When did the Kingdom of Armenia exist?

The Kingdom of Armenia existed 331/321 BC – AD 428. On this map it is drawn AD 1–59, 68–113, 154–160, 165–259, 287–370, 387–395, 402–438, 451–489, 638–646.

What was the capital of the Kingdom of Armenia?

The Kingdom of Armenia was ruled from Armavir, Yervandashat, Artaxata, Tigranocerta, Vagharshapat, Dvin.

Middle East · Antiquity

Kingdom of Armenia

Kingdom (at times client of Rome/Parthia; briefly an empire) · 331/321 BC – AD 428

The Kingdom of Greater Armenia (Mets Hayk) grew out of the Achaemenid Satrapy of Armenia, itself formed on the ruins of Urartu after the Median conquest of 590 BC. The Orontid (Yervanduni) dynasty ruled as Persian satraps for three centuries; after Alexander the Great destroyed the Achaemenid Empire at Gaugamela in 331 BC, Orontes III transformed the satrapy into an independent kingdom (formally by 321 BC), making Armenia one of the successor states of the Hellenistic world.

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Type: Kingdom (at times client of Rome/Parthia; briefly an empire)
Existed: 331/321 BC – AD 428
Shown on the map: AD 1–59, 68–113, 154–160, 165–259, 287–370, 387–395, 402–438, 451–489, 638–646 (9 periods)
Capital: Armavir, Yervandashat, Artaxata, Tigranocerta, Vagharshapat, Dvin
Peak area: ~219,000 km² (up to ~900,000 km² including vassals under Tigranes)
Region: Middle East

Origins & rise

History & key rulers

Weakened under Seleucid overlordship, the last Orontid was overthrown around 200 BC, and after Rome crushed Antiochus III at Magnesia (190/189 BC) the satrap Artaxias I founded the Artaxiad dynasty, reuniting the Armenian Highlands and building a new capital, Artaxata, on the Araxes. His descendant Tigranes II the Great (r. 95–55 BC) raised Armenia to brief imperial status: he absorbed Sophene, took Syria and Cilicia from the collapsing Seleucids (83 BC), and received the submission of Iberia, Albania, Atropatene and Arab tribes, building a new capital, Tigranocerta. Entanglement with his father-in-law Mithridates VI of Pontus brought Roman intervention — Lucullus took Tigranocerta in 69 BC and Pompey reduced Armenia to a client kingdom in 66 BC. Thereafter Armenia was the classic buffer between Rome and Parthia: the Treaty of Rhandeia (AD 63) installed the Parthian Arsacid Tiridates I, crowned by Nero in Rome, on the throne. Trajan briefly annexed Armenia (114–118), but the Arsacid line endured. Under Tiridates III (r. 298–330), converted by Gregory the Illuminator, Armenia in 301 (or c. 314) became the first state in history to adopt Christianity as its official religion.

Government, religion & culture

Armenia was a hereditary monarchy checked by powerful clan chiefs (nakharars), who held hereditary offices and commanded the famed heavy cavalry. Culture blended Iranian (Zoroastrian religion; gods Aramazd, Anahit, Mihr, Vahagn) with Hellenistic elements — Greek and Aramaic were court languages alongside Armenian. After the conversion of 301, the Armenian Apostolic Church became the pillar of national identity, and in AD 405 Mesrop Mashtots created the Armenian alphabet, launching a golden age of national literature.

Peak & territory

Under Tigranes, the Armenian Empire briefly stretched from the Caspian to the Mediterranean, incorporating Iberia, Albania, Atropatene, Cappadocia, Cilicia, Syria, Commagene, Sophene, Adiabene and parts of Mesopotamia — perhaps 900,000 km² with vassals. The durable kingdom of Greater Armenia proper comprised the fifteen provinces of the Armenian Highlands, around 219,000 km² (about 311,000 km² by some estimates c. AD 300), bordered by Iberia, Albania, Rome and Parthia.

Decline & legacy

Caught irreconcilably between Christian Rome and Zoroastrian Persia, Armenia was partitioned in 387 into a small Byzantine west and a Sasanian east (Persarmenia). In 428 the nakharars deposed the last Arsacid king, Artaxias IV, and Persarmenia passed to marzban governors — ending independent Armenian statehood until the Bagratid revival of 885. Yet the alphabet, the Church, and the memory of Tigranes sustained a distinct Armenian nation through a millennium of foreign rule; modern Armenia's statehood and the world's oldest national church trace directly to this kingdom.

Common questions

What was the Kingdom of Armenia?: The Kingdom of Greater Armenia (Mets Hayk) grew out of the Achaemenid Satrapy of Armenia, itself formed on the ruins of Urartu after the Median conquest of 590 BC. The Orontid (Yervanduni) dynasty ruled as Persian satraps for three centuries; after Alexander the Great destroyed the Achaemenid Empire at Gaugamela in 331 BC, Orontes III transformed the satrapy into an independent kingdom (formally by 321 BC), making Armenia one of the successor states of the Hellenistic world.
When did the Kingdom of Armenia exist?: The Kingdom of Armenia existed 331/321 BC – AD 428. On this map it is drawn AD 1–59, 68–113, 154–160, 165–259, 287–370, 387–395, 402–438, 451–489, 638–646.
What was the capital of the Kingdom of Armenia?: The Kingdom of Armenia was ruled from Armavir, Yervandashat, Artaxata, Tigranocerta, Vagharshapat, Dvin.
How large was the Kingdom of Armenia at its height?: Under Tigranes, the Armenian Empire briefly stretched from the Caspian to the Mediterranean, incorporating Iberia, Albania, Atropatene, Cappadocia, Cilicia, Syria, Commagene, Sophene, Adiabene and parts of Mesopotamia — perhaps 900,000 km² with vassals. The durable kingdom of Greater Armenia proper comprised the fifteen provinces of the Armenian Highlands, around 219,000 km² (about 311,000 km² by some estimates c. AD 300), bordered by Iberia, Albania, Rome and Parthia.
Who ruled the Kingdom of Armenia?: Weakened under Seleucid overlordship, the last Orontid was overthrown around 200 BC, and after Rome crushed Antiochus III at Magnesia (190/189 BC) the satrap Artaxias I founded the Artaxiad dynasty, reuniting the Armenian Highlands and building a new capital, Artaxata, on the Araxes.
How did the Kingdom of Armenia end?: Caught irreconcilably between Christian Rome and Zoroastrian Persia, Armenia was partitioned in 387 into a small Byzantine west and a Sasanian east (Persarmenia). In 428 the nakharars deposed the last Arsacid king, Artaxias IV, and Persarmenia passed to marzban governors — ending independent Armenian statehood until the Bagratid revival of 885.
How was the Kingdom of Armenia governed?: Armenia was a hereditary monarchy checked by powerful clan chiefs (nakharars), who held hereditary offices and commanded the famed heavy cavalry.

Sources

Every source below was consulted while writing this entry.

Wikipedia en.wikipedia.org/wiki/Kingdom_of_Armenia_(antiquity)
Encyclopaedia Britannica ("Armenia — History") www.britannica.com/place/Armenia/History

This entry was written from the sources above and last updated 10 September 2026.

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

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