Wanbi is a township on the Karoonda Highway in the Australian state of South Australia, about 160 kilometres (99 mi) east of the state capital of Adelaide and about 56 kilometres (35 mi) north-east of the municipal seat of Karoonda.

[5][1] Situated on a ridgeline covered by mallee trees, it has a one-street layout common to many South Australian townships.

[10] Like much of the central and northern parts of the Murraylands, the sandy soil, inferior for cropping, was not attractive to would-be farmers.

However, in the mid-1960s, the Moorook citrus-fruit cooperatives ceased sending their product by rail from Yinkanie, removing a large portion of the paying freight handled at the terminus.

In 1996, the mainline through Wanbi, en route to Loxton[note 2] was converted to 1435 mm (4 ft 8+1⁄2 in) standard gauge.