Susa was an ancient city of the Elamite, First Persian Empire, Seleucid, and Parthian empires of Iran, and one of the most important cities of the Ancient Near East. It is located in the lower Zagros Mountains about 250 km east of the Tigris River, between the Karkheh and Dez Rivers.

The modern Iranian town of Shush is located at the site of ancient Susa. Shush is the administrative capital of the Shush County of Iran’s Khuzestan province. It had a population of 64,960 in 2005.

Susa was one of the most important cities of the Ancient Near East. In historic literature, Susa appears in the very earliest Sumerian records: for example, it is described as one of the places obedient to Inanna, the patron deity of Uruk, in Enmerkar and the Lord of Aratta.

Susa is also mentioned in the Ketuvim of the Hebrew Bible by the name Shushan, mainly in Esther, but also once each in Nehemiah and Daniel. Both Daniel and Nehemiah lived in Susa during the Babylonian captivity of the 6th century BCE. Esther became queen there, married to King Ahasuerus, and saved the Jews from genocide. A tomb presumed to be that of Daniel is located in the area, known as Shush-Daniel. The tomb is marked by an unusual white stone cone, which is neither regular nor symmetric. Many scholars believe it was at one point a Star of David. Susa is further mentioned in the Book of Jubilees as one of the places within the inheritance of Shem and his eldest son Elam; and in 8:1, “Susan” is also named as the son (or daughter, in some translations) of Elam.

Greek mythology attributed the founding of Susa to King Memnon of Aethiopia, a character from Homer’s Trojan War epic, the Iliad.