Wau (Arabic: واو Wāw; also known as Wow, Waw, or Wau Town) is a city in northwestern South Sudan, on the western bank of the Jur River, that serves as capital for Western Bahr el Ghazal (and formerly Wau State). It lies approximately 650 kilometres (400 mi) northwest of the capital Juba. A culturally, ethnically and linguistically diverse urban center and trading hub, Wau is also the former headquarters of Western Bahr el Ghazal.