences the Achaemenid conquest of the Indus Valley. |
| 530 BC | Cyrus dies, and is succeeded by his son Cambyses II. |
| 525 BC | Cambyses II conquers Egypt after the Battle of Pelusium. Cyprus is also conquered by Cambyses. |
| 522 BC | Cambyses dies and is succeeded by either his brother Bardiya or an impostor, Gaumata, pretending to be Bardiya. This individual dies months after becoming the King of Kings, and is succeeded by Darius the Great. Civil war breaks out as a result of the mysterious circumstances surrounding Darius' ascension, with Persis, Elam, Media, Assyria, Babylonia, Egypt, Parthia, Armenia, Margiana, Sattagydia, Sagartia, Hyrcania, and Scythia all revolting. Darius suppresses all the uprisings by 520 and restores order to the Achaemenid Empire. |
| 518 BC | Darius completes the conquest of the Indus Valley. |
| 513 BC | Darius expands the Achaemenid Empire into Europe, conquering European Scythia, Thrace, Paeonia, and the coastal Greek cities. |
| 512 BC | Macedon submits to Persia. |

## 5th century BC

| Year | Date | Event |
| 490 BC | August/September | Battle of Marathon, Persian Empire is defeated by Greek states. |
| 486 BC | | Darius the Great dies; Xerxes I the Great succeeds him as King of Kings. |
| 484 BC | | The Babylonian Revolt, led by two pretenders to the Babylonian throne, is crushed by Xerxes. |
| 480 BC | | The Achaemenid Empire under Xerxes invades mainland Greece, reaching its greatest extent. |
| 480 BC–479 BC | | Persians capture and destroy Athens. The Acropolis, the Old Temple of Athena and the Older Parthenon are destroyed. |
| 465 BC | | Assassination of Xerxes I. Artaxerxes I becomes the King of Kings. |
| 404 BC | | Egypt breaks away from Persian rule. |

## 4th century BC

| Year | Date | Event |
| 343 BC | | Egypt is reconquered after the defeat of the Thirtieth Dynasty by Artaxerxes III. |
| 334 BC | | Alexander III of Macedon crosses the Hellespont into Asia. |
| 334 BC | May | Alexander III of Macedon defeats the armies of the Achaemenid Empire in the Battle of the Granicus river |
| 333 BC | 5 November | Alexander III of Macedon defeats the armies of the Achaemenid Empire in the Battle of Issus |
| 330 BC | 20 January | Alexander III of Macedon defeats the armies of the Achaemenid Empire in the Battle of the Persian Gate |
| 330 BC | July | Darius III, the last Achaemenid emperor is killed, bringing an end to the Achaemenid empire. |
| 330 BC | | Persepolis, the capital of the Persian Achaemenid Empire is destroyed by Alexander III of Macedon. |
| 323 BC | 10/11 June | Alexander III dies in Babylon, triggering a division of his empire among his generals in a treaty known as the Partition of Triparadisus. |
| 312 BC | | Seleucus I Nicator, establishes the Seleucid Empire in the Persian territories of the erstwhile Macedonian Empire. |

## 3rd century BC

| Year | Date | Event |
| 247 BC | | Arsaces I establishes the Parthian Empire (also known as the Arsacid Empire) in present-day north-eastern Iran. |

## 2nd century BC

| Year | Date | Event |
| 238 BC–129 BC | | Seleucid-Parthian Wars – the Arsacids expel the Seleucids from Iran and Mesopotamia, and those lands pass into their hands. |

## 1st century BC

| Year | Date | Event |
| 94 BC | | The Parthian Empire reaches its peak, stretching from the northern reaches of the Euphrates, in what is now central-eastern Turkey, to present-day Afghanistan and western Pakistan. |
| 54 BC | | Beginning of the Roman–Parthian Wars, lasting till 217 CE. |

## 3rd century

| Year | Event |
| 208 | Vologases V dies and is succeeded by his son Vologases VI. |
| 211 | Ardashir I establishes the Sasanian Empire in Istakhr in present-day Fars province. |
| 224 | Ardashir I defeats the last Parthian Shahanshah Artabanus IV, ending the Parthian Empire. |
| 260 | Persians defeated the Romans at the Battle of Edessa and take emperor Valerian prisoner for the remainder of his life. |

## 4th century

| Year | Event |
| 360 | Sasanian Empire captures the town of Singara, in the Siege of Singara (360) |
| 363 | Battle of Samarra (363) between the Roman Empire and the Sasanian Empire, in which Roman emperor Julian is wounded, and subsequently dies of his wounds. |
| 371 | Roman Empire and Kingdom of Armenia defeat the Sasanian Empire and Caucasian Albania in the Battle of Bagavan |

## 5th century

| Year | Date | Event |
| 421 | | Roman–Sasanian War of 421–422 after which Persian Empire agreed to tolerate Christianity and Roman Empire agreed to tolerate Zoroastrianism |

## 6th century

| Year | Date | Event |
| 570–578 | | Aksumite–Persian wars, Yemen is annexed by the Sasanian Empire. |
| 590 | | Khosrow II becomes ruler of the Sasanian Empire. During his rule till 628, Egypt, Jordan, Palestine and Lebanon are annexed into the Sasanian Empire |

## 7th century

| Year | Date | Event |
| 620 | | Sasanian Empire reaches its greatest height, encompassing all of present-day Iran and Iraq and stretching from the eastern Mediterranean (including Anatolia and Egypt) to Pakistan, and from parts of southern Arabia to the Caucasus and Central Asia. |
| 626 | June – July | Sasanian Empire lays siege to Constantinople, however is unable to capture it. |
| 628 | 25 February | Khosrow II is deposed and killed by his son Kavad II. |
| 628 | 6 September | Ardashir III becomes ruler of the Sasanian Empire. |
| 632 | 16 June | Yazdegerd III becomes ruler of the Sasanian Empire. |
| 633 | May | Battle of Ullais in which the Rashidun Caliphate defeats the Sasanian Empire resulting in the massacre of 70,000 Persians by Arabs. |
| 634 | October | Sasanian Empire led by Bahman Jaduya defeats the Rashidun Caliphate in the Battle of the Bridge. |
| 636 | | Arab invasion brings end of Sassanid dynasty and start of Islamic rule. |
| 636 | 16–19 November | Rashidun Caliphate defeats the Sasanian Empire in the Battle of al-Qadisiyyah, takes control of present-day Iraq. |
| 637 | | Destruction of the Ctesiphon library by Arabs of the Rashidun Caliphate. |
| 642 | | Rashidun Caliphate defeats the Sasanian Empire in the Battle of Nahavand, resulting in the near collapse of the Sasanian Empire. |
| 644 | 3 November | The second Rashidun caliph Umar ibn al-Khattab (r. 634–644) is assassinated by the Persian slave Abu Lu'lu'a Firuz. |
| 644 | 6 November | Uthman ibn Affan becomes the third Rashidun Caliph. During his reign, almost the whole of the former Sassanid empire's territories rebel from time to time, with major rebellions in Armenia, Azerbaijan, Fars, Sistan (in 649), Khorasan (651), and Makran (650). |
| 651 | | Rashidun Caliphate defeats the Sasanian Empire and the Göktürk Empire in the Battle of Oxus River. |
| 651 | | Yazdegerd III, the last Sassanid emperor, is killed near Merv putting an end to both his dynasty and to organized Persian resistance to Arab conquest. |

## 8th century

| Year | Event |
| 716–717 | Farrukhan the Great, ruler of Tabaristan in present-day Mazandaran province defeats the Muslim invasion under Yazid ibn al-Muhallab. |
| 761 | Tabaristan falls to Muslim invasion and becomes a province of the Abbasid Caliphate. |
| 767 | Ustadh Sis, Persian Zoroastrian revolutionary leader launches a rebellion, occupies Herat and Sistan before marching towards Merv. He initially defeats an Abbasid army under the command of al-Ajtham of Merv, but is himself defeated in a bloody battle against an army led by Muhammad ibn Abdallah. |

## 9th century

| Year | Event |
| 816–835 | Babak Khorramdin a Persian Zoroastrian revolutionary leader of the Khorram-Dīnân movement defeats successive Arab generals of the Abbasid Caliphate. |
| 821 | Tahir ibn Husayn, an Iranian general under the Abbasid Caliphate, declared the establishment of the independent Tahirid dynasty. |
| 867 | Ya'qub-i Laith Saffari founded the Saffarid dynasty. |
| 867 | One of the earliest works in Early New Persian is composed by Muhammad ibn Wasif (died 909), a poet and secretary of the Saffarids. |

## 10th century

| Year | Event |
| 934 | Sistan is conquered by the Samanid Empire. |
| 930 | Zoroastrian commander Mardavij establishes the Ziyarid dynasty and briefly conquers much of northern Persia before being betrayed and killed in 935 CE. The Ziyarid dynasty continued to rule over much of Tabaristan until its demise in 1090 CE. |
| 934 | The Buyid dynasty was founded. |

## 11th century

| Year | Date | Event |
| 1010 | | The poet Ferdowsi finished writing the epic poem Shahnameh, a touchstone of the modern Persian language. |

## 12th century

| Year | Event |
| 1131 | Death of the Persian poet Sanai. |
| 1136 | The Eldiguzid dynasty (also known as the Atabegs of Azerbaijan) is founded by Eldiguz. |
| 1157 | Death of the Seljuk sultan Ahmad Sanjar. |
| 1182/3 | Death of Rashid al-Din Vatvat, a secretary, poet, philologist in the Khwarazmian Empire. |
| 1189 | Third Crusade: Teutonic Knights destroyed several cities of the Middle East. As a result of the conflict, the safety of both Christian and Muslim unarmed pilgrims is guaranteed throughout the Levant. |
| 1195 | Death of the Persian poet Khaqani. |

## 13th century

| Year | Date | Event |
| 1219 | | The Mongol conquest of Khwarezmia begins after two diplomatic missions to Khwarezm sent by Genghis Khan are massacred. In 1220 and 1221, Bukhara, Samarkand, Herat, Tus and Nishapur were razed, and the whole populations were slaughtered. |
| 1220 | | Pursued by Mongol forces, Shah Muhammad II of Khwarezm dies on an island off the Caspian coast. |

## 16th century

| Year | Date | Event |
| 1501 | | Ismail I established himself in Tabriz and declared himself the king (shah) of Iran. |
| 1514 | 23 August | Battle of Chaldiran: The Ottoman Empire inflicted a severe defeat on a numerically inferior Persian force, opening the northwestern Iranian Plateau to their occupation. |
| 1514 | 7 September | The Ottoman sultan entered Tabriz. |
| 1514 | | A mutiny in the Ottoman army forced the sultan to withdraw. |
| 1524 | 23 May | Ismail died. He was succeeded by his son Tahmasp I. |
| 1590 | 21 May | The Treaty of Istanbul (1590) was signed between Safavid Empire and the Ottoman Empire ending the Ottoman–Safavid War (1578–1590), under which Safavid Empire ceded the Caucasus and western Iranian territories, for several years. |

## 17th century

| Year | Date | Event |
| 1603–1612 | | In the Ottoman–Safavid War (1603–1612), Shah Abbas the Great inflicts crushing defeats on the Ottoman Empire, restoring Safavid territory that had been lost. |
| 1609 | November | Battle of Dimdim: The Persian army laid siege to a Kurdish fortress on the banks of Lake Urmia. |
| 1610 | | Battle of Dimdim: The fortress was taken, and its occupants were massacred. |
| 1629 | 19 January | Abbas I of Persia died. His grandson Safi of Persia succeeded him. |
| 1639 | | The Treaty of Zuhab was signed between Persia and the Ottoman Empire, decisively partitioning the Caucasus between the two (with the greater part remaining Iranian,) and establishing what remains the border between Iran, Turkey, and Iraq. |
| 1642 | | Safi died. He was succeeded by Abbas II of Persia. |
| 1666 | | Abbas died. He was succeeded by Suleiman I of Persia. |

## 18th century

| Year | Date | Event |
| 1709 | 21 April | Mirwais Khan Hotak, the leader of the Ghilzai clan and mayor of Kandahar, killed the Persian-appointed governor George XI of Kartli and declared himself King of Persia. |
| 1722 | July | Russo-Persian War (1722-1723): A Russian military expedition sailed to prevent the territories in disintegrating neighboring Safavid Iran fall into Ottoman hands. |
| 1723 | 12 September | Treaty of Saint Petersburg (1723): The envoy of the shah signed a peace treaty ceding the cities of Derbent and Baku and the provinces of Shirvan, Guilan, Mazandaran and Astrabad to the Russian Empire. |
| 1746 | 4 September | The Treaty of Kerden was signed between the Ottoman Empire and Iran, reaffirming the border drawn in the Treaty of Zuhab and allowing Iranian pilgrims to visit Mecca. |
| 1795 | 11 September | Battle of Krtsanisi: The Persian army demolished the armed forces of Kartl-Kakheti, captured Tbilisi, and reconquered eastern Georgia, which comprised the territories of the Kartli-Kakheti. |
| 1796 | April | Persian Expedition of 1796: The tsarina of Russia launched a military expedition to punish Persia for its incursion into the Russian protectorate of Kartl-Kakheti. |

## 19th century

| Year | Date | Event |
| 1804 | | Russo-Persian War (1804-1813): Russian forces attacked the Persian settlement Ganja. |
| 1813 | 24 October | Russo-Persian War (1804–1813): According to the Treaty of Gulistan, the Persian Empire ceded all its North Caucasian and swaths of its Transcaucasian territories to Russia, comprising modern-day Dagestan, eastern Georgia, and most of the contemporary Republic of Azerbaijan. |
| 1826 | 16 July | Russo-Persian War (1826-1828): The Persian army invaded the recently Russian-annexed territories in order to reclaim the lost regions. |
| 1828 | 21 February | Russo-Persian War (1826–1828) Facing the possibility of a Russian conquest of Tehran and with Tabriz already occupied, Persia signed the Treaty of Turkmenchay; decisive and final cession of the last Caucasian territories of Iran comprising modern-day Armenia, the remainder of the Azerbaijan Republic that was still in Iranian hands, and Igdir (modern-day Turkey). |
| 1881 | 21 September | Persia officially recognized Russia's annexation of Turkmenistan in the Treaty of Akhal. |

## 20th century

| Year | Date | Event |
| 1906 | | The first Persian Constitution was adopted during the Persian Constitutional Revolution. |
| 1925 | | Reza Shah the Great overthrows the Qajar dynasty, becoming the first shah of the Pahlavi dynasty. |
| 1925 | 31 March | Solar Hijri calendar legally adopted in Iran. |
| 1941 | 25 August | Anglo-Soviet invasion of Iran: Three Soviet armies began invasion of Iran from the north, while British army invades Khuzestan and Central Iran. |
| 1945 | November | The Soviet Union established the Azerbaijan People's Government in Iranian Azerbaijan. |
| 1946 | 22 January | The Soviet-backed Kurdish Republic of Mahabad declared its independence from Iran. |
| 1946 | 2 March | Iran crisis: British troops withdrew from Iran. The Soviet Union violated its prior agreement and remained. |
| 1946 | 9 May | Iran crisis: The Soviet Union withdrew from Iran. |
| 1946 | 11 December | Iran regained control over the territory of the Azerbaijan People's Government. |
| 1946 | 15 December | Iran conquered Mahabad. |
| 1953 | August | Mohammad Mosaddegh is overthrown in a coup engineered by the British and American intelligence services. Fazlollah Zahedi is proclaimed as prime minister and the Shah returns. |
| 1979 | 11 February | Iranian revolution: The Iranian Monarchy collapsed in a popular revolution. |
| 1979 | 1 April | A referendum passed which made Iran an Islamic republic. |
| 1979 | 4 November | Iran hostage crisis |
| 1980 | 22 September | Iraq launched a full-scale invasion of Iran. The Iran–Iraq War would last until August 1988. The tactics used by both sides were similar to those used during World War I, including large-scale trench warfare with barbed wire stretched across trenches, manned machine-gun posts, bayonet charges, human wave attacks across a no-man's land, and extensive use of chemical weapons such as mustard gas by the Iraqi government against Iranian troops, civilians, and Iraqi Kurds. |
| 1981 | 9 October | Later Supreme Leader Ali Khamenei assumes office as the President of Iran under Supreme Leader Khomenei. |
| 1988 | 20 August | The Iran–Iraq War ends in a stalemate. The Iran–Iraq War was the deadliest conventional war ever fought between regular armies of developing countries. |
| 1988 | | Massacres of Iranian political prisoners, thousands of cases of forced disappearances, executions, torture and inhuman and degrading treatment. |
| 1989 | 3 June | 1st Supreme Leader of Iran and founder of the Islamic Republic, Ruhollah Khomeini, dies. |
| 1989 | 4 June | Ali Khamenei replaces Ruhollah Khomeini, becoming the second Supreme Leader of Iran. |
| 1989 | 28 July | A constitutional reform was allegedly approved by 97.6% of voters in a referendum, it was the first and so far only time the Constitution of the Islamic Republic of Iran has been amended. It made several significant changes to the system of government of the Islamic Republic such as eliminating the need for the Supreme Leader (rahbar) of the country to be a marja or chosen by popular acclaim. |
| 1989 | 16 August | Akbar Hashemi Rafsanjani becomes President of Iran, the first president to assume office under the post-reform constitution. |
| 1994 | 22 February | Homa Darabi an Iranian pediatrician and women's rights activist immolates herself in protest against compulsory hijab. |
| 1997 | 3 August | Mohammad Khatami replaces Rafsanjani as president. |

## 21st century

| Year | Date | Event |
| 2001 | 8 June | Iranian presidential election, 2001: President Mohammad Khatami was reelected with vast majority. |
| 2003 | December | 40,000 people are killed in an earthquake in southern Iran. |
| 2005 | 24 June | Iranian presidential election, 2005: Ahmadinejad defeated the more liberal Rafsanjani. |
| 2009 | 12 June | Iranian presidential election, 2009: Ahmadinejad re-elected for a second time after defeated Mousavi. |
| 2009 | 13 June | 2009–10 Iranian election protests: Protests in Iran over election results. |
| 2013 | 3 August | Hassan Rouhani replaces Ahmadinejad as president. |
| 2014 | | My Stealthy Freedom, an online movement in which women in Iran post photos of themselves without hijabs, as a protest against the compulsory hijab laws in the country. |
| 2015 | 14 July | Signing of Iran nuclear deal between Iran and the P5+1 (the five permanent members of the United Nations Security Council— China, France, Russia, United Kingdom, United States—plus Germany). |
| 2018 | 8 May | United States withdraws from the Iran nuclear deal |
| 2017–19 | | Iranian woman protest against compulsory hijab in multiple cities including Tehran, Kangavar, Isfahan and Shiraz. Many are physically assaulted with injuries including broken limbs and imprisoned. |
| 2019 | 9 September | Self immolation of women's rights activist Sahar Khodayari over six-month prison sentence for attempting to enter a public stadium to watch a football game, against the national ban against women at such events. Leads to widespread protests, and on 10 October 2019, more than 3,500 women attend the Azadi Stadium for a World Cup qualifier against Cambodia. |
| 2020 | 3 January | Quds Force commander Qasem Soleimani and commander of the Iran-backed Kata'ib Hezbollah militia, Abu Mahdi al-Muhandis, are assassinated in a U.S. drone strike in Baghdad. |
| 2021 | 3 August | Ebrahim Raisi replaces Rouhani as president. |
| 2022 | 16 September | 22-year-old Iranian woman Mahsa Amini, also known as Jina Amini, died in a hospital in Tehran, Iran, under suspicious circumstances, after her arrest by the Islamic Republic's Guidance Patrol. Eyewitnesses, including women who were detained with Amini, reported that she was severely beaten and that she died as a result of police brutality. Her death sparked widespread antigovernmental protests in Iran. |
| 2022–23 | | Civil unrest and protests against the Islamic Republic of Iran associated with the death in police custody of Mahsa Amini (Persian: مهسا امینی) began on 16 September 2022 and lasted until 2023. |
| 2024 | 1 April | Israel bombed the Iranian embassy in Damascus, causing a brief escalation to direct conflict between two countries which lasted for 18 days. |
| 2024 | 19 May | Varzaqan helicopter crash and death of Iranian president, Ebrahim Raisi. |
| 2024 | 28 July | Masoud Pezeshkian appointed as the president of Iran. |
| 2024 | 31 July | Assassination of Ismail Haniyeh, Hamas political leader in Tehran, by an apparent Israel attack, increased tension between the two countries. |