Tigranes the Great was King of Armenia under whom the country became, for a short time, the strongest state to Rome's east. He was a member of the Artaxiad Royal House. Under his reign, the Armenian kingdom expanded beyond its traditional boundaries, allowing Tigranes to claim the title Great King, and involving Armenia in many battles against opponents such as the Parthian and Seleucid empires, and the Roman Republic.

During his reign, the kingdom of Armenia was at the zenith of its power and briefly became the most powerful state to the Roman east. Artaxias and his followers had already constructed the base upon which Tigranes built his empire. Despite this fact, the territory of Armenia, being a mountainous one, was governed by nakharars who were largely autonomous from the central authority. Tigranes unified them in order to create internal security in the kingdom. The borders of Armenia stretched from the Caspian Sea to the Mediterranean Sea. At that time, the Armenians had become so expansive, that the Romans and Parthians had to join forces in order to beat them. Tigranes found a more central capital within his domain and named it Tigranocerta.