Tokanui is a community in the eastern portion of Southland District Council, located on the Southern Scenic Route about 56 km (35 mi) east of Invercargill and 107 km (66 mi) southwest of Balclutha, New Zealand. The Tokanui River runs just to the north of the village and occasionally floods the lower parts, as it did when the railway yard flooded in 1935.

Tokanui is a rural locality in the Waipa District and Waikato region of New Zealand's North Island.