Nishapur or Nishabur (Persian: نیشاپور, also Romanized as Nīshāpūr, Nīshābūr, and Neyshābūr), is a city in the Razavi Khorasan province in northeastern Iran, situated in a fertile plain at the foot of the Binalud Mountains, near the regional capital of Mashhad. Nishapur derived its name from its alleged founder, the Sasanian king Shapur.