Wilcannia was an electoral district of the Legislative Assembly in the Australian state of New South Wales from 1889 to 1904. The district was named after and included the town of Wilcannia. Prior to 1889 Wilcannia was part of the district of Wentworth. The population in Wentworth had grown significantly since the 1880 redistribution, especially as a result of the growth of mining at Broken Hill. Under the formula for seats, Wentworth was due to return 3 members.