Riversdale is a small town in the Southland region of New Zealand.

Riversdale is located between the Hokonui Hills and the Mataura River in the heart of the Waimea Plains, and is roughly equidistant between Gore and Lumsden on State Highway 94, the main road linking Gore with the tourist destination of Milford Sound.

The Riversdale region is one of the few areas in Southland prone to drought during the summer months.

[3] Riversdale-Piano Flat statistical area covers 1,578.74 km2 (609.55 sq mi)[1] and also includes Waikaia.

[5] In 1880, the Waimea Plains Railway was opened; it linked Gore on the Main South Line with Lumsden on the Kingston Branch and passed through Riversdale.

With the improvement of road transportation and changes in government regulations, the railway lost its profitability, and in 1971, most of the line was closed, including the section through Riversdale.