The Koa (Guwa) are Australian Aboriginal people and Native Title Holders of land in the Upper Diamantina River catchment area in the state of Queensland that includes the towns of Winton, Kynuna, Corfield and Middleton.
[1] Tasaku Tsunoda and Gavan Breen have speculated that the ethnonym Koa may derive from a word *guwa meaning 'west'.
[5] At least one Koa Bora ground, a gibber clearing threaded with portolaca, used to exist close to the homestead on Carisbrooke Station, southwest of Winton.
[6] In 1998 grazier Noel Kennedy applied to the Federal Court to have his property Castle Hill declared to be free of native title.
This was challenged by the descendants of the Koa the following year,[7] in a counterclaim for native title to the Castle Hill Pastoral Holding and the Bladensburg National Park in the Shire of Winton.