Ilam Province in the context of "Lorestan province"

Elam (/ˈiːləm/) was an ancient civilization centered in the far west and southwest of Iran, stretching from the lowlands of what is now Khuzestan and Ilam Province as well as a small part of modern-day southern Iraq. The modern name Elam stems from the Sumerian transliteration elam(a), along with the later Akkadian elamtu, and the Elamite haltamti. Elamite states were among the leading political forces of the Ancient Near East. In classical literature, Elam was also known as Susiana (US: /ˌsuːʒiˈænə/ UK: /ˌsuːziˈɑːnə/; Ancient Greek: Σουσιανή Sousiānḗ), a name derived from its capital Susa.

Elam was part of the early urbanization of the Near East during the Chalcolithic period (Copper Age). The emergence of written records from around 3000 BC also parallels Sumerian history, where slightly earlier records have been found. In the Old Elamite period (Middle Bronze Age), Elam consisted of kingdoms on the Iranian plateau, centered in Anshan, and from the mid-2nd millennium BC, it was centered in Susa in the Khuzestan lowlands. Its culture played a crucial role during the Persian Achaemenid dynasty that succeeded Elam, when the Elamite language remained among those in official use. Elamite is generally considered a language isolate or unrelated to any other languages. According to Daniel T. Potts, Walther Hinz was less cautious in suggesting that the Elamites were ‘Proto-Lurs’ — that is, ancestors of the inhabitants of modern-day Lurestan in western Iran.

Western Iran consists of Armenian Highlands, northern Zagros, and the rich agricultural area of the Khuzestan Plain in the south.

It includes the provinces of Kordestan, Kermanshah, Ilam, Lorestan, and Hamadan. Some references also count West Azerbaijan Province and Khuzestan Province to this region.