Orontes I

Orontes I
Bronze coin of Orontes I, minted at Adramyteion between 357–352 BC
Died344 BC
AllegianceAchaemenid Empire
Battles / warsBattle of Cunaxa
Spouse(s)Rhodogune
RelationsArtasyrus (father)
Orontes II (son or grandson)

Orontes I (Old Persian: *Arvanta-; died 344 BC) was a military officer of the Achaemenid Empire and satrap of Armenia at the end of the 5th-century BC and first half of the 4th-century BC. He is notable for having led the unsuccessful Great Satraps' Revolt in Asia Minor against the Achaemenids from 362/1 BC to 360/359 BC.

He was the son of Artasyrus, a high-ranking Bactrian nobleman. Through his maternal line, Orontes traced his descent back to the Persian magnate Hydarnes, one of the six companions of the King of Kings Darius the Great (r. 522–486 BC). Orontes first appears in records in 401 BC as the satrap of Armenia. There he participated in the Battle of Cunaxa, where he pursued the Ten Thousand following their retreat. In the same year, he married Rhodogune, a daughter of Artaxerxes II (r. 404–358 BC).

In the 380s BC, Orontes along with the satrap Tiribazus were assigned to lead the campaign against Evagoras I (r. 411–374 BC), the king of Salamis in Cyprus. The campaign was initially successful, with Evagoras offering to make peace. However, after the negotiations between him and Tiribazus failed, Orontes accused the latter of deliberately prolonging the war and planning to declare independence. This led to Tiribazus' dismissal and imprisonment, triggering a chain of events which ultimately weakened the Persian forces, forcing Orontes to make peace with Evagoras in 380 BC. Artaxerxes II did not deem the conclusion of the war satisfactory, and as a result Orontes fell into disfavour.

Orontes later reappears in 362/1 BC, as the hyparch (governor) of Mysia and the leader of the revolting satraps of Asia Minor. The revolt was shortlived, as Orontes betrayed his allies and shifted his allegiance back to Artaxerxes II. Orontes reportedly thought that he would be greatly rewarded if he did so at such a critical point. Since he was in possession of the troops and money, many other rebellious satraps followed suit. By 360/359 BC, the revolt had ended. Orontes revolted a second time in 354/3 BC, most likely due to his disappointment with the rewards he received by the king. He seized the town of Pergamon, but eventually reconciled with Artaxerxes II's son and successor Artaxerxes III (r. 358–338 BC) and gave him back the town. Orontes later died in 344 BC.

Orontes is regarded as the ancestor of the Orontid dynasty, which established itself in Armenia, Sophene, and Commagene during the Achaemenid and Hellenistic period. Orontes II, who was the satrap of Armenia and led the Armenian contingent (together with Mithrenes) at the Battle of Gaugamela in 331 BC, was either a son or grandson of Orontes.