The Achaemenid royal inscriptions are the surviving inscriptions in cuneiform script from the Achaemenid Empire, dating from the 6th to 4th century BCE. These inscriptions are primary sources for the
The Behistun inscription, the longest and perhaps the most famous of the Achaemenid royal inscriptions.
Inscription XPc at Persepolis, on the southern side of the Palace of Darius. It is repeated three times, known as XPca, XPcb and XPcc. XPca and XPcc face each other towards the tops of the antas (large pillars) on the left and right respectively; both have 15 lines in Old Persian, 14 lines in Elamite and 13 lines in Babylonian. XPcb is on the bottom wall alongside the carvings of Achaemenid soldiers, with 25 lines for each language: Old Persian in the middle, Elamite on the right and Babylonian on the left.