Mithridates I of Parthia

King of Parthian Empire, 165–132 BC

Mithridates I (also spelled Mithradates I or Mihrdad I; Parthian: 𐭌𐭄𐭓𐭃𐭕 Mihrdāt), also known as Mithridates the Great, was king of the Parthian Empire from 165 BC to 132 BC. During his reign, Parthia was transformed from a small kingdom into a major political power in the Ancient Near East as a result of his conquests. He first conquered Aria, Margiana and western Bactria from the Greco-Bactrians sometime in 163–155 BC, and then waged war with the Seleucid Empire, conquering Media and Atropatene in 148/7 BC. In 141 BC, he conquered Babylonia and held an official investiture ceremony in Seleucia. The kingdoms of Elymais and Characene shortly afterwards became Parthian vassals.

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