Barwon is an electoral district of the Legislative Assembly in the Australian state of New South Wales.

It is represented by Roy Butler, a former member of the Shooters, Fishers and Farmers Party who is now an independent MP.

Covering roughly 44% of the land mass of New South Wales, Barwon is by far the state's largest electoral district.

In 1904, with the downsizing of the Legislative Assembly after Federation, Gwydir was recreated and Moree and Barwon were abolished.

In 1927, with the breakup of the three-member Electoral district of Namoi, it was recreated.