Behbahan (Persian:بهبهان‎‎, also Romanized as Behbahān and Behbehān) is a city in and the capital of Behbahan County, Khuzestan Province, Iran. At the 2012 census its population was 327,410.

To the north of the city lie the ruins of the ancient city Arjan, built during the Sassanian period, where important remnants from the Elamite era can be found.