Osroes I

Osroes I 𐭇𐭅𐭎𐭓𐭅
King of Kings
Silver coin of Osroes I, Ecbatana mint
King of the Parthian Empire
1st Reign	109–116
Predecessor	Pacorus II
Successor	Parthamaspates
2nd Reign	117–129
Predecessor	Parthamaspates
Successor	Vologases III
Died	129
Issue	Parthamaspates
House	Arsacid dynasty
Religion	Zoroastrianism

Osroes I (also spelled Chosroes I or Khosrow I; Parthian: 𐭇𐭅𐭎𐭓𐭅 Husrōw) was a Parthian contender, who ruled the western portion of the Parthian Empire from 109 to 129, with a one-year interruption. For most of his reign he contended with the rival king Vologases III (r. 110–147) who was based in the eastern provinces. In 116, Osroes I was briefly ousted from his throne at Ctesiphon during an invasion by Roman emperor Trajan (r. 98–117), who installed Osroes' son, Parthamaspates. After Trajan's death the following year, Osroes I's rule was reinstated by the Parthian nobility. In 129, he was removed from power by Vologases III.