Ionia (satrapy)
Ionian soldier of the Achaemenid army, circa 480 BC. Xerxes I tomb relief.
Western part of the Achaemenid Empire, with Ionia, west of Sardis, circa 500 BC.
Ionia, known in Old Persian as Yauna (𐎹𐎢𐎴), was a region within the satrapy of Lydia, with its capital at Sardis, within the First Persian Empire. The first mention of the Yauna is at the Behistun inscription.