Wee Waa (pronounced "Wee War", /ˈwɪ wɒ/) is a town located on the north-western slopes of the New England region in New South Wales, Australia. The town is within the Narrabri Shire local government area and is on the Namoi River. Wee Waa is 41 kilometres (25 mi) north-west of Narrabri and 571 kilometres (355 mi) northwest of Sydney on the Kamilaroi Highway. At the 2011 census, Wee Waa had a population of 1,653, of which 20.8% were Aboriginal and Torres Strait Islander people.