Wee Waa (pronounced "Wee War", ) 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.
Wee Waa is 42 kilometres from the Newell Highway, and is referred to as a gateway to the far west centres of Walgett, Collarenebri, Lightning Ridge opal fields and beyond.
The Aboriginal meaning of Wee Waa is "Fire for Roasting" from the language of the Kamilaroi people. The town is known to be the "Cotton Capital of Australia" as a rural community situated in the rich agricultural heartland of the Lower Namoi Valley in NSW. The town services a far greater rural community as well as the villages of Burren Junction, Pilliga and Gwabegar.
The town is situated approximately 190 metres (620 ft) above sea level.